A double-station drilling rig for processing heat exchanger parts

Abstract

The present invention relates to the field of drilling processing technology, and specifically to a double-station drilling rig for processing heat exchanger parts, comprising a support plate, a drilling rig adjustment frame installed on the support plate, and a clamping plate installed on the support plate, wherein a plurality of clamping assemblies are evenly installed on the clamping plate around its center position, and the clamping assembly comprises a sliding seat slidably connected to the clamping plate, a clamping arc plate installed on the upper side of the sliding seat, and a lower plate slidably connected to the lower part of the clamping arc plate, an upper pressure plate is connected above the lower plate, and one end of the lower plate close to the center position of the clamping plate is an arc structure, and the other end of the lower plate is an L-shaped structure. The clamping assembly of the present invention can clamp and lock end plates of different sizes by supporting the lower end of the outside, clamping the upper end of the outside, and clamping the outer side surface, thereby increasing the stability of the end plate and preventing the end plate from shaking during the drilling process, resulting in deviations in the position of the threaded holes of the end plate, thereby affecting the sealing performance of the heat exchanger.

Description

Technical Field

[0001] The invention relates to the technical field of drilling processing, in particular to a double-station drilling machine for processing heat exchanger parts. Background Art

[0002] A heat exchanger, also known as a heat exchanger, is a device that transfers part of the heat of a hot fluid to a cold fluid. The middle part of a commonly used shell and tube heat exchanger is tubular, and its two ends are closed by end plates. Bolt holes need to be drilled between the tubular structure in the middle of the heat exchanger and the end plates so that the end plates can lock and seal the tubular structure in the middle of the heat exchanger.

[0003] There are an even number of bolt holes on the end plate of the heat exchanger. Before drilling, the end plate needs to be clamped and supported at the bottom of the end plate so that the bottom of the end plate is higher than the base on which the end plate is placed to prevent damage to the base during the drilling operation of the end plate. However, in the above-mentioned process of clamping and locking the end plate, due to the different sizes of the end plates and the slight deviation in the distance between the threaded holes of the end plates and their outer annular surfaces, when the threaded holes of the end plates are close to their outer annular surfaces, the support at the bottom of the end plate will affect the drilling operation of the end plate. In the prior art, there is also a method of locking by supporting the lower side surface of the middle part of the end plate and clamping the outer side surface. This method also has the risk of lateral deviation of the end plate due to the force on one side of the end plate when drilling.

[0004] In addition, when drilling holes in the end plate of the heat exchanger, one hole is drilled at a time. This processing method not only has low drilling efficiency, but also causes the end plate to deviate in position due to uneven force, thereby affecting the processing accuracy of the end plate. After the threaded hole at the end plate drill position is processed, the end plate will be rotated to the next drilling position. However, after the end plate is rotated, due to mechanical errors and unlimited guides, the end plate may not be rotated in place or rotated too much, resulting in internal stress when the end plate and the tubular structure of the heat exchanger are locked later, thereby affecting the sealing performance of the heat exchanger. Summary of the invention

[0005] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a double-station drilling rig for processing heat exchanger parts, comprising a support plate, a drilling rig adjustment frame installed on the support plate, a drilling rig installed on the lower side of the drilling rig adjustment frame, and a clamping plate installed on the support plate and located below the drilling rig. A plurality of clamping assemblies are evenly installed on the clamping plate around its center position. The lower side surface of the middle part of the clamping plate is installed in the middle part of the support plate through a transposition motor. There are two drilling rigs distributed on the left and right. Both drilling rigs are slidably connected to the lower side of the drilling rig adjustment frame on the left and right, and the two drilling rigs are synchronously position-adjusted through an adjusting member.

[0006] The clamping assembly includes a sliding seat slidably connected to the clamping support plate, a clamping arc plate installed on the upper side of the sliding seat, and a lower support plate slidably connected to the lower part of the clamping arc plate. An upper pressure plate is connected above the lower support plate, and one end of the upper pressure plate close to the center of the clamping support plate passes through the clamping arc plate. One end of the lower support plate close to the center of the clamping support plate is an arc structure, and the other end of the lower support plate is an L-shaped structure. A placement groove for accommodating it is provided on the end of the clamping arc plate corresponding to the arc structure of the lower support plate.

