A punching device for prefabricated beams in a beam yard and a method for using the same

Abstract

The present invention relates to the field of prefabricated beam production. The present invention discloses a punching device for prefabricated beams in a beam yard and a method for using the punching device. The problem to be solved by the present invention is that when punching a rectangular steel pipe, there are burrs at the opening of the rectangular steel pipe. When the prefabricated beam is subsequently installed, the burrs at the opening will affect the installation effect of the prefabricated beam, resulting in the subsequent production and installation of the prefabricated beam being affected. The present invention can rotate two grinding sleeves driven by a rotating grinding rod, thereby achieving grinding processing of the opening of the rectangular steel pipe. Through this setting, after the rectangular steel pipe is punched, when two adjacent openings on the rectangular steel pipe move to the top of the grinding piece, the two grinding sleeves on the grinding piece can be inserted from the processing table into the two adjacent openings of the rectangular steel pipe, thereby achieving grinding processing of the opening of the rectangular steel pipe.

Description

Technical Field

[0001] The invention relates to the field of precast beam production, and in particular to a precast beam punching device in a beam yard and a use method thereof. Background Art

[0002] Most of the existing beam prefabrication production lines include: steel cage binding area, pouring area, steaming area, tensioning area, beam storage area and corresponding transfer equipment. The construction process is generally to build the formwork first (including the assembly, cleaning and application of release agent of the formwork), hoist the steel cage frame and use the steel cage frame to complete the steel cage binding, and then transfer the formwork and steel cage to the pouring area, pour concrete in the pouring area and vibrate it to make it dense, then wait for the initial setting of the concrete. The initial setting time is generally about 1 hour. After the initial setting is completed, the side formwork on both sides of the formwork is demoulded, and the side formwork remains in place. The bottom formwork and the bottom formwork trolley transfer the beam body to the steaming area for steaming. After the steaming is completed, it is transferred to the tensioning area for tensioning. After the tensioning is completed, it is transferred to the beam storage area for storage, completing a production cycle. After the side formwork that remains in place is debugged and put into place with the new bottom formwork, the next production cycle begins.

[0003] In the next production process, the prefabricated beams will undergo punching, cutting, laser cutting and other processes on the rectangular steel tubes in sequence to form the prefabricated beams.

[0004] The existing patent (announcement number: CN110449507A) discloses a steel pipe punching machine, which includes a frame, an electric box is arranged on the rear side of the frame, a material rack adjusting mechanism is arranged on the rear side of the top end of the frame top plate, a material rack is connected to the material rack adjusting mechanism, a feeding mechanism is arranged on the lower side of the material rack adjusting mechanism, a small punch is arranged on the front side of the feeding mechanism, a unloading mechanism is arranged on the bottom plate of the small punch, and a mold is arranged on the side of the unloading mechanism close to the feeding mechanism. When the present invention is used, the material rack is manually discharged, the feeding mechanism pushes the steel pipe workpiece to the front of the ejecting rod, the ejecting mechanism pushes the ejecting rod to push the steel pipe workpiece into the mold, and then the feeding mechanism is reset, the small punch starts to press down, the workpiece is punched and formed, and then the ejecting mechanism and the small punch are reset, and the unloading cylinder takes out the workpiece. The present invention realizes the automation of small steel pipe punching and forming of liquid reservoir accessories, improves efficiency, and reduces labor intensity. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: when punching a rectangular steel tube, burrs are present at the opening of the rectangular steel tube, and when the prefabricated beam is subsequently installed, the burrs at the opening will affect the installation effect of the prefabricated beam, thereby affecting the subsequent production and installation of the prefabricated beam. Summary of the invention

[0005] The purpose of the present invention is to provide a precast beam punching device and a method of use in a beam yard to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a precast beam punching device in a beam yard, comprising a horizontally arranged processing table, the top surface of the processing table is provided with a conveying plane for placing rectangular steel pipes, the top of the processing table is also fixedly connected to a fixing frame, a punching device is provided on the fixing frame, the punching device is located above the conveying plane, a placement cavity is also provided on the processing table below the conveying plane, a transmission limit device is connected to the inner wall of the processing table located at the placement cavity, and the transmission limit device cooperates with the punching device in transmission;

[0006] The transmission limit device is also provided with a fixing part and a grinding part. The fixing part and the transmission limit device are slidably matched, the grinding part and the transmission limit device are transmission matched, the fixing part and the grinding part are rotationally matched, and a pushing feeding device is also slidably provided on the fixed frame;

[0007] The pushing and loading device is in transmission cooperation with the punching device, and the pushing and loading device is located above the conveying plane.

[0008] Preferably, the punching device includes a driving motor fixedly connected to the top of the processing table, the main shaft of the driving motor is connected to the driving disk, a rotating rod is provided on the fixed frame, both ends of the rotating rod are rotatably matched with the fixed frame, one end of the rotating rod facing the driving disk is fixedly connected with the rotating disk, a driving belt is sleeved between the driving disk and the rotating disk, a punching rotating shaft is eccentrically arranged on the rotating rod, a fixing plate is fixedly connected between the inner walls of the fixed frame which are arranged opposite to each other, a punching frame is slidably arranged on the fixed plate, the top of the punching frame is hingedly matched with the outer wall of the punching rotating shaft, a punching body is provided at the bottom of the punching frame, and the punching body is located above the conveying plane.

[0009] Preferably, the transmission limiting device includes a rotating gear fixedly connected to the rotating rod away from the rotating disk, a transmission rod is also rotatably provided on the outer wall of the fixed frame, the transmission rod is fixedly connected to a transmission gear meshing with the rotating gear, the transmission rod is also fixedly connected to the transmission disk, a rotating rod is rotatably provided on the inner wall of the placement cavity on the processing table, the rotating rod is fixedly connected to the rotating disk, a transmission belt is sleeved between the transmission disk and the rotating disk, the end of the rotating rod is fixedly connected to the first bevel gear, the inner wall of the placement cavity in the processing table is fixedly connected to the support seat, the support seat is rotatably provided with a driving rotating rod, one end of the driving rotating rod facing the first bevel gear is fixedly connected to the second bevel gear, the first bevel gear and the second bevel gear are meshed, and the end of the driving rotating rod away from the second bevel gear is fixedly connected to the driving helical gear.

[0010] Preferably, the transmission limit device also includes a cam rotatably arranged on the driving rotating rod, two cross-arranged limit grooves are opened on the outer wall of the cam, an adjustment plate is slidably arranged on the support seat, an adjusting rod is clamped on the adjusting plate, the bottom of the adjusting rod is conically arranged, and the bottom of the adjusting rod is in the limit groove of the cam, a pressure spring is sleeved on the adjusting rod, and the two ends of the pressure spring are respectively connected to the bottom of the adjusting plate and the adjusting rod, and a moving rod and a lifting rod are also arranged on the support seat above the adjusting plate, and the moving rod and the lifting rod are respectively located above the two limit grooves, and the moving rod and the lifting rod are both sleeved with connecting springs, and the two ends of the connecting spring are respectively connected to the inner top of the support seat and the moving rod.

