Inserted bar and bar arrangement structure of a concrete manhole cover and manhole cover production equipment

Abstract

The present invention is applicable to the field of production of concrete manhole covers, and provides an inserting and arranging structure of steel bars for a concrete manhole cover and a production device for the manhole cover, including: a steel bar frame. The design of the present invention is novel. The rotating inner gear ring cover can drive the rotating frame fixed thereon to rotate. The rotating rotating frame drives the pressing plate to move through the second hydraulic rod installed thereon. Of course, the installed second hydraulic rod can drive the pressing plate to move up and down to press the concrete, making the concrete in the mold level faster, facilitating the placement of the steel bar frame and subsequent forming. The rotation of the inner gear ring cover drives the pressing plate to rotate through the rotating frame installed thereon, and the pressing plate moves. When the pressing plate moves to a position close to the scraper, the moving pressing plate removes the concrete material on the pressing plate through the scraper, so that no concrete is generated and solidified on the pressing plate, which will not affect the concrete in the mold and makes the quality of the formed concrete manhole cover better.

Description

Technical Field

[0001] The present invention relates to the field of production of concrete manhole covers, and specifically to an inserting and arranging steel bar structure for a concrete manhole cover and a manhole cover production device. Background Technique

[0002] There are many underground pipelines in urban construction, such as sewer pipes, underground gas pipes, tap water pipes, power pipes, communication pipes, national defense pipes, etc. These pipes need to have an outlet leading to the ground at regular intervals. The section from the pipe to the ground is called a manhole. The manhole opening is usually flush with the ground. Therefore, a lid is needed to cover the manhole, and the lid is called a manhole cover. A manhole cover made of concrete as the main material is called a concrete manhole cover.

[0003] When producing a concrete manhole cover, it needs to be made by pouring concrete with a steel bar structure as a support. When pouring the concrete into the mold, the concrete falling into the mold will accumulate. At this time, if it is necessary to quickly put the steel bar structure into the concrete, the concrete needs to be leveled. Of course, it is also necessary to level the concrete after it is poured into the mold. When leveling the concrete, there will be residual concrete sticking to the pressing plate, resulting in the solidification of the residual concrete, making it impossible to level the next batch of concrete. Summary of the Invention

[0004] The purpose of the present invention is to provide an inserting and arranging steel bar structure for a concrete manhole cover and a manhole cover production device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An inserting and arranging steel bar structure for a concrete manhole cover, comprising:

[0007] A steel bar frame is placed inside the concrete manhole cover. The steel bar frame includes a plurality of annular steel bars with different diameters. A plurality of strip-shaped steel bars are placed on the annular steel bars and are distributed along the circumference of the annular steel bars. The plurality of strip-shaped steel bars are connected to the annular steel bars by welding. The steel bar frame is placed into the unformed concrete manhole cover through a manhole cover production device, so that the manhole cover and the steel bar frame become an integral body after the manhole cover is formed.

[0008] A concrete manhole cover production device, comprising:

[0009] A bottom plate, on one side of the bottom plate, there is a first mounting frame fixedly installed on the bottom plate. On one side of the first mounting frame, there is a second mounting frame fixedly installed on the bottom plate. A plurality of transmission rollers are rotatably connected between the first mounting frame and the second mounting frame. A mold is placed on the transmission rollers. Above the mold, there is a discharge pipe for filling concrete raw materials into the mold. An ejection assembly is installed on the second mounting frame. The discharge pipe is installed on the ejection assembly, and the ejection assembly places the steel bar frame into the mold;

[0010] The mold is provided with a pressing plate for leveling the concrete falling into it. A driving component connected to the pressing plate is installed on the first mounting frame, and the driving component drives the pressing plate to move.

[0011] As a further solution of the present invention: The discharging component includes a discharging frame fixedly installed on the second mounting frame. A circular hole is provided on the discharging frame, and a storage cylinder is fixedly installed in the circular hole. The discharging pipe is fixedly installed on the storage cylinder. A pushing plate is slidably connected inside the discharging frame. Through slots are provided on both sides of the discharging frame. A round rod is fixedly installed in one of the through slots. A slider fixedly installed with the pushing plate is slidably connected to the round rod. A pushing plate is slidably connected in the other through slot. A first hydraulic rod is fixedly installed on the discharging frame, and the movable end of the first hydraulic rod is fixedly installed with the pushing plate.