[0007] An arc track block is distributed under each of the drilling rigs, and the arc track block is installed on the support plate through a bracket. An arc protrusion is integrally formed in the middle of the side of the arc track block away from the center position of the clamping plate. When the L-shaped structure of the lower support plate moves to the position of the arc track block, the lower support plate moves to the side away from the center position of the clamping plate under the guidance of the arc protrusion.

[0008] Preferably, the sliding seats on the multiple clamping assemblies are synchronously position-adjusted via a linkage adjustment assembly, the linkage adjustment assembly includes an adjustment ring rotatably mounted on the clamping plate and located between the multiple sliding seat structures, a pulling rod hinged on the outside of the adjustment ring, one end of the pulling rod away from the adjustment ring is hinged to the side of the sliding seat at the corresponding position, and the linkage adjustment assembly also includes a rotating adjustment member mounted on the side of the adjustment ring.

[0009] Preferably, the rotating adjustment member includes a telescopic plate installed on the side of the adjustment ring, a rotating plate hinged at the telescopic end of the telescopic plate, and an adjusting stud rotatably connected to the side of the rotating plate. The middle part of the adjusting stud is connected to a press-fit plate by threaded fitting, and the press-fit plate is installed on the clamping support plate.

[0010] Preferably, a return elastic member is provided between the middle part of the lower supporting plate and the clamping arc plate, the upper pressure plate includes a follower shell plate with an open end near the center position of the clamping supporting plate, a shift plate slidably connected to the end of the follower shell plate near the center position of the clamping supporting plate, the end of the follower shell plate away from the center position of the clamping supporting plate is connected with a height stud by threaded fitting, the bottom of the height stud is rotatably connected to the upper side surface of the lower supporting plate, guide pillars are slidably connected to both sides of the follower shell plate, and the lower ends of the guide pillars are installed on the side surfaces of the lower supporting plate.

[0011] Preferably, a plurality of elastic clamping layers evenly arranged along the arc-shaped structure of the clamping arc plate are provided on one side of the clamping arc plate close to the center of the clamping support plate, and scale marks are provided on the guide column.

[0012] Preferably, the upper and lower side walls of the follower shell plate on one side close to the center position of the clamping support plate are provided with through grooves, the middle part of the shift plate is provided with a parallelogram groove and a square give-way groove, a toggle block is arranged below the shift plate, a conduction rod is installed on the lower side of the toggle block, the conduction rod extends to the inside of the clamping arc plate, and passes through the sliding seat and the clamping support plate in sequence, and the lower end of the conduction rod is located below the clamping support plate.

[0013] Preferably, the upper end of the toggle block is a side-standing trapezoidal structure. When the lower supporting plate is not in contact with the arc track block, the position of the toggle block corresponds to the position of the parallelogram groove. When the lower supporting plate is in contact with the arc track block, the position of the toggle block corresponds to the position of the square give way groove.

[0014] Preferably, an insertion ring is arranged below the clamping plate and on the outside of the transposition motor, and the insertion ring is installed on the support plate through a spring rod. Positioning pins are symmetrically arranged on the upper side of the insertion ring, and positioning holes corresponding to the positions of the positioning pins are symmetrically arranged along the center position of the lower side of the clamping plate.

[0015] Preferably, a pushing column is installed on the lower side of the drilling rig adjustment frame, and a lifting member is provided between the lower part of the insertion ring and the support plate. The lifting member is used when the drilling rig drills holes in the heat exchanger parts downward. The pushing column drives the insertion ring to move upward through the lifting member, so that the positioning column is inserted into the positioning hole at the corresponding position. At the same time, the insertion ring drives the conduction rod to move upward and then drives the toggle block to move upward synchronously, so that the toggle block drives the shift plate to extend from the follower shell plate through the parallelogram groove.