[0011] Preferably, the grinding part includes two rotating grinding rods rotatably connected to the support seat, and the two rotating grinding rods are fixedly connected with rotating bevel gears, the two rotating bevel gears are respectively located on both sides of the driving bevel gear, and the driving bevel gear is in transmission cooperation with the two rotating bevel gears, and the two rotating grinding rods are both clamped with grinding sleeves, and an annular groove is provided on the outer wall of the grinding sleeve, and a lifting frame is slidably provided on the support seat, and the lifting frame is fixedly connected to the top of the lifting rod, and a clamping frame is hingedly provided on the lifting frame toward the direction of the two grinding sleeves, and the clamping frame is rotatably cooperated with the annular groove in the corresponding grinding sleeve, and a through opening is provided at the top of the processing table and the corresponding parts of the two grinding sleeves.

[0012] Preferably, the fixing member includes a movable card plate slidably arranged on the inner wall of the support seat, a movable vertical groove corresponding to the movable rod and the lifting rod is provided on the outer wall of the support seat, a wedge-shaped groove is provided at the position corresponding to the movable rod and the lifting rod on the movable card plate, a locking mouth is provided in the wedge-shaped groove corresponding to the lifting rod, a positioning rod is extended in the direction of the movable vertical groove on the movable rod and the lifting rod, and the positioning rod is slidably matched with the wedge-shaped groove, a sliding groove is also provided on the movable card plate, and a sliding block slidably matched with the sliding groove is fixedly connected to the inner wall of the support seat, and a tension spring is connected between the sliding block and the movable card plate.

[0013] Preferably, the feeding device includes a sliding plate slidably arranged on the outer wall of the fixed frame, a connecting rod is hingedly arranged on the end surface of the rotating disk, and the end of the connecting rod away from the rotating disk is hingedly matched with the sliding plate, and a pushing frame is slidably arranged on the sliding plate, and a limiting rod is fixedly connected to the pushing frame, and a positioning plate is relatively fixedly connected to the outer wall of the fixed frame, a positioning groove is provided on the positioning plate, and the lower end of the positioning groove is inclined with an inclined surface, and limiting wheels are provided at both ends of the limiting rod, and the limiting wheels are located in the positioning groove, and a pushing plate is also slidably arranged on both sides of the conveying plane at the top of the processing table, and a vertical groove is provided on the pushing plate, and the pushing frame slidably cooperates with the vertical groove, and a clamping electric cylinder is also provided on the pushing plate.

[0014] Preferably, the method for using the precast beam punching equipment in a beam yard comprises the following steps:

[0015] S1: Place a rectangular steel pipe above the conveying plane. When punching holes on the surface of the rectangular steel pipe, the driving motor drives the driving disc to rotate. The driving disc drives the rotating disc to rotate through the driving belt, thereby rotating the rotating rod on the rotating disc. When the rotating rod rotates, the punching rotating shaft is eccentrically arranged on the rotating shaft, so that the punching rotating shaft can drive the punching frame hinged at the bottom to move up and down reciprocatingly above the conveying plane, thereby causing the punching body at the bottom of the punching frame to punch holes on the rectangular steel pipe.

[0016] S2: After the rectangular steel pipe is punched by the punching device, the rectangular steel pipe moves toward the grinding part under the drive of the feeding device. At this time, the opening on the rectangular steel pipe is above the two grinding sleeves. At this time, when the rotating rod rotates again to make the punching body face the surface of the rectangular steel pipe for punching, the rotation of the rotating rod will drive the rotating gear to rotate, and the rotation of the rotating gear will drive the transmission gear on the transmission rod to rotate, and the rotation of the transmission gear will drive the transmission disk to rotate, and then the rotating disk can be rotated under the drive of the transmission belt, and the rotation of the rotating disk will drive the rotating rod to rotate the first bevel gear, and the rotation of the first bevel gear drives the second bevel gear to rotate, which will cause the driving rotating rod to rotate on the support seat, and the grinding part can be driven by the driving rotating rod to perform grinding on the opening of the rectangular steel pipe;

[0017] S3; when the driving rotating rod rotates, the driving rotating rod drives the cam to rotate to the raised end of the cam, and the raised end of the cam drives the adjusting rod to lift upward, and when the cam rotates, it can drive the adjusting rod to move along the limiting groove driven by the limiting groove, so that the adjusting rod can drive the adjusting plate to slide on the supporting seat. At this time, the adjusting rod is under the lifting rod, and the lifting rod is lifted upward under the drive of the raised end of the cam. When the lifting rod is lifted upward, it will drive the lifting frame to move upward. After the lifting frame moves upward, the clamping frames arranged on both sides of the lifting frame will synchronously drive the two grinding sleeves. When the two grinding sleeves move upward, the two grinding sleeves will move from the through-hole on the top of the processing table to the opening of the rectangular steel pipe, so that the two grinding sleeves can contact the inner wall of the opening of the rectangular steel pipe, and the driving rotating rod can drive the driving bevel gear to rotate while the driving bevel gear rotates, and the driving bevel gear rotates synchronously to drive the two rotating bevel gears to rotate, and the two rotating bevel gears will drive the two rotating grinding rods to rotate at the same time, and the two grinding sleeves are clamped on the rotating grinding rods, and the two grinding sleeves can be rotated under the drive of the rotating grinding rod, thereby realizing the grinding processing of the opening of the rectangular steel pipe;

[0018] S4: When the adjusting rod contacts the bottom of the lifting rod under the drive of the cam, the adjusting rod will drive the lifting rod to move upward. At this time, the positioning rod on the lifting rod will pass through the moving vertical groove on the support seat, and the positioning rod will contact the wedge-shaped groove on the moving clamping plate when moving, so that the positioning rod can drive the moving clamping plate to move toward the grinding workpiece when moving upward. When the positioning rod on the lifting rod moves to the locking mouth in the wedge-shaped groove, the locking mouth will lock the positioning rod under the drive of the tension spring between the moving clamping plate and the support seat, so that the lifting rod is positioned. At this time, the lifting rod is in a state of lifting the lifting frame upward. At this time, when the two grinding sleeves are at the opening in the rectangular steel pipe, the opening of the rectangular steel pipe can be stably ground.

[0019] S5: After the punching device punches the rectangular steel pipe, the rotating rod drives the punching frame to move up, and the driving rotating rod drives the cam to rotate. The limit groove on the cam will make the adjusting rod move to the bottom of the moving rod, and the raised end of the cam will contact the bottom of the adjusting rod. At this time, the adjusting rod will be lifted in the direction of the moving rod. When the moving rod is lifted, the positioning rod on the moving rod will contact the wedge-shaped groove on the moving card plate when passing through the moving vertical groove. At this time, the wedge-shaped groove makes the moving card plate slide on the support seat again, and the positioning rod on the lifting rod will be separated from the locking mouth of the corresponding wedge-shaped groove. At this time, the locking mouth no longer locks the positioning rod, and the lifting rod will be quickly reset under the drive of the connecting spring, thereby causing the lifting frame to move down and reset. The lifting frame moves down so that the two grinding sleeves move on the rotating grinding rod and disengage from the opening in the rectangular steel pipe. Through this setting, when the rectangular steel pipe performs the next punching operation, the rectangular steel pipe can be driven by the feeding device to push the rectangular steel pipe to move on the conveying plane without being hindered by the grinding piece.