[0012] As a further solution of the present invention: The driving component includes a cylinder fixedly installed on the first mounting frame. A circular hole is provided on the cylinder, and an internal tooth ring cover is rotatably connected in the circular hole. A rotating frame is fixedly installed on the internal tooth ring cover. A through hole is provided on the side of the rotating frame away from the internal tooth ring cover. A second hydraulic rod is rotatably connected in the through hole, and the movable end of the second hydraulic rod is fixedly installed with the pressing plate.

[0013] As a further solution of the present invention: A long strip frame is fixedly installed on one side of the cylinder. A plurality of circular holes are provided on the long strip frame. A cylinder is slidably connected in the circular hole. A compression spring is abutted between the cylinder and the inner wall of the circular hole. The cylinder extends outside the circular hole and is fixedly installed with a scraping plate.

[0014] As a further solution of the present invention: An installation groove extending into the cylinder is provided on the first mounting frame. A servo motor is fixedly installed in the installation groove. The output shaft of the servo motor is fixedly installed with a second incomplete gear that cooperates with the internal tooth ring cover. A first incomplete gear is rotatably connected inside the cylinder. A second gear that cooperates with the second incomplete gear is fixedly installed on the rotating shaft of the first incomplete gear. A transmission rod is fixedly installed on the rotating shaft of the second gear. The transmission rod extends to the other side of the rotating frame. Holes for the transmission rod to rotate are provided on the internal tooth ring cover and the rotating frame. A cylinder is fixedly installed on the fixed end of the second hydraulic rod. A transmission belt is installed between the cylinder and the transmission rod.

[0015] As a further solution of the present invention: A rack ring that cooperates with it is sleeved on the first incomplete gear. Prismatic rods are fixedly installed on both sides of the rack ring. One of the prismatic rods is slidably connected with a support frame that supports it. The support frame is fixedly installed inside the cylinder. A circular groove is provided on the cylinder, and a first piston cylinder is fixedly installed in the circular groove. The other prismatic rod extends into the first piston cylinder and is fixedly installed with a piston plate. The first piston cylinder is fixedly installed with a first connecting pipe. The end of the first connecting pipe away from the first piston cylinder penetrates the rotating frame and is fixedly installed with the second hydraulic rod.

[0016] As a further solution of the present invention: A plurality of teeth distributed in a circle are fixedly installed on the outer wall of the internal gear ring cover. A first gear cooperating with the teeth is rotatably connected to the first mounting frame. The rotating shaft of the first gear extends to the other side of the first mounting frame and is fixedly installed with a threaded rod. A second piston cylinder is fixedly installed on the first mounting frame. A piston rod on one side of the second piston cylinder is fixedly installed with a moving plate meshing with the threaded rod. A second connecting pipe is installed between the second piston cylinder and the first hydraulic rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has a novel design. The internal gear ring cover fixed on the cylinder can rotate. The rotating internal gear ring cover can drive the rotating frame fixed on it to rotate. The rotating rotating frame drives the pressing plate to move through the second hydraulic rod installed on it. Of course, the installed second hydraulic rod can drive the pressing plate to move up and down. Since the concrete material discharged into the mold from the discharge pipe is in a piled state, it is necessary to press it to make the concrete in the mold level faster, which is convenient for placing the steel bar frame and subsequent forming. The rotation of the internal gear ring cover drives the pressing plate to rotate through the rotating frame installed on it, and the pressing plate moves. When the pressing plate moves to a position close to the scraper, the moving pressing plate clears the concrete material on the pressing plate through the scraper, so that no concrete will be generated and solidified on the pressing plate, which will not affect the concrete in the mold, and the quality of the formed concrete manhole cover is better. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0019] Figure 2 It is a structural schematic diagram of the pushing plate in an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0020] Figure 3 It is an enlarged structural schematic diagram of the pressing plate in an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0021] Figure 4 It is a structural schematic diagram of the second gear in an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0022] Figure 5 It is a structural schematic diagram of the threaded rod in an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0023] Figure 6 It is an internal structural schematic diagram of the internal gear ring cover in an embodiment of the steel bar inserting and distributing structure for a concrete manhole cover and the manhole cover production equipment.