[0016] Preferably, the lifting member includes an isosceles trapezoidal block slidably connected to the support plate, a matching extension block installed on the lower side of the clamping plate and located on the side of the isosceles trapezoidal block close to the center of the clamping plate, the matching extension block and the inclined surfaces of the isosceles trapezoidal block corresponding to the pushing column are both matched with inclined surfaces, and a return spring is provided at the position where the isosceles trapezoidal block slides on the support plate.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention adjusts the positions of the two drilling rigs synchronously so that two bolt holes at symmetrical positions on the end plate are drilled synchronously, thereby increasing the processing efficiency of the end plate drilling. Moreover, the end plate is in a state of uniform force during the drilling operation through the above-mentioned drilling method, so that the end plate will not be deflected in position, thereby increasing the stability of the end plate drilling.

[0018] 2. The clamping assembly of the present invention can clamp and lock end plates of different sizes by supporting the lower end of the outer side, clamping the upper end of the outer side, and clamping the outer side surface, thereby increasing the stability of the end plate and preventing the end plate from shaking during the drilling process, which would cause deviations in the position of the threaded holes of the end plate and further affect the sealing performance of the heat exchanger. At the same time, the lower supporting plate on the clamping assembly of the present invention is used to support the lower end surface of the outer side of the end plate, and is automatically retracted and extended when the lower supporting plate is moved to the drilling rig position, so that the lower supporting plate will not affect the drilling operation of the end plate.

[0019] 3. The upper pressure plate of the present invention adopts a structure that can be adjusted up and down and is suitable for end plates of different thicknesses. The height of the follower shell plate can be adjusted by rotating the height stud. At this time, the stop plate performs synchronous height adjustment, so that the stop plate can clamp the upper end of the end plates of different thicknesses.

[0020] Fourth, the present invention arranges the stop plate to be extended only when drilling is performed on the end plate, so that it will not hinder the placement and removal of the end plate. When the drilling rig moves downward to drill the end plate, the insertion ring drives the toggle block to move upward through the conduction rod. If the lower supporting plate is not in contact with the arc track block, the toggle block cooperates with the parallelogram groove to drive the stop plate to extend, and then the stop plate can be clamped on the upper side of the end plate. If the lower supporting plate is in contact with the arc track block, this means that the position of the toggle block corresponds to the position of the drilling rig. At this time, there is no need to extend the toggle block. When the toggle block moves upward, it will pass through the square give way groove, so that the stop plate will not extend.

[0021] 5. The present invention adopts a method of positioning the clamping plate to increase the stability and position accuracy of the clamping plate, thereby increasing the quality of drilling holes in the end plate. When the drilling rig drills holes in the end plate, the lifting member drives the insertion ring to move upward, so that the positioning column is inserted into the positioning hole at the corresponding position, thereby increasing the stability of the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0024] Figure 2 It is a front plan view of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention after a part of the drilling rig adjustment frame is removed.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention after the drilling rig adjustment frame and the drilling rig are removed.

[0027] Figure 5 yes Figure 4A partial enlarged view of point A in the middle.

[0028] Figure 6 It is a first cross-sectional view between the support plate, the clamping plate, the clamping assembly, the linkage adjustment assembly and the insertion ring of the present invention.

[0029] Figure 7 It is a second cross-sectional view between the support plate, the clamping plate, the clamping assembly, the linkage adjustment assembly and the insertion ring of the present invention.

[0030] Figure 8 It is a cross-sectional view of the sliding seat, the clamping arc plate, the lower bearing plate and the upper pressing plate of the present invention.

[0031] Fig. 9 It is a cross-sectional view of the support plate, the clamping support plate, the push column and the insertion ring of the present invention.

[0032] In the figure: 1, support plate; 11, transposition motor; 12, arc track block; 13, return protrusion; 2, drilling rig adjustment frame; 21, push column; 3, drilling rig; 4, clamping plate; 41, positioning socket; 5, clamping assembly; 51, sliding seat; 52, clamping arc plate; 521, placement groove; 522, toggle block; 523, transmission rod; 53, lower plate; 54, upper pressure plate; 541, follower shell plate; 542. shift plate; 543. height stud; 544. guide column; 545. parallelogram groove; 546. square give-way groove; 6. linkage adjustment assembly; 61. adjustment ring; 62. pull rod; 63. telescopic plate; 64. rotating plate; 65. adjustment stud; 66. top pressure matching plate; 55. return elastic member; 7. insertion ring; 71. positioning column; 72. isosceles trapezoidal block; 73. matching top extension block. DETAILED DESCRIPTION