[0020] S6: After the punching device punches holes in the rectangular steel pipe, when the rotating rod rotates to move the punching frame upward, the rotating rod drives the rotating disk to rotate, and the rotating disk will pull the connecting rod to move the sliding plate toward the processing table. The sliding plate moves downward and drives the push frame to move downward. When the limiting wheel on the limiting rod contacts the inclined surface of the positioning groove, the limiting rod drives the push frame to slide horizontally on the sliding plate, and the push frame slides with the push plate through the vertical groove. At this time, the push plate drives the clamping electric cylinder to move, and the rectangular steel pipe clamped by the clamping electric cylinder will move on the conveying platform, and then the moving distance of the rectangular steel pipe is adjusted at equal intervals, so that the rectangular steel pipe can be punched continuously at equal intervals.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, the rotating disk can be rotated under the drive of the transmission belt, and the rotation of the rotating disk will drive the rotating rod to rotate the first bevel gear. The rotation of the first bevel gear drives the second bevel gear to rotate, which will cause the driving rotating rod to rotate on the support seat. Driven by the driving rotating rod, the grinding part can be driven to grind the opening of the rectangular steel pipe, so that the opening of the rectangular steel pipe is smooth to avoid affecting the installation of the beam ring during subsequent beam ring processing and production.

[0023] In the present invention, the driving bevel gear rotates synchronously to drive the two rotating bevel gears to rotate, and the two rotating bevel gears will simultaneously drive the two rotating grinding rods to rotate. The two grinding sleeves are clamped on the rotating grinding rods. Driven by the rotating grinding rods, the two grinding sleeves can rotate, thereby realizing the grinding processing of the rectangular steel pipe openings. Through this arrangement, after the rectangular steel pipe is punched, when the two adjacent openings on the rectangular steel pipe are moved to the top of the grinding piece, the two grinding sleeves on the grinding piece can be inserted from the processing table into the two adjacent openings of the rectangular steel pipe, thereby realizing the grinding processing of the rectangular steel pipe openings.

[0024] In the present invention, when the positioning rod on the lifting rod moves to the locking mouth in the wedge-shaped groove, the locking mouth will lock the positioning rod under the drive of the tension spring between the movable clamping plate and the support seat, thereby positioning the lifting rod. At this time, the lifting rod is in a state of lifting the lifting frame upward. At this time, when the two grinding sleeves are at the openings in the rectangular steel pipe, the openings of the rectangular steel pipe can be stably polished. There are two grinding sleeves, which correspond to the two openings of the rectangular steel pipe. When the punching device performs punching processing on the rectangular steel pipe, the two holes of the two grinding sleeves are positioned to limit the rectangular steel pipe on the processing table, thereby further avoiding the displacement of the rectangular steel pipe during the punching operation, which affects the processing quality of the rectangular steel pipe.

[0025] In the present invention, the lifting frame moves downward to enable the two grinding sleeves to move on the rotating grinding rod and disengage from the opening in the rectangular steel pipe. Through this arrangement, when the rectangular steel pipe undergoes the next punching operation, the rectangular steel pipe can be pushed by the propulsion feeding device to move on the conveying plane without being hindered by the grinding piece. When the opening on the rectangular steel pipe moves to above the grinding piece, the grinding piece can still be controlled to move upward, and the opening of the rectangular steel pipe can continue to be polished while the rectangular steel pipe is limited at the same time. Compared with the prior art, when the rectangular steel pipe is punched, the rectangular steel pipe can be effectively limited while the opening of the rectangular steel pipe is polished, thereby improving the processing efficiency of the rectangular steel pipe.

[0026] In the present invention, the pushing plate drives the clamping electric cylinder to move, and the rectangular steel pipe clamped by the clamping electric cylinder will move on the conveying platform, and then the moving distance of the rectangular steel pipe is adjusted at equal intervals, so that the rectangular steel pipe can be punched continuously at equal intervals. The pushing frame can drive the pushing plate to move only after it moves to the inclined surface, and the spacing between the vertical groove and the inclined surface enables the grinding piece to effectively grind the opening of the rectangular steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the punching device of the present invention;

[0030] Figure 4 It is a schematic cross-sectional view of a partial three-dimensional structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the transmission limit device and the grinding piece of the present invention;

[0032] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the transmission limit device of the present invention;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the grinding piece of the present invention;

[0034] Figure 8 The three-dimensional structure diagram of the transmission limit device and the fixing member of the present invention is shown in FIG. Figure 1 ;

[0035] Fig. 9 The three-dimensional structure diagram of the transmission limit device and the fixing member of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.10 This is a disassembled view of the three-dimensional structure of the fixing member of the present invention;

[0037] Fig.11 It is a schematic diagram of the three-dimensional structure of the propulsion and loading device of the present invention;

[0038] Fig.12 It is a schematic diagram of the partial three-dimensional structure of the propulsion feeding device of the present invention.

[0039] In the figure: 1, processing table; 11, conveying plane; 12, fixed frame; 13, placement cavity; 2, punching device; 21, driving motor; 22, driving disk; 23, rotating rod; 24, rotating disk; 25, driving belt; 26, punching rotating shaft; 27, fixed plate; 28, punching frame; 29, punching body; 3, transmission limit device; 31, rotating gear; 32, transmission rod; 33, transmission gear; 34, transmission disk; 35, rotating rod; 36, rotating disk; 37, transmission belt; 38, first bevel gear; 39, support seat; 310, driving rotating rod; 311, second bevel gear; 312, driving helical gear; 313, cam; 314, limit groove; 315, Adjusting plate; 316, adjusting rod; 317, pressure spring; 318, moving rod; 319, lifting rod; 320, connecting spring; 4, grinding piece; 41, rotating grinding rod; 42, rotating bevel gear; 43, grinding sleeve; 44, lifting frame; 45, clamping frame; 5, fixing piece; 51, moving clamping plate; 52, moving vertical slot; 53, wedge-shaped slot; 54, locking mouth; 55, positioning rod; 56, slide slot; 57, slider; 58, tension spring; 6, pushing feeding device; 61, sliding plate; 62, connecting rod; 63, pushing frame; 64, limiting rod; 65, positioning plate; 66, positioning slot; 67, limiting wheel; 68, pushing plate; 69, vertical slot; 610, clamping electric cylinder. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 12 The present invention provides a technical solution: a prefabricated beam punching device in a beam yard, comprising a processing table 1 arranged horizontally, a conveying plane 11 for placing rectangular steel pipes is arranged on the top surface of the processing table 1, a fixing frame 12 is fixedly connected to the top of the processing table 1, a punching device 2 is arranged on the fixing frame 12, the punching device 2 is located above the conveying plane 11, a placement cavity 13 is opened on the processing table 1 below the conveying plane 11, a transmission limit device 3 is connected to the inner wall of the processing table 1 located at the placement cavity 13, and the transmission limit device 3 is matched with the punching device 2 in transmission;

[0042] The transmission limit device 3 is also provided with a fixing part 5 and a grinding part 4. The fixing part 5 is slidably matched with the transmission limit device 3, the grinding part 4 is transmission matched with the transmission limit device 3, the fixing part 5 is rotationally matched with the grinding part 4, and a pushing feeding device 6 is also slidably provided on the fixing frame 12;

[0043] The pushing and loading device 6 is in transmission cooperation with the punching device 2 , and the pushing and loading device 6 is located above the conveying plane 11 .