[0024] Figure 7 It is a schematic enlarged structure diagram of a steel bar frame in an embodiment of the steel bar arrangement structure for a concrete manhole cover and a manhole cover production device.

[0025] In the figure: 1, bottom plate; 2, first mounting frame; 3, second mounting frame; 4, transmission roller; 5, mold; 6, discharge rack; 7, storage cylinder; 8, push plate; 9, first hydraulic rod; 10, discharge pipe; 11, steel bar frame; 12, pushing plate; 13, round rod; 14, long bar frame; 15, scraper; 16, cylinder; 17, pressing plate; 18, rotating frame; 19, second hydraulic rod; 20, transmission belt; 21, cogs; 22, internal gear ring cover; 23, first gear; 24, first piston cylinder; 25, first connecting pipe; 26, transmission rod; 27, rack ring; 28, prism rod; 29, support frame; 30, first incomplete gear; 31, second gear; 32, servo motor; 33, threaded rod; 34, moving plate; 35, second piston cylinder; 36, second connecting pipe; 37, second incomplete gear. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, and it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0028] Please refer to Figures 1 to 7 , in an embodiment of the present invention, a steel bar arrangement structure for a concrete manhole cover includes:

[0029] Please refer to Figure 7 , a steel bar frame 11, the steel bar frame 11 is placed in the concrete manhole cover, the steel bar frame 11 includes a plurality of annular steel bars with different diameters, and a plurality of strip steel bars are placed on the annular steel bars and are distributed along the circumference of the annular steel bars. The plurality of strip steel bars are connected to the annular steel bars by welding. The steel bar frame 11 is placed into the unformed concrete manhole cover by a manhole cover production device, so that the manhole cover and the steel bar frame 11 become an integral body after forming.

[0030] The concrete manhole cover formed integrally by the steel bar frame 11 and concrete is more firm, enabling the concrete manhole cover to bear a greater weight. Of course, after the concrete manhole cover is damaged through the steel bar frame 11, the split concrete can still be connected together through the steel bar frame 11.

[0031] A bottom plate 1, one side of the bottom plate 1 is provided with a first mounting frame 2 fixedly mounted on the bottom plate 1, one side of the first mounting frame 2 is provided with a second mounting frame 3 fixedly mounted on the bottom plate 1, a plurality of transmission rollers 4 are rotatably connected between the first mounting frame 2 and the second mounting frame 3, a mold 5 is placed on the transmission rollers 4, an outlet pipe 10 for filling concrete raw materials into the mold 5 is arranged above the mold 5, a discharging assembly is mounted on the second mounting frame 3, the outlet pipe 10 is mounted on the discharging assembly, and the discharging assembly places the steel bar frame 11 into the mold 5.

[0032] When using the equipment to produce the concrete manhole cover, the new mold 5 is pushed below the outlet pipe 10 by the lower transmission rollers 4, the outlet pipe 10 is opened to discharge the concrete raw materials into the mold 5. When the concrete materials in the mold 5 reach half, the steel bar frame 11 is placed into the mold 5 through the discharging assembly on one side, and the outlet pipe 10 continues to discharge materials to submerge the steel bar frame 11 and fill the mold 5.

[0033] Please refer to Figure 1 、 Figure 2 As shown in, the discharging assembly includes a discharging frame 6 fixedly mounted on the second mounting frame 3. A circular hole is formed in the discharging frame 6, and a storage cylinder 7 is fixedly mounted in the circular hole. The outlet pipe 10 is fixedly mounted on the storage cylinder 7. A pushing plate 12 is slidably connected in the discharging frame 6. Through grooves are formed on both sides of the discharging frame 6. A round rod 13 is fixedly mounted in one of the through grooves. A slider fixedly mounted with the pushing plate 12 is slidably connected on the round rod 13. A pushing plate 8 is slidably connected in the other through groove. A first hydraulic rod 9 is fixedly mounted on the discharging frame 6, and the movable end of the first hydraulic rod 9 is fixedly mounted with the pushing plate 8.