[0033] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 and Figure 2, a double-station drilling rig for processing heat exchanger parts, comprising a support plate 1, a drilling rig adjustment frame 2 installed on the support plate 1, a drilling rig 3 installed on the lower side of the drilling rig adjustment frame 2, and a clamping plate 4 installed on the support plate 1 and located below the drilling rig 3, wherein a plurality of clamping components 5 are evenly installed on the clamping plate 4 around its center position, a transposition motor 11 is installed on the middle upper side surface of the support plate 1 through a motor seat, and the output shaft of the transposition motor 11 is connected to the middle lower side surface of the clamping plate 4, and two drilling rigs 3 are distributed on the left and right, and the two drilling rigs 3 are both slidably connected to the lower side of the drilling rig adjustment frame 2 on the left and right, and the two drilling rigs 3 are synchronously adjusted in position through an adjusting member. The present invention can drill bolt holes on the end plate of the heat exchanger, and the present invention can synchronously adjust the positions of the two drilling rigs 3, so that two bolt holes at symmetrical positions on the end plate are synchronously drilled, thereby increasing the processing efficiency of the end plate drilling, and through the above-mentioned drilling method, the end plate is in a state of uniform force during the drilling operation, so that the end plate will not be deflected in position, thereby increasing the stability of the end plate drilling.

[0035] Specifically, the end plate is first placed between the clamping components 5 of the clamping support plate 4, the position of the end plate is clamped and locked by the clamping components 5, and the center positions of the end plates of different sizes are made the same, thereby increasing the accuracy of drilling the threaded holes of the end plates, and then the drill rig 3 is controlled to move downward by the drill rig adjustment frame 2, so that the left and right end positions of the end plate are drilled, and then the transposition motor 11 is controlled to rotate, so that the required positions of the end plates are all drilled.

[0036] Exemplarily, the drill rig adjustment frame 2 can support the drill rig 3 and control the drill rig 3 to move downward, so that the drill rig 3 drills the end plate. The operation method of the above-mentioned drill rig adjustment frame 2 belongs to the prior art and will not be described in detail here.

[0037] See also Figure 1 , Figure 3-Figure 5 and Figure 8The clamping assembly 5 includes a sliding seat 51 slidably connected to the clamping support plate 4, a clamping arc plate 52 installed on the upper side of the sliding seat 51, and a lower support plate 53 slidably connected to the lower part of the clamping arc plate 52. The clamping arc plate 52 is provided with a plurality of elastic clamping layers evenly arranged along its arc structure on one side close to the center of the clamping support plate 4. An upper pressing plate 54 is connected above the lower support plate 53. One end of the upper pressing plate 54 close to the center of the clamping support plate 4 passes through the clamping arc plate 52. The lower support plate 53 is close to the clamping support plate. One end of the center position is an arc structure, and the other end of the lower support plate 53 is an L-shaped structure. The clamping arc plate 52 is provided with a placement groove 521 for accommodating the arc structure of the lower support plate 53 at one end thereof. The clamping assembly 5 can clamp and lock the end plates of different sizes by supporting the lower end of the outer side, clamping the upper end of the outer side, and clamping the outer side surface, thereby increasing the stability of the end plate and preventing the end plate from shaking during the drilling process, resulting in deviation of the position of the threaded hole of the end plate, thereby affecting the sealing performance of the heat exchanger.

[0038] Specifically, the position of the sliding seat 51 is first adjusted according to the size of the end plate, and then the end plate is placed on the lower supporting plate 53 on the multiple clamping assemblies 5, and then the clamping arc plate 52 is controlled to clamp the side of the end plate. At this time, the lower supporting plate 53 can support the lower side of the end plate, and the elastic clamping layer on the clamping arc plate 52 can stably clamp the side of the end plate. The upper pressure plate 54 can clamp the upper side of the end plate during drilling, thereby achieving all-round locking of the end plate.