[0044] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the punching device 2 includes a driving motor 21 fixedly connected to the top of the processing table 1, the main shaft of the driving motor 21 is connected to the driving disk 22, a rotating rod 23 is arranged on the fixed frame 12, both ends of the rotating rod 23 are rotatably matched with the fixed frame 12, one end of the rotating rod 23 facing the driving disk 22 is fixedly connected to the rotating disk 24, a driving belt 25 is sleeved between the driving disk 22 and the rotating disk 24, a punching rotating shaft 26 is eccentrically arranged on the rotating rod 23, a fixing plate 27 is fixedly connected between the inner walls of the fixed frame 12 which are arranged oppositely, a punching frame 28 is slidably arranged on the fixing plate 27, the top of the punching frame 28 is hingedly matched with the outer wall of the punching rotating shaft 26, a punching body 29 is arranged at the bottom of the punching frame 28, and the punching body 29 is located above the conveying plane 11;

[0045] A rectangular steel pipe is placed above the conveying plane 11. When punching is performed on the surface of the rectangular steel pipe, the driving motor 21 drives the driving disk 22 to rotate. The driving disk 22 rotates and drives the rotating disk 24 to rotate through the driving belt 25, thereby rotating the rotating rod 23 disposed on the rotating disk 24. When the rotating rod 23 rotates, since the punching rotating shaft 26 is eccentrically disposed on the rotating shaft 23, the punching rotating shaft 26 can drive the punching frame 28 hinged at the bottom to move back and forth up and down above the conveying plane 11, thereby causing the punching body 29 at the bottom of the punching frame 28 to punch the rectangular steel pipe, thereby realizing the punching processing of the rectangular steel pipe.

[0046] In this embodiment, Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the transmission limiting device 3 includes a rotating gear 31 fixedly connected to the end of the rotating rod 23 away from the rotating disk 24, a transmission rod 32 is also rotatably provided on the outer wall of the fixed frame 12, and a transmission gear 33 meshing with the rotating gear 31 is fixedly connected to the transmission rod 32, and a transmission disk 34 is also fixedly connected to the transmission rod 32. A rotating rod 35 is rotatably provided on the inner wall of the placement cavity 13 on the processing table 1, and a rotating disk 36 is fixedly connected to the rotating rod 35. A transmission belt 37 is sleeved between the transmission disk 34 and the rotating disk 36, and a first bevel gear 38 is fixedly connected to the end of the rotating rod 35. A support seat 39 is fixedly connected to the inner wall of the placement cavity 13 in the processing table 1, and a driving rotating rod 310 is rotatably provided on the support seat 39, and a second bevel gear 311 is fixedly connected to the end of the driving rotating rod 310 facing the first bevel gear 38, and the first bevel gear 38 and the second bevel gear 311 are meshed, and a driving helical gear 312 is fixedly connected to the end of the driving rotating rod 310 away from the second bevel gear 311;

[0047] When the rectangular steel pipe is punched by the punching device 2, the rectangular steel pipe moves toward the grinding piece 4 under the drive of the feeding device 6. At this time, the opening on the rectangular steel pipe is above the two grinding sleeves 43. At this time, when the rotating rod 23 rotates again to make the punching body 29 toward the surface of the rectangular steel pipe for punching, the rotation of the rotating rod 23 will drive the rotating gear 31 to rotate, and the rotation of the rotating gear 31 will drive the transmission gear 33 on the transmission rod 32 to rotate. The rotation of the transmission gear 33 will drive the transmission disk 34 to rotate, and then the rotating disk 36 can be rotated under the drive of the transmission belt 37. The rotation of the rotating disk 36 will drive the rotating rod 35 to rotate the first bevel gear 38. The rotation of the first bevel gear 38 drives the second bevel gear 311 to rotate, which will cause the driving rotating rod 310 to rotate on the support seat 39. Driven by the driving rotating rod 310, the grinding piece 4 can be driven to grind the opening of the rectangular steel pipe, so that the opening of the rectangular steel pipe is smooth to avoid affecting the installation of the beam ring during subsequent beam ring processing and production.

[0048] In this embodiment, Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the transmission limiting device 3 also includes a cam 313 rotatably arranged on the driving rotating rod 310, and two cross-arranged limiting grooves 314 are opened on the outer wall of the cam 313. An adjusting plate 315 is slidably arranged on the support seat 39, and an adjusting rod 316 is clamped on the adjusting plate 315. The bottom of the adjusting rod 316 is conical, and the bottom of the adjusting rod 316 is located in the limiting groove 314 of the cam 313. A pressure spring 317 is sleeved on the adjusting rod 316, and the two ends of the pressure spring 317 are respectively connected to the bottom of the adjusting plate 315 and the adjusting rod 316. A moving rod 318 and a lifting rod 319 are also arranged on the support seat 39 above the adjusting plate 315. The moving rod 318 and the lifting rod 319 are respectively located above the two limiting grooves 314. The moving rod 318 and the lifting rod 319 are both sleeved with a connecting spring 320, and the two ends of the connecting spring 320 are respectively connected to the inner top of the support seat 39 and the moving rod 318.

[0049] The grinding member 4 includes two rotating grinding rods 41 rotatably connected to the support seat 39, and the two rotating grinding rods 41 are fixedly connected with rotating bevel gears 42, and the two rotating bevel gears 42 are respectively located on both sides of the driving bevel gear 312, and the driving bevel gear 312 is in transmission cooperation with the two rotating bevel gears 42, and the two rotating grinding rods 41 are both clamped with grinding sleeves 43, and an annular groove is provided on the outer wall of the grinding sleeve 43, and a lifting frame 44 is slidably provided on the support seat 39, and the lifting frame 44 is fixedly connected to the top of the lifting rod 319, and a clamping frame 45 is hingedly provided on the lifting frame 44 toward the direction of the two grinding sleeves 43, and the clamping frame 45 is rotatably cooperated with the annular groove in the corresponding grinding sleeve 43, and a through opening is provided at the top of the processing table 1 and the corresponding part of the two grinding sleeves 43;