[0034] When the steel bar frame 11 needs to be filled and placed, the first hydraulic rod 9 on one side operates, the movable end of the first hydraulic rod 9 pushes the pushing plate 8 on one side to move, the moving pushing plate 8 drives the pushing plate 12 connected thereto to move to one side, and the moving pushing plate 12 pushes the steel bar frame 11 stored in the storage cylinder 7 out of the discharging frame 6. Because the slider slides on the round rod 13 and is fixedly mounted with the pushing plate 12 on one side, the pushing plate 12 is more stable when moving.

[0035] A pressing plate 17 for leveling the concrete falling into the mold 5 is provided on the mold 5. A driving assembly connected to the pressing plate 17 is installed on the first mounting frame 2, and the driving assembly drives the pressing plate 17 to move.

[0036] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 , the driving assembly includes a cylinder 16 fixedly installed on the first mounting frame 2. A circular hole is provided on the cylinder 16, and an internal gear ring cover 22 is rotatably connected in the circular hole. A rotating frame 18 is fixedly installed on the internal gear ring cover 22. A through hole is provided on one side of the rotating frame 18 away from the internal gear ring cover 22, and a second hydraulic rod 19 is rotatably connected in the through hole. The movable end of the second hydraulic rod 19 is fixedly installed with the pressing plate 17.

[0037] The internal gear ring cover 22 fixed on the cylinder 16 can rotate. The rotating internal gear ring cover 22 can drive the rotating frame 18 fixed on it to rotate. The rotating rotating frame 18 drives the pressing plate 17 to move through the second hydraulic rod 19 installed on it. Of course, the pressing plate 17 can be driven to move up and down through the installed second hydraulic rod 19. Since the concrete material discharged from the discharge pipe 10 into the mold 5 is in a piled state, it is necessary to press it to make the concrete in the mold 5 level faster, which is convenient for the placement of the steel bar frame 11 and subsequent forming.

[0038] Please refer to Figure 1 , Figure 3 , a long bar frame 14 is fixedly installed on one side of the cylinder 16. A plurality of circular holes are provided on the long bar frame 14, and a cylinder is slidably connected in the circular holes. A compression spring is abutted between the cylinder and the inner wall of the circular hole. The cylinder extends outside the circular hole and is fixedly installed with a scraping plate 15.

[0039] The rotation of the internal gear ring cover 22 drives the pressing plate 17 to rotate through the rotating frame 18 installed on it, and the pressing plate 17 moves. When the pressing plate 17 moves to a position close to the scraping plate 15, the moving pressing plate 17 clears the concrete material on the pressing plate 17 through the scraping plate 15, so that no concrete will be generated and solidified on the pressing plate 17, which will not affect the concrete in the mold 5 and make the quality of the formed concrete manhole cover better.

[0040] Please refer to Figure 3 , Figure 4 , Figure 6, an installation groove extending into the cylinder 16 is formed on the first mounting bracket 2. A servo motor 32 is fixedly installed in the installation groove. A second incomplete gear 37 engaged with the internal gear ring cover 22 is fixedly installed on the output shaft of the servo motor 32. A first incomplete gear 30 is rotatably connected in the cylinder 16. A second gear 31 engaged with the second incomplete gear 37 is fixedly installed on the rotating shaft of the first incomplete gear 30. A transmission rod 26 is fixedly installed on the rotating shaft of the second gear 31. The transmission rod 26 extends to the other side of the rotating frame 18. Through holes for the transmission rod 26 to rotate are formed in the internal gear ring cover 22 and the rotating frame 18. A cylinder is fixedly installed on the fixed end of the second hydraulic rod 19. A transmission belt 20 is installed between the cylinder and the transmission rod 26.

[0041] When the equipment is operating, the servo motor 32 operates. The output shaft of the servo motor 32 rotates to drive the second incomplete gear 37 fixedly installed thereon to rotate. When the second incomplete gear 37 rotates to a position meshed with the internal gear ring cover 22 on one side, it drives the internal gear ring cover 22 to rotate. When the second incomplete gear 37 continues to rotate and meshes with the second gear 31 on the other side, the meshed second gear 31 rotates. The rotating second gear 31 drives the transmission rod 26 fixedly installed thereon to rotate. The rotating transmission rod 26 drives the second hydraulic rod 19 on the other side to rotate through the transmission belt 20 installed thereon. The rotation of the second hydraulic rod 19 drives the pressing plate 17 below to rotate. The concrete adhered to the pressing plate 17 can be quickly removed through the rotation of the pressing plate 17.