[0039] See also Figure 1 , Figure 4 and Figure 5 The sliding seats 51 on the multiple clamping assemblies 5 are synchronously adjusted in position through the linkage adjustment assembly 6, thereby increasing the locking accuracy of the end plate. The linkage adjustment assembly 6 includes an adjustment ring 61 rotatably installed on the clamping plate 4 and located between the multiple sliding seats 51, and a pulling rod 62 hinged on the outside of the adjustment ring 61. The end of the pulling rod 62 away from the adjustment ring 61 is hinged to the side of the sliding seat 51 at the corresponding position. The linkage adjustment assembly 6 also includes a rotating adjustment member installed on the side of the adjustment ring 61. The rotating adjustment member can drive the adjustment ring 61 to rotate, and under the action of the pulling rod 62, the sliding seat 51 is synchronously driven to slide, so that the clamping arc plate 52 clamps the side of the end plate.

[0040] See also Figure 4In order to increase the stability of the clamping arc plate 52 on the end plate, the rotating adjustment member uses a threaded fastening method to position the position of the adjusting ring 61 after rotation, so that the adjusting ring 61 is in a stable state, and the adjusting ring 61 is prevented from rotating arbitrarily, which causes the clamping stability of the clamping arc plate 52 on the end plate to be reduced. Exemplarily, the rotating adjustment member includes a telescopic plate 63 installed on the side of the adjusting ring 61, a rotating plate 64 hinged at the telescopic end of the telescopic plate 63, and an adjusting stud 65 rotatably connected to the side of the rotating plate 64. The middle part of the adjusting stud 65 is connected to a press-fit plate 66 by threaded fitting. The press-fit plate 66 is installed on the clamping support plate 4. The front and rear position of the telescopic plate 63 can be adjusted by rotating the adjusting stud 65. Under the telescopic fitting of the telescopic plate 63 and the rotation fitting of the rotating plate 64, the telescopic plate 63 moves back and forth to drive the adjusting ring 61 to rotate.

[0041] See also Figure 2 , Figure 4 and Figure 5 Since the lower supporting plate 53 will affect the threaded drilling of the end plate when supporting the bottom of the end plate, the present invention sets a structure that can shrink the lower supporting plate 53 at the position of the drilling rig 3. For example, an arc track block 12 is distributed under each drilling rig 3, and the arc track block 12 is installed on the support plate 1 through a bracket. The middle part of the side of the arc track block 12 away from the center position of the clamping supporting plate 4 is integrally formed with an arc protrusion. When the L-shaped structure of the lower supporting plate 53 moves to the position of the arc track block 12, the lower supporting plate 53 moves to the side away from the center position of the clamping supporting plate 4 under the guidance of the arc protrusion, and then the arc structure of the lower supporting plate 53 shrinks into the placement groove 521, so that the lower supporting plate 53 will not affect the drilling operation of the end plate.

[0042] It should be noted that a return elastic member 55 is provided between the middle of the lower support plate 53 and the clamping arc plate 52, and when the lower support plate 53 is separated from the arc-shaped protrusion, the lower support plate 53 returns to the initial position under the action of the return elastic member 55; in addition, a return protrusion 13 is provided on one side of the arc-shaped track block 12 in accordance with the rotation direction of the clamping support plate 4, Figure 4 It can be seen that a bevel groove is provided on one side of the return protrusion 13 corresponding to the rotation direction of the clamping support plate 4. When the L-shaped structure of the lower support plate 53 is separated from the arc track block 12, the lower support plate 53 moves to the side close to the center position of the clamping support plate 4 under the guidance of the bevel groove on the return protrusion 13. When the lower support plate 53 contacts the middle position of the return protrusion 13, the lower support plate 53 can be restored to its initial position, thereby preventing the problem that the lower support plate 53 cannot be restored normally due to the large friction between the arc structure of the lower support plate 53 and the lower side surface of the end plate.