[0050] When the driving rotating rod 310 rotates, the driving rotating rod 310 drives the cam 313 to rotate to the raised end of the cam 313, and the raised end of the cam 313 drives the adjusting rod 316 to lift upward, and when the cam 313 rotates, it can drive the adjusting rod 316 to move along the limiting groove 314, so that the adjusting rod 316 can drive the adjusting plate 315 to slide on the supporting seat 39. At this time, the adjusting rod 316 is under the lifting rod 319, and the lifting rod 319 is lifted upward under the drive of the raised end of the cam 313. When the lifting rod 319 is lifted upward, it will drive the lifting frame 44 to move upward. After the lifting frame 44 moves upward, the clamping frame 45 set on both sides of the lifting frame 44 will synchronously drive the two grinding sleeves 43 to move upward. At this time, the two grinding sleeves 43 will move from the through-hole at the top of the processing table 1 to the rectangular shaped steel pipe, so that the two grinding sleeves 43 can contact the inner wall of the opening of the rectangular steel pipe, and the driving rod 310 can drive the driving bevel gear 312 to rotate while rotating, and the driving bevel gear 312 rotates synchronously to drive the two rotating bevel gears 42 to rotate, and the two rotating bevel gears 42 will simultaneously drive the two rotating grinding rods 41 to rotate, and the two grinding sleeves 43 are clamped on the rotating grinding rod 41, and the two grinding sleeves 43 can be rotated under the drive of the rotating grinding rod 41, thereby realizing the grinding processing of the rectangular steel pipe opening, through this arrangement, after the rectangular steel pipe is punched, when the two adjacent openings on the rectangular steel pipe are moved to the top of the grinding piece 4, the two grinding sleeves 43 on the grinding piece 4 can be inserted from the processing table 1 into the two adjacent openings of the rectangular steel pipe, thereby realizing the grinding processing of the rectangular steel pipe opening.

[0051] In this embodiment, Figure 2 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10 As shown, the fixing member 5 includes a moving card plate 51 slidably arranged on the inner wall of the support seat 39, a moving vertical groove 52 corresponding to the moving rod 318 and the lifting rod 319 is provided on the outer wall of the support seat 39, a wedge-shaped groove 53 is provided at the position corresponding to the moving rod 318 and the lifting rod 319 on the moving card plate 51, a locking hole 54 is provided in the wedge-shaped groove 53 corresponding to the lifting rod 319, a positioning rod 55 is extended toward the moving vertical groove 52 on the moving rod 318 and the lifting rod 319, and the positioning rod 55 is slidably matched with the wedge-shaped groove 53, a sliding groove 56 is also provided on the moving card plate 51, a sliding block 57 slidably matched with the sliding groove 56 is fixedly connected to the inner wall of the support seat 39, and a tension spring 58 is connected between the sliding block 57 and the moving card plate 51;

[0052] When the adjusting rod 316 contacts the bottom of the lifting rod 319 driven by the cam 313, the adjusting rod 316 will drive the lifting rod 319 to move upward. At this time, the positioning rod 55 on the lifting rod 319 will pass through the movable vertical slot 52 on the support seat 39, and the positioning rod 55 will contact the wedge-shaped slot 53 on the movable clamping plate 51 when moving, so that the positioning rod 55 can drive the movable clamping plate 51 to move toward the direction of the grinding piece 4 when moving upward. When the positioning rod 55 on the lifting rod 319 moves to the locking mouth 54 in the wedge-shaped slot 53, the locking mouth 54 will be moved to the fixed position under the drive of the tension spring 58 between the movable clamping plate 51 and the support seat 39. The positioning rod 55 is locked, thereby positioning the lifting rod 319. The lifting rod 319 is now in a state of lifting the lifting frame 44 upward. At this time, when the two grinding sleeves 43 are at the openings in the rectangular steel pipe, the openings of the rectangular steel pipe can be stably polished. Two grinding sleeves 43 are provided, and the two grinding sleeves 43 correspond to the two openings of the rectangular steel pipe. When the punching device 2 performs punching processing on the rectangular steel pipe, the two holes of the two grinding sleeves 43 are positioned to limit the rectangular steel pipe on the processing table 1, further avoiding the rectangular steel pipe from being offset during the punching operation, thereby affecting the processing quality of the rectangular steel pipe.

[0053] When the punching device 2 punches the rectangular steel pipe, the rotating rod 23 drives the punching frame to move up, and the driving rotating rod 310 drives the cam 313 to rotate. The limit groove 314 on the cam 313 will make the adjustment rod 316 move to the bottom of the moving rod 318, and the raised end of the cam 313 will contact the bottom of the adjustment rod 316. At this time, the adjustment rod 316 will be lifted in the direction of the moving rod 318. When the moving rod 318 is lifted, the positioning rod 55 on the moving rod 318 will contact the wedge-shaped groove 53 on the moving card plate 51 when passing through the moving vertical groove 52. At this time, the wedge-shaped groove 53 makes the moving card plate 51 slide on the support seat 39 again, and the positioning rod 55 on the lifting rod 319 will be separated from the locking mouth 54 of the corresponding wedge-shaped groove 53. At this time, the locking mouth 54 no longer locks the positioning rod 55, and the lifting rod 319 will be quickly reset under the drive of the connecting spring 320, and then the lifting frame 44 will move down and reset. The lifting frame 44 moves down to make the two grinding sleeves 43 move on the rotating grinding rod 41 and disengage from the opening in the rectangular steel pipe. Through this arrangement, when the rectangular steel pipe is subjected to the next punching operation, the rectangular steel pipe can be pushed to move on the conveying plane 11 under the drive of the propulsion feeding device 6 without being hindered by the grinding piece 4. When the opening on the rectangular steel pipe moves to the top of the grinding piece 4, the grinding piece 4 can still be controlled to move up, continue to grind the opening of the rectangular steel pipe and limit the rectangular steel pipe at the same time. Compared with the prior art, when the rectangular steel pipe is punched, the rectangular steel pipe can be effectively limited while grinding the opening of the rectangular steel pipe, thereby improving the processing efficiency of the rectangular steel pipe.

[0054] In this embodiment, Figure 1 , Fig.11 and Fig.12 As shown, the feeding device 6 comprises a sliding plate 61 slidably arranged on the outer wall of the fixed frame 12, a connecting rod 62 is hingedly arranged on the end surface of the rotating disk 24, and the end of the connecting rod 62 away from the rotating disk 24 is hingedly matched with the sliding plate 61, a push frame 63 is slidably arranged on the sliding plate 61, and a limiting rod 64 is fixedly connected to the push frame 63, and a positioning plate 65 is relatively fixedly connected to the outer wall of the fixed frame 12, and a positioning groove 66 is provided on the positioning plate 65, and the lower end of the positioning groove 66 is inclinedly provided with an inclined surface, and both ends of the limiting rod 64 are provided with limiting wheels 67, and the limiting wheels 67 are located in the positioning groove 66. The top of the processing table 1 is located on both sides of the conveying plane 11 and is also slidably provided with a pushing plate 68, and a vertical groove 69 is provided on the pushing plate 68, and the pushing frame 63 is slidably matched with the vertical groove 69, and a clamping electric cylinder 610 is also provided on the pushing plate 68;

[0055] After the punching device 2 punches the rectangular steel pipe, the rotating rod 23 rotates to move the punching frame 28 upward, and the rotating rod 23 drives the rotating disk 24 to rotate. The rotating disk 24 will then pull the connecting rod 62 to move the sliding plate 61 toward the direction of the processing table 1. The downward movement of the sliding plate 61 will drive the push frame 63 to move downward. When the limiting wheel 67 on the limiting rod 64 contacts the inclined surface of the positioning groove 66, the limiting rod 64 will drive the push frame 63 to slide horizontally on the sliding plate 61, and the push frame 63 passes through the The vertical groove 69 is slidably matched with the push plate 68. At this time, the push plate 68 will drive the clamping electric cylinder 610 to move, and the rectangular steel pipe clamped by the clamping electric cylinder 610 will move on the conveying platform, and then the moving distance of the rectangular steel pipe is adjusted at equal intervals, so that the rectangular steel pipe can be punched continuously at equal intervals. The push frame 63 can drive the push plate 68 to move only after it moves to the inclined surface, and the distance between the vertical groove 69 and the inclined surface enables the grinding piece 4 to effectively grind the opening of the rectangular steel pipe.