[0042] Please refer to Figure 3 , Figure 4 , Figure 6 , a rack ring 27 engaged with the first incomplete gear 30 is sleeved on the first incomplete gear 30. Prismatic rods 28 are fixedly installed on both sides of the rack ring 27. One of the prismatic rods 28 is slidably connected to a support frame 29 for supporting it. The support frame 29 is fixedly installed in the cylinder 16. A circular groove is formed on the cylinder 16. A first piston cylinder 24 is fixedly installed in the circular groove. The other prismatic rod 28 extends into the first piston cylinder 24 and is fixedly installed with a piston plate. The first piston cylinder 24 is fixedly installed with a first connecting pipe 25. One end of the first connecting pipe 25 away from the first piston cylinder 24 penetrates through the rotating frame 18 and is fixedly installed with the second hydraulic rod 19.

[0043] Since the second gear 31 is fixed to the lower first incomplete gear 30, when the upper second gear 31 rotates, it will drive the lower first incomplete gear 30 to rotate. When the rotating first incomplete gear engages with the teeth on one side of the rack ring 27, it drives the rack ring 27 to move to one side. The moving rack ring 27 drives the prism rod 28 fixed thereto to move. The moving prism rod 28 drives the piston block in the first piston cylinder 24 to move back and forth to suck the liquid, and the movable end of the second hydraulic rod 19 is moved through the first connecting pipe 25 on one side.

[0044] Please refer to Figure 3 、 Figure 4 、 Figure 6 On the outer wall of the internal gear ring cover 22, a plurality of teeth 21 distributed in a circular pattern are fixedly installed. A first gear 23 that cooperates with the teeth 21 is rotatably connected to the first mounting bracket 2. The rotating shaft of the first gear 23 extends to the other side of the first mounting bracket 2 and is fixedly installed with a threaded rod 33. A second piston cylinder 35 is fixedly installed on the first mounting bracket 2. A moving plate 34 that engages with the threaded rod 33 is fixedly installed on the piston rod on one side of the second piston cylinder 35. A second connecting pipe 36 is installed between the second piston cylinder 35 and the first hydraulic rod 9.

[0045] When the internal gear ring cover 22 rotates and the teeth 21 installed thereon engage with the first gear 23 on one side, the continuously rotating internal gear ring cover 22 drives the lower threaded rod 33 to rotate. The rotating threaded rod 33 drives the moving plate 34 engaged therewith to move. The moving moving plate 34 sucks the liquid back and forth through the piston rod fixed on one side, and drives the first hydraulic rod 9 on one side to operate through the second connecting pipe 36 installed on the second piston cylinder 35.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A production equipment for concrete manhole covers, characterized in that An inserting and distributing steel bar structure including a concrete manhole cover and a bottom plate (1); The inserting and distributing steel bar structure of the concrete manhole cover includes a steel bar frame (11). The steel bar frame (11) is placed inside the concrete manhole cover. The steel bar frame (11) includes a plurality of annular steel bars with different diameters. A plurality of strip steel bars are placed on the annular steel bars and are distributed circumferentially along the annular steel bars. The plurality of strip steel bars are connected to the annular steel bars by welding. The steel bar frame (11) is placed into the unformed concrete manhole cover through manhole cover production equipment, so that the manhole cover and the steel bar frame (11) become an integral body after the manhole cover is formed; One side of the bottom plate (1) is provided with a first mounting frame (2) fixedly mounted on the bottom plate (1). One side of the first mounting frame (2) is provided with a second mounting frame (3) fixedly mounted on the bottom plate (1). A plurality of transmission rollers (4) are rotatably connected between the first mounting frame (2) and the second mounting frame (3). A mold (5) is placed on the transmission rollers (4). Above the mold (5) is a discharge pipe (10) for filling concrete raw materials into the mold (5). A discharge assembly is mounted on the second mounting frame (3). The discharge pipe (10) is mounted on the discharge assembly. The discharge assembly places the steel bar frame (11) into the mold (5); The mold (5) is provided with a pressing plate (17) for leveling the concrete falling into it. A driving assembly connected to the pressing plate (17) is mounted on the first mounting frame (2). The driving assembly drives the pressing plate (17) to move; The driving assembly includes a cylinder (16) fixedly mounted on the first mounting frame (2). A round hole is opened in the cylinder (16). An internal tooth ring cover (22) is rotatably connected in the round hole. A rotating frame (18) is fixedly mounted on the internal tooth ring cover (22). A through hole is opened on one side of the rotating frame (18) away from the internal tooth ring cover (22). A second hydraulic rod (19) is rotatably connected in the through hole. The movable end of the second hydraulic rod (19) is fixedly mounted on the pressing plate (17); One side of the cylinder (16) is fixedly mounted with a long strip frame (14). A plurality of round holes are opened in the long strip frame (14). A cylinder is slidably connected in the round hole. A compression spring is abutted between the cylinder and the inner wall of the round hole. The cylinder extends out of the round hole and is fixedly mounted with a scraping plate (15).