[0043] See also Figure 5 and Figure 6Since the thickness of the end plates of different sizes may have some deviations, the present invention is suitable for end plates of different thicknesses. The upper pressing plate 54 adopts the following structure that can be adjusted up and down. The upper pressing plate 54 includes a follower shell plate 541 with an open end near the center of the clamping plate 4, a stop plate 542 slidably connected to the end of the follower shell plate 541 near the center of the clamping plate 4, and a height stud 543 is connected to the end of the follower shell plate 541 away from the center of the clamping plate 4 by threaded engagement. The bottom of the height stud 543 is rotatably connected to the lower plate 53. On the upper side surface, guide pillars 544 are slidably connected on both sides of the follower shell plate 541, and the lower ends of the guide pillars 544 are installed on the sides of the lower supporting plate 53. Scale markings are provided on the guide pillars 544, and the height of the follower shell plate 541 can be adjusted by rotating the height screws 543. At this time, the shift plate 542 performs synchronous height adjustment, so that the shift plate 542 can clamp the upper ends of the end plates of different thicknesses. The guide pillars 544 can limit the follower shell plate 541 when it moves up and down, and accurately adjust the height of the follower shell plate 541 through the scale markings on the guide pillars 544.

[0044] See also Figure 6-Figure 8 Since the stop plate 542 will affect the placement, removal and drilling of the end plate when it is in the extended state, the present invention sets the stop plate 542 to be extended only when the end plate is drilled, and its structure is as follows: the upper and lower side walls of the follower shell plate 541 close to the center of the clamping support plate 4 are both provided with a through groove, the middle of the stop plate 542 is provided with a parallelogram groove 545 and a square giving groove 546, and a toggle block 522 is arranged below the stop plate 542, and the lower side of the toggle block 522 is installed There is a conduction rod 523, which extends to the inside of the clamping arc plate 52 and passes through the sliding seat 51 and the clamping plate 4 in sequence. The lower end of the conduction rod 523 is located below the clamping plate 4; the upper end of the toggle block 522 is a side-standing trapezoidal structure. When the lower plate 53 is not in contact with the arc track block 12, the position of the toggle block 522 corresponds to the position of the parallelogram groove 545. When the lower plate 53 is in contact with the arc track block 12, the position of the toggle block 522 corresponds to the position of the square give-way groove 546.

[0045] Specifically, when the drilling machine 3 moves downward to perform drilling operation on the end plate, the transmission rod 523 is controlled to move upward, and the transmission rod 523 moves upward to drive the toggle block 522 to move upward synchronously, such as Figure 7 As shown, at this time, if the lower bearing plate 53 is not in contact with the arc track block 12, the toggle block 522 cooperates with the parallelogram groove 545 to drive the stop plate 542 to extend, and then the stop plate 542 can be clamped on the upper side of the end plate, as shown in FIG. Figure 6As shown, if the lower support plate 53 contacts the arc track block 12, it means that the position of the toggle block 522 corresponds to the position of the drilling rig 3. At this time, there is no need to extend the toggle block 522. When the toggle block 522 moves upward, it will pass through the square yielding groove 546, so that the stop plate 542 will not extend.

[0046] See also Figure 2 , Figure 6 and Fig. 9 When the drilling rig 3 drills holes in different positions of the end plate, the transposition motor 11 needs to be rotated and adjusted. When the transposition motor 11 is used for a long time, a small deviation will occur in the drilling position of the end plate due to mechanical errors. At the same time, when the end plate is drilled, the transposition motor 11 will cause a small movement, thereby affecting the processing quality of the end plate. Therefore, the present invention adopts a method of positioning the clamping plate 4 to increase the stability and position accuracy of the clamping plate 4, thereby increasing the quality of the end plate drilling. An insertion ring 7 is arranged below the clamping plate 4 and on the outside of the transposition motor 11. The insertion ring 7 is installed on the support plate 1 through a spring rod. The upper side surface of the insertion ring 7 is symmetrically provided with positioning pins 71, and the lower side surface of the clamping plate 4 is symmetrically provided with positioning holes 41 corresponding to the positions of the positioning pins 71 along its center position. When the drilling rig 3 performs drilling operations on the end plate, the insertion ring 7 is controlled to move upward so that the positioning pins 71 are inserted into the positioning holes 41 at the corresponding positions, thereby increasing the stability of the clamping plate 4.