[0056] The use method and advantages of the present invention: The use method of the prefabricated beam punching device in the beam yard has the following working process:

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown:

[0058] S1: Place the rectangular steel pipe above the conveying plane 11. When punching the surface of the rectangular steel pipe, the driving motor 21 drives the driving disc 22 to rotate. The driving disc 22 rotates and drives the rotating disc 24 to rotate through the driving belt 25, thereby rotating the rotating rod 23 disposed on the rotating disc 24. When the rotating rod 23 rotates, the punching rotating shaft 26 is eccentrically disposed on the rotating shaft 23, so that the punching rotating shaft 26 can drive the punching frame 28 hinged at the bottom to move back and forth above the conveying plane 11, thereby causing the punching body 29 at the bottom of the punching frame 28 to perform punching operations on the rectangular steel pipe.

[0059] S2: After the rectangular steel pipe is punched by the punching device 2, the rectangular steel pipe moves toward the grinding piece 4 under the drive of the feeding device 6. At this time, the opening on the rectangular steel pipe is above the two grinding sleeves 43. At this time, when the rotating rod 23 rotates again to make the punching body 29 punch the surface of the rectangular steel pipe, the rotation of the rotating rod 23 will drive the rotating gear 31 to rotate, and the rotation of the rotating gear 31 drives the transmission gear 33 on the transmission rod 32 to rotate. The rotation of the transmission gear 33 drives the transmission disc 34 to rotate, and then the rotating disc 36 can be rotated under the drive of the transmission belt 37. The rotation of the rotating disc 36 drives the rotating rod 35 to rotate the first bevel gear 38. The rotation of the first bevel gear 38 drives the second bevel gear 311 to rotate, which makes the driving rotating rod 310 rotate on the support seat 39. Driven by the driving rotating rod 310, the grinding piece 4 can be driven to grind the opening of the rectangular steel pipe;

[0060] When the driving rotating rod 310 rotates, the driving rotating rod 310 drives the cam 313 to rotate to the raised end of the cam 313, and the raised end of the cam 313 drives the adjusting rod 316 to lift upward, and when the cam 313 rotates, it can drive the adjusting rod 316 to move along the limiting groove 314 driven by the limiting groove 314, so that the adjusting rod 316 can drive the adjusting plate 315 to slide on the supporting seat 39, and at this time, the adjusting rod 316 is under the lifting rod 319, and the lifting rod 319 is lifted upward under the drive of the raised end of the cam 313, and when the lifting rod 319 is lifted upward, it will drive the lifting frame 44 to move upward, and after the lifting frame 44 moves upward, the clamping joints set on both sides of the lifting frame 44 are used. The frame 45 will synchronously drive the two grinding sleeves 43 to move upward, and at this time, the two grinding sleeves 43 will move from the through hole on the top of the processing table 1 to the opening of the rectangular steel pipe, so that the two grinding sleeves 43 can contact the inner wall of the opening of the rectangular steel pipe, and the driving rod 310 can drive the driving bevel gear 312 to rotate while rotating, and the driving bevel gear 312 rotates synchronously to drive the two rotating bevel gears 42 to rotate, and the two rotating bevel gears 42 will simultaneously drive the two rotating grinding rods 41 to rotate, and the two grinding sleeves 43 are clamped and arranged on the rotating grinding rod 41, and the two grinding sleeves 43 can be rotated under the drive of the rotating grinding rod 41, thereby realizing the grinding processing of the rectangular steel pipe opening;

[0061] When the adjusting rod 316 contacts the bottom of the lifting rod 319 driven by the cam 313, the adjusting rod 316 will drive the lifting rod 319 to move upward. At this time, the positioning rod 55 on the lifting rod 319 will pass through the movable vertical slot 52 on the support seat 39, and the positioning rod 55 will contact the wedge-shaped slot 53 on the movable clamping plate 51 when moving, so that the positioning rod 55 can drive the movable clamping plate 51 to move toward the grinding piece 4 when moving upward. When the positioning rod 55 on the lifting rod 319 moves to the locking mouth 54 in the wedge-shaped slot 53, the locking mouth 54 will lock the positioning rod 55 under the drive of the tension spring 58 between the movable clamping plate 51 and the support seat 39, thereby positioning the lifting rod 319. At this time, the lifting rod 319 is in a state of lifting and moving the lifting frame 44 upward. At this time, when the two grinding sleeves 43 are at the opening in the rectangular steel pipe, the opening of the rectangular steel pipe can be stably ground.

[0062] S5: After the punching device 2 punches the rectangular steel pipe, the rotating rod 23 drives the punching frame to move upward, driving the rotating rod 310 to drive the cam 313 to rotate, and the limiting groove 314 on the cam 313 will move the adjusting rod 316 to the bottom of the moving rod 318, and the raised end of the cam 313 will contact the bottom of the adjusting rod 316. At this time, the adjusting rod 316 will be lifted in the direction of the moving rod 318. When the moving rod 318 is lifted, the positioning rod 55 on the moving rod 318 will pass through the moving vertical groove 52 and contact the wedge groove 53 on the moving card plate 51. At this time, the wedge groove 53 will again make the moving card plate 51 on the support seat 39, and the positioning rod 55 on the lifting rod 319 will be separated from the locking port 54 of the corresponding wedge-shaped groove 53, at which time the locking port 54 will no longer lock the positioning rod 55, and the lifting rod 319 will be quickly reset under the drive of the connecting spring 320, thereby causing the lifting frame 44 to move down and reset, and the lifting frame 44 moves down to cause the two grinding sleeves 43 to move on the rotating grinding rod 41 and disengage from the opening in the rectangular steel pipe. Through this arrangement, when the rectangular steel pipe performs the next punching operation, the rectangular steel pipe can be pushed by the feeding device 6 to move on the conveying plane 11 without being hindered by the grinding piece 4;