2. The production equipment of a concrete manhole cover according to claim 1, characterized in that, The discharging assembly includes a discharging rack (6) fixedly installed on the second mounting rack (3). A round hole is formed in the discharging rack (6), and a material storage cylinder (7) is fixedly installed in the round hole. The discharging pipe (10) is fixedly installed on the material storage cylinder (7). A pushing plate (12) is slidably connected in the discharging rack (6). Through chutes are formed on both sides of the discharging rack (6). A round rod (13) is fixedly installed in one of the through chutes. A slider fixedly installed with the pushing plate (12) is slidably connected to the round rod (13). A pushing plate (8) is slidably connected in the other through chute. A first hydraulic rod (9) is fixedly installed on the discharging rack (6), and the movable end of the first hydraulic rod (9) is fixedly installed with the pushing plate (8).

3. The production equipment of a concrete manhole cover according to claim 2, characterized in that, An installation groove extending into the cylinder (16) is formed in the first mounting rack (2). A servo motor (32) is fixedly installed in the installation groove. The output shaft of the servo motor (32) is fixedly installed with a second incomplete gear (37) cooperating with the inner tooth ring cover (22). A first incomplete gear (30) is rotatably connected in the cylinder (16). A second gear (31) cooperating with the second incomplete gear (37) is fixedly installed on the rotating shaft of the first incomplete gear (30). A transmission rod (26) is fixedly installed on the rotating shaft of the second gear (31). The transmission rod (26) extends to the other side of the rotating frame (18). The inner tooth ring cover (22) and the rotating frame (18) are provided with holes for the transmission rod (26) to rotate. A cylinder is fixedly installed on the fixed end of the second hydraulic rod (19). A transmission belt (20) is installed between the cylinder and the transmission rod (26).

4. The production equipment of a concrete manhole cover according to claim 3, characterized in that, The first incomplete gear (30) is sleeved with a rack ring (27) cooperating with it. Prismatic rods (28) are fixedly installed on both sides of the rack ring (27). One of the prismatic rods (28) is slidably connected with a support frame (29) for supporting it. The support frame (29) is fixedly installed in the cylinder (16). A round groove is formed in the cylinder (16), and a first piston cylinder (24) is fixedly installed in the round groove. The other prismatic rod (28) extends into the first piston cylinder (24) and is fixedly installed with a piston plate. The first piston cylinder (24) is fixedly installed with a first connecting pipe (25). One end of the first connecting pipe (25) far from the first piston cylinder (24) penetrates through the rotating frame (18) and is fixedly installed with the second hydraulic rod (19).

5. A production device for a concrete manhole cover according to claim 4, characterized in that, A plurality of circumferentially distributed locking teeth (21) are fixedly installed on the outer wall of the internal gear ring cover (22). A first gear (23) that cooperates with the locking teeth (21) is rotatably connected to the first mounting bracket (2). The rotating shaft of the first gear (23) extends to the other side of the first mounting bracket (2) and is fixedly installed with a threaded rod (33). A second piston cylinder (35) is fixedly installed on the first mounting bracket (2). A moving plate (34) that meshes with the threaded rod (33) is fixedly installed on the piston rod on one side of the second piston cylinder (35). A second connecting pipe (36) is installed between the second piston cylinder (35) and the first hydraulic rod (9).

Images