[0047] See also Figure 3 and Fig. 9 A pushing column 21 is installed on the lower side of the drilling rig adjustment frame 2, and a lifting piece is arranged between the lower part of the insertion ring 7 and the support plate 1. When the drilling rig 3 drills holes in the heat exchanger parts downward, the pushing column 21 drives the insertion ring 7 to move upward through the lifting piece, so that the positioning column 71 is inserted into the positioning socket 41 at the corresponding position. At the same time, the insertion ring 7 drives the transmission rod 523 to move upward and then drives the toggle block 522 to move upward synchronously, so that the toggle block 522 drives the shift plate 542 to extend from the follower shell plate 541 through the parallelogram groove 545. The lifting piece can drive the insertion ring 7 to move upward through the power of the downward movement of the drilling rig 3. The upward movement of the insertion ring 7 can locate the position of the clamping plate 4, and can also synchronously drive the transmission rod 523 to move upward, so that the shift plate 542 can extend out and be stuck on the upper side of the end plate.

[0048] Continue reading Figure 3 and Fig. 9The cam 72 is in the state of being moved upward by the push rod 21, and the push rod 21 is in the state of being moved upward by the push rod 21, so that the cam 72 is in the state of being moved upward by the push rod 21.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A double-station drilling rig for processing heat exchanger parts, comprising a support plate (1), a drilling rig adjustment frame (2) mounted on the support plate (1), a drilling rig (3) mounted on the lower side of the drilling rig adjustment frame (2), and a clamping support plate (4) mounted on the support plate (1) and located below the drilling rig (3), wherein a plurality of clamping assemblies (5) are evenly mounted on the clamping support plate (4) around its center position, and the lower side surface of the middle part of the clamping support plate (4) is mounted on the middle part of the support plate (1) through a transposition motor (11), characterized in that: There are two drilling rigs (3) distributed on the left and right sides, and the two drilling rigs (3) are both slidably connected to the lower side of the drilling rig adjustment frame (2) on the left and right sides, and the two drilling rigs (3) are synchronously adjusted in position through an adjustment member; The clamping assembly (5) comprises a sliding seat (51) slidably connected to the clamping support plate (4), a clamping arc plate (52) installed on the upper side of the sliding seat (51), and a lower support plate (53) slidably connected to the lower part of the clamping arc plate (52); an upper pressing plate (54) is connected above the lower support plate (53); one end of the upper pressing plate (54) close to the center of the clamping support plate (4) passes through the clamping arc plate (52); one end of the lower support plate (53) close to the center of the clamping support plate (4) is an arc structure; the other end of the lower support plate (53) is an L-shaped structure; and one end of the clamping arc plate (52) corresponding to the arc structure of the lower support plate (53) is provided with a placement groove (521) for accommodating the arc structure; An arc track block (12) is distributed below each of the drilling rigs (3). The arc track block (12) is mounted on the support plate (1) via a bracket. An arc protrusion is integrally formed in the middle of the side of the arc track block (12) away from the center position of the clamping support plate (4). When the L-shaped structure of the lower support plate (53) moves to the position of the arc track block (12), the lower support plate (53) moves to the side away from the center position of the clamping support plate (4) under the guidance of the arc protrusion.

2. A double-station drilling rig for processing heat exchanger parts according to claim 1, characterized in that: The sliding seats (51) on the multiple clamping assemblies (5) are synchronously adjusted in position through a linkage adjustment assembly (6), the linkage adjustment assembly (6) comprising an adjustment ring (61) rotatably mounted on the clamping support plate (4) and located between the multiple sliding seats (51) composition structure, a pulling rod (62) hinged on the outside of the adjustment ring (61), one end of the pulling rod (62) away from the adjustment ring (61) is hinged to the side of the sliding seat (51) at the corresponding position, and the linkage adjustment assembly (6) further comprises a rotation adjustment member mounted on the side of the adjustment ring (61).

3. A double-station drilling rig for processing heat exchanger parts according to claim 2, characterized in that: The rotary adjustment member comprises a telescopic plate (63) mounted on the side of the adjustment ring (61), a rotating plate (64) hinged on the telescopic end of the telescopic plate (63), and an adjustment stud (65) rotatably connected to the side of the rotating plate (64); a middle portion of the adjustment stud (65) is connected to a press-fit plate (66) by means of threaded engagement; and the press-fit plate (66) is mounted on the clamping support plate (4).