[0063] S6: After the punching device 2 punches holes in the rectangular steel pipe, the rotating rod 23 rotates to move the punching frame 28 upward, and the rotating rod 23 drives the rotating disk 24 to rotate. The rotating disk 24 will then pull the connecting rod 62 to move the sliding plate 61 toward the direction of the processing table 1. The sliding plate 61 moves downward and drives the push frame 63 to move downward. When the limiting wheel 67 on the limiting rod 64 contacts the inclined surface of the positioning groove 66, the limiting rod 64 drives the push frame 63 to slide horizontally on the sliding plate 61, and the push frame 63 slides with the push plate 68 through the vertical groove 69. At this time, the push plate 68 drives the clamping electric cylinder 610 to move, and the rectangular steel pipe clamped by the clamping electric cylinder 610 will move on the conveying platform, thereby adjusting the moving distance of the rectangular steel pipe at equal intervals, so that the rectangular steel pipe can be punched continuously at equal intervals.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A prefabricated beam punching device in a beam yard, characterized by: The invention comprises a processing table (1) arranged horizontally, wherein the top surface of the processing table (1) is provided with a conveying plane (11) for placing rectangular steel pipes, the top of the processing table (1) is also fixedly connected with a fixing frame (12), a punching device (2) is arranged on the fixing frame (12), the punching device (2) is located above the conveying plane (11), a placement cavity (13) is also opened on the processing table (1) below the conveying plane (11), and a transmission limit device (3) is connected to the inner wall of the placement cavity (13) of the processing table (1), and the transmission limit device (3) is in transmission cooperation with the punching device (2); The transmission limit device (3) is also provided with a fixing part (5) and a grinding part (4); the fixing part (5) is in sliding cooperation with the transmission limit device (3); the grinding part (4) is in transmission cooperation with the transmission limit device (3); the fixing part (5) is in rotation cooperation with the grinding part (4); and a feeding device (6) is also slidably provided on the fixing frame (12); The pushing and loading device (6) is in transmission cooperation with the punching device (2), and the pushing and loading device (6) is located above the conveying plane (11); The punching device (2) comprises a driving motor (21) fixedly connected to the top of the processing table (1), the main shaft of the driving motor (21) is connected to the driving disk (22) by transmission, the fixed frame (12) is provided with a rotating rod (23), both ends of the rotating rod (23) are rotatably matched with the fixed frame (12), one end of the rotating rod (23) facing the driving disk (22) is fixedly connected to the rotating disk (24), a driving belt (25) is sleeved between the driving disk (22) and the rotating disk (24), a punching rotating shaft (26) is eccentrically arranged on the rotating rod (23), a fixing plate (27) is fixedly connected between the inner walls of the fixed frame (12) which are arranged opposite to each other, a punching frame (28) is slidably arranged on the fixing plate (27), the top of the punching frame (28) is hingedly matched with the outer wall of the punching rotating shaft (26), the bottom of the punching frame (28) is provided with a punching body (29), and the punching body (29) is located above the conveying plane (11); The transmission limiting device (3) comprises a rotating gear (31) fixedly connected to an end of the rotating rod (23) away from the rotating disk (24); a transmission rod (32) is rotatably provided on the outer wall of the fixed frame (12); a transmission gear (33) meshing with the rotating gear (31) is fixedly connected to the transmission rod (32); a transmission disk (34) is also fixedly connected to the transmission rod (32); a rotating rod (35) is rotatably provided on the inner wall of the placement cavity (13) on the processing table (1); a rotating disk (36) is fixedly connected to the rotating rod (35); the transmission disk (34) and the rotating disk (36) are ), a transmission belt (37) is sleeved between the rotating rod (35), a first bevel gear (38) is fixedly connected to the end of the rotating rod (35), a support seat (39) is fixedly connected to the inner wall of the placement cavity (13) in the processing table (1), a driving rotating rod (310) is rotatably arranged on the support seat (39), an end of the driving rotating rod (310) facing the first bevel gear (38) is fixedly connected to the second bevel gear (311), the first bevel gear (38) and the second bevel gear (311) are meshed, and an end of the driving rotating rod (310) away from the second bevel gear (311) is fixedly connected to the driving helical gear (312); The transmission limiting device (3) further comprises a cam (313) rotatably arranged on the driving rotating rod (310), the outer wall of the cam (313) being provided with two cross-arranged limiting grooves (314), an adjustment plate (315) being slidably arranged on the support seat (39), an adjustment rod (316) being clamped on the adjustment plate (315), the bottom of the adjustment rod (316) being arranged in a conical shape, and the bottom of the adjustment rod (316) being located in the limiting groove (314) of the cam (313), and a pressure spring (317) being sleeved on the adjustment rod (316). The two ends of the pressure spring (317) are respectively connected to the bottom of the adjustment plate (315) and the adjustment rod (316); a moving rod (318) and a lifting rod (319) are also provided on the support seat (39) above the adjustment plate (315); the moving rod (318) and the lifting rod (319) are respectively located above the two limit grooves (314); the moving rod (318) and the lifting rod (319) are both sleeved with a connecting spring (320); the two ends of the connecting spring (320) are respectively connected to the inner top of the support seat (39) and the moving rod (318).

2. The precast beam punching equipment in a beam yard according to claim 1, characterized in that: The grinding member (4) comprises two rotating grinding rods (41) rotatably connected to a support seat (39), the two rotating grinding rods (41) are fixedly connected to rotating bevel gears (42), the two rotating bevel gears (42) are respectively located on both sides of a driving bevel gear (312), and the driving bevel gear (312) is in transmission cooperation with the two rotating bevel gears (42), the two rotating grinding rods (41) are both clamped with a grinding sleeve (43), and the outer wall of the grinding sleeve (43) A ring groove is provided on the top, a lifting frame (44) is slidably provided on the support seat (39), the lifting frame (44) is fixedly connected to the top of the lifting rod (319), and a clamping frame (45) is hingedly provided on the lifting frame (44) in the direction of the two grinding sleeves (43), and the clamping frame (45) is rotatably matched with the ring groove in the corresponding grinding sleeve (43), and a through opening is provided at the top of the processing table (1) and at the position corresponding to the two grinding sleeves (43).

3. The punching equipment for precast beams in a beam yard according to claim 2, characterized in that: The fixing member (5) comprises a movable clamping plate (51) slidably arranged on the inner wall of the support seat (39); a movable vertical groove (52) corresponding to the movable rod (318) and the lifting rod (319) is provided on the outer wall of the support seat (39); a wedge-shaped groove (53) is provided at a portion of the movable clamping plate (51) corresponding to the movable rod (318) and the lifting rod (319); a locking opening (54) is provided in the wedge-shaped groove (53) corresponding to the lifting rod (319); The movable rod (318) and the lifting rod (319) are both provided with positioning rods (55) extending in the direction of the movable vertical groove (52), and the positioning rods (55) are slidably engaged with the wedge-shaped groove (53). The movable card plate (51) is also provided with a sliding groove (56). A sliding block (57) slidably engaged with the sliding groove (56) is fixedly connected to the inner wall of the support seat (39), and a tension spring (58) is connected between the sliding block (57) and the movable card plate (51).

4. The punching equipment for precast beams in a beam yard according to claim 1, characterized in that: The feeding device (6) comprises a sliding plate (61) slidably arranged on the outer wall of the fixed frame (12); a connecting rod (62) is hingedly arranged on the end surface of the rotating disk (24); an end of the connecting rod (62) away from the rotating disk (24) is hingedly matched with the sliding plate (61); a pushing frame (63) is slidably arranged on the sliding plate (61); a limiting rod (64) is fixedly connected to the pushing frame (63); a positioning plate (65) is relatively fixedly connected to the outer wall of the fixed frame (12); and a slot is provided on the positioning plate (65). A positioning groove (66) is provided, the lower end of the positioning groove (66) is inclined and provided with an inclined surface, both ends of the limiting rod (64) are provided with limiting wheels (67), the limiting wheels (67) are located in the positioning groove (66), the top of the processing table (1) is located on both sides of the conveying plane (11) and a push plate (68) is slidably provided, the push plate (68) is provided with a vertical groove (69), the push frame (63) is slidably matched with the vertical groove (69), and the push plate (68) is also provided with a clamping electric cylinder (610).