4. A double-station drilling rig for processing heat exchanger parts according to claim 1, characterized in that: A return elastic member (55) is arranged between the middle part of the lower supporting plate (53) and the clamping arc plate (52); the upper pressure plate (54) comprises a follower shell plate (541) whose end close to the center position of the clamping supporting plate (4) is open, and a stop plate (542) slidably connected to the end of the follower shell plate (541) close to the center position of the clamping supporting plate (4); the end of the follower shell plate (541) away from the center position of the clamping supporting plate (4) is connected to a height stud (543) by threaded engagement; the bottom of the height stud (543) is rotatably connected to the upper side surface of the lower supporting plate (53); guide pillars (544) are slidably connected to both sides of the follower shell plate (541); and the lower ends of the guide pillars (544) are installed on the side surfaces of the lower supporting plate (53).

5. A double-station drilling rig for processing heat exchanger parts according to claim 4, characterized in that: A plurality of elastic clamping layers evenly arranged along the arc-shaped structure of the clamping arc plate (52) are provided on one side close to the center of the clamping support plate (4), and a scale mark is provided on the guide column (544).

6. A double-station drilling rig for processing heat exchanger parts according to claim 4, characterized in that: The upper and lower side walls of the follower shell plate (541) close to the center of the clamping support plate (4) are both provided with penetration grooves, the middle of the shift plate (542) is provided with a parallelogram groove (545) and a square yield groove (546), a toggle block (522) is arranged below the shift plate (542), a conduction rod (523) is installed on the lower side of the toggle block (522), the conduction rod (523) extends to the inside of the clamping arc plate (52), and passes through the sliding seat (51) and the clamping support plate (4) in sequence, and the lower end of the conduction rod (523) is located below the clamping support plate (4).

7. A double-station drilling rig for processing heat exchanger parts according to claim 6, characterized in that: The upper end of the toggle block (522) is a side-standing trapezoidal structure. When the lower support plate (53) is not in contact with the arc track block (12), the position of the toggle block (522) corresponds to the position of the parallelogram groove (545). When the lower support plate (53) is in contact with the arc track block (12), the position of the toggle block (522) corresponds to the position of the square clearance groove (546).

8. A double-station drilling rig for processing heat exchanger parts according to claim 6, characterized in that: An insertion ring (7) is arranged below the clamping support plate (4) and outside the transposition motor (11); the insertion ring (7) is mounted on the support plate (1) via a spring rod; positioning pins (71) are symmetrically arranged on the upper side of the insertion ring (7); and positioning holes (41) corresponding to the positions of the positioning pins (71) are symmetrically arranged along the center of the lower side of the clamping support plate (4).

9. A double-station drilling rig for processing heat exchanger parts according to claim 8, characterized in that: A pushing column (21) is installed on the lower side of the drilling rig adjustment frame (2), and a lifting member is arranged between the lower part of the insertion ring (7) and the support plate (1). The lifting member is used when the drilling rig (3) drills holes in the heat exchanger parts downward. The pushing column (21) drives the insertion ring (7) to move upward through the lifting member, so that the positioning column (71) is inserted into the positioning hole (41) at the corresponding position. At the same time, the insertion ring (7) drives the conduction rod (523) to move upward and then drives the toggle block (522) to move upward synchronously, so that the toggle block (522) drives the shift plate (542) to extend from the follower shell plate (541) through the parallelogram groove (545).

10. A double-station drilling rig for processing heat exchanger parts according to claim 9, characterized in that: The lifting member comprises an isosceles trapezoidal block (72) slidably connected to the support plate (1), and a matching extension block (73) installed on the lower side of the clamping support plate (4) and located on the side of the isosceles trapezoidal block (72) close to the center position of the clamping support plate (4). The matching extension block (73) and the push column (21) have inclined surfaces corresponding to the isosceles trapezoidal block (72) that are matched with the inclined surfaces. A return spring is provided at the position where the isosceles trapezoidal block (72) slides on the support plate (1).

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