5. A method for using a precast beam punching device in a beam yard, comprising the following steps: S1: A rectangular steel pipe is placed above the conveying plane (11). When punching holes on the surface of the rectangular steel pipe, the driving motor (21) drives the driving disk (22) to rotate. The driving disk (22) drives the rotating disk (24) to rotate via the driving belt (25), thereby causing the rotating rod (23) disposed on the rotating disk (24) to rotate. When the rotating rod (23) rotates, the punching rotating shaft (26) is eccentrically disposed on the rotating shaft (23), thereby causing the punching rotating shaft (26) to drive the punching frame (28) hinged at the bottom to move back and forth up and down above the conveying plane (11), thereby causing the punching body (29) at the bottom of the punching frame (28) to punch holes on the rectangular steel pipe. S2: After the rectangular steel tube is punched by the punching device (2), the rectangular steel tube is driven by the feeding device (6) to move toward the grinding member (4). At this time, the opening on the rectangular steel tube is located above the two grinding sleeves (43). At this time, the rotating rod (23) rotates again to make the punching body (29) face the surface of the rectangular steel tube for punching. The rotation of the rotating rod (23) drives the rotating gear (31) to rotate. The rotation of the rotating gear (31) drives the transmission gear (32) on the transmission rod (32). 3) rotation, the transmission gear (33) rotates, which drives the transmission disc (34) to rotate, and then the rotation disc (36) can be rotated under the drive of the transmission belt (37), and the rotation of the rotation disc (36) drives the rotating rod (35) to rotate the first bevel gear (38), and the rotation of the first bevel gear (38) drives the second bevel gear (311) to rotate, which causes the driving rotating rod (310) to rotate on the support seat (39), and the driving rotating rod (310) drives the grinding piece (4) to grind the opening of the rectangular steel pipe; S3; when the driving rotating rod (310) rotates, the driving rotating rod (310) drives the cam (313) to rotate to the raised end of the cam (313), and the raised end of the cam (313) drives the adjusting rod (316) to lift upward, and when the cam (313) rotates, it can drive the adjusting rod (316) to move along the limiting groove (314) driven by the limiting groove (314), so that the adjusting rod (316) can drive the adjusting plate (315) to slide on the supporting seat (39), and at this time, the adjusting rod (316) is located below the lifting rod (319), and the lifting rod (319) is lifted upward under the drive of the raised end of the cam (313), and when the lifting rod (319) is lifted upward, it drives the lifting frame (44) to move upward, and after the lifting frame (44) moves upward, the lifting frame (44) is moved upward. The clamping frame (45) arranged on the side will synchronously drive the two grinding sleeves (43) to move upward, and at this time, the two grinding sleeves (43) will move from the through hole on the top of the processing table (1) to the opening of the rectangular steel pipe, so that the two grinding sleeves (43) can contact the inner wall of the opening of the rectangular steel pipe, and the driving rod (310) can drive the driving bevel gear (312) to rotate at the same time, and the driving bevel gear (312) rotates synchronously to drive the two rotating bevel gears (42) to rotate, and the two rotating bevel gears (42) will simultaneously drive the two rotating grinding rods (41) to rotate, and the two grinding sleeves (43) are clamped on the rotating grinding rod (41), and driven by the rotating grinding rod (41), the two grinding sleeves (43) can rotate, thereby realizing the grinding processing of the rectangular steel pipe opening; S4: When the adjusting rod (316) contacts the bottom of the lifting rod (319) driven by the cam (313), the adjusting rod (316) drives the lifting rod (319) to move upward, and the positioning rod (55) on the lifting rod (319) passes through the movable vertical groove (52) on the support seat (39), and the positioning rod (55) contacts the wedge-shaped groove (53) on the movable clamping plate (51) when moving, so that the positioning rod (55) can drive the movable clamping plate (51) to move toward the grinding piece (4) when moving upward. When the positioning rod (55) on the lifting rod (319) moves to the locking mouth (54) in the wedge-shaped groove (53), the locking mouth (54) will lock the positioning rod (55) under the drive of the tension spring (58) between the movable clamping plate (51) and the support seat (39), thereby positioning the lifting rod (319). At this time, the lifting rod (319) is in a state of lifting and moving the lifting frame (44). At this time, when the two grinding sleeves (43) are at the opening in the rectangular steel pipe, the opening of the rectangular steel pipe can be stably ground; S5: After the punching device (2) punches the rectangular steel pipe, the rotating rod (23) drives the punching frame to move upward, driving the rotating rod (310) to drive the cam (313) to rotate, and the limiting groove (314) on the cam (313) causes the adjusting rod (316) to move to the bottom of the moving rod (318). The raised end of the cam (313) contacts the bottom of the adjusting rod (316), and the adjusting rod (316) is lifted toward the moving rod (318). When the moving rod (318) is lifted, the positioning rod (55) on the moving rod (318) passes through the moving vertical groove (52) and contacts the wedge-shaped groove (53) on the moving card plate (51). At this time, the wedge-shaped groove (53) causes the moving card plate (51) to move again. The lifting rod (319) slides on the support seat (39), and the positioning rod (55) on the lifting rod (319) is separated from the locking mouth (54) of the corresponding wedge-shaped groove (53). At this time, the locking mouth (54) no longer locks the positioning rod (55), and the lifting rod (319) is quickly reset under the drive of the connecting spring (320), thereby causing the lifting frame (44) to move downward and reset. The lifting frame (44) moves downward so that the two grinding sleeves (43) move on the rotating grinding rod (41) and disengage from the opening in the rectangular steel pipe. Through this arrangement, when the rectangular steel pipe is subjected to the next punching operation, the rectangular steel pipe can be pushed by the feeding device (6) to move on the conveying plane (11) without being hindered by the grinding member (4); S6: After the punching device (2) punches holes in the rectangular steel pipe, the rotating rod (23) rotates to move the punching frame (28) upward, and the rotating rod (23) drives the rotating disk (24) to rotate. The rotating disk (24) then pulls the connecting rod (62) to move the sliding plate (61) toward the processing table (1). The sliding plate (61) moves downward, which drives the push frame (63) to move downward. When the limiting wheel (67) on the limiting rod (64) and the positioning groove (66) are aligned, the connecting rod (62) and the positioning groove (66) are aligned. When the inclined surfaces are in contact, the limiting rod (64) drives the push frame (63) to slide horizontally on the sliding plate (61), and the push frame (63) slides with the push plate (68) through the vertical groove (69). At this time, the push plate (68) drives the clamping electric cylinder (610) to move, and the rectangular steel pipe clamped by the clamping electric cylinder (610) moves on the conveying platform, thereby adjusting the moving distance of the rectangular steel pipe at equal intervals, so that the rectangular steel pipe can be punched continuously at equal intervals.

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