Assembly equipment for plunger pump

Abstract

The present invention provides an assembly device for a plunger pump, which relates to the technical field of plunger pump assembly, and includes: a bracket; the bracket is connected to a first rotation source driving mechanism, the bracket is rotatably connected to a support shell for receiving a cylinder body, the support shell can rotate under the drive of the first rotation source, the support shell is fixedly connected to a positioning tube for positioning the cylinder body, a suction pipe is slidably connected in the positioning tube, a vent hole is provided on the side wall of the suction pipe, and the support shell is fixedly connected to a first linear driver; a support ring is fixedly arranged above the support shell, a plurality of fastening oil cylinders are fixedly connected to the side wall of the support ring along the circumferential direction, the driving shaft of the fastening oil cylinder is fixedly connected to a connecting block, the connecting block is fixedly connected to a positioning block, the positioning block is provided with a positioning groove, and the connecting block is provided with a suction hole. The present invention has the function of facilitating the assembly of the plunger into the cylinder body, and preventing the plunger from being separated from the cylinder body when the plunger and the cylinder body are installed in the outer shell to cause an operating accident.

Description

Technical Field

[0001] The invention relates to the technical field of plunger pump assembly, and in particular to an assembly device for a plunger pump. Background Art

[0002] The axial piston pump is an inclined plate type axial piston pump that uses an oil distribution plate to distribute oil, and the cylinder body rotates and the variable head changes its variable. The pump adopts the optimal oil film thickness design of hydraulic static balance, so that the cylinder body and the oil distribution plate, the sliding shoe and the variable head operate under pure liquid friction. The plunger pump includes a plunger, a front cover, a cylinder body and an outer shell. After the various parts of the axial piston pump are processed, they need to be assembled. When assembling the existing axial piston pump, the plunger needs to be installed on the front cover first, and then multiple plungers are inserted into the plunger cavity of the cylinder body at the same time, and the outer shell is placed on a horizontal plane, and then the assembled plunger and cylinder body are turned 180° and placed in the outer shell.

[0003] For example, the Chinese patent with the authorization announcement number CN117754267B and the name of an axial piston pump assembly equipment, when the front cover and the plunger are clamped and fixed, the regular polygonal cover is driven downward by the lifting mechanism, and the regular polygonal cover drives the clamping mechanism to move downward. At this time, the extrusion transmission block in the clamping mechanism first contacts the front cover on the limit bracket, and the L-shaped clamping blocks move away from each other and open. When the regular polygonal cover drives the clamping mechanism to move downward, the L-shaped clamping block is stuck on the side of the front cover, and at the same time, the positioning plate drives the soft magnet to be stuck on the side of the plunger. The plunger is adsorbed and fixed in the fan-shaped positioning groove of the positioning plate by the soft magnet, and the front cover is firmly clamped and fixed by the cooperation of multiple L-shaped clamping blocks. The regular polygonal cover moves downward to push the front cover downward, and the front cover drives the plunger to insert into the plunger cavity of the cylinder body, completing the assembly between the plunger and the cylinder body.

[0004] For the above related technologies, refer to Figure 1 Since the front cover and the plunger are hinged, the position of the plunger is not locked. Therefore, when the plunger moves downward to be assembled into the mounting groove in the cylinder body, the plunger shakes and interferes with the side wall of the mounting groove, and the plunger tilts in the mounting groove, which causes a jam in the mounting groove. In addition, since there are multiple plungers arranged along the circumference of the front cover, the operator needs to adjust the position of the plunger one by one, which is complicated and not conducive to installing the plunger into the cylinder body. In addition, since the plunger and the cylinder body are slidably connected, when the plunger and the cylinder body are rotated 180° to be assembled into the outer shell, the plunger is easy to detach from the cylinder body, and the plunger lacks the limit of the cylinder body, which is not conducive to assembling the plunger and the cylinder body into the outer shell. Summary of the invention

[0005] In view of this, the present invention provides an assembly device for a plunger pump, aiming to solve the problem that the plunger will get stuck in the installation groove when it tilts in the installation groove, and the plunger is easy to separate from the cylinder body, which is not conducive to assembling the plunger and the cylinder body into the outer shell.

[0006] The cam is connected with a first rotating shaft and a second rotating shaft, and the cam is connected with a first linear actuator for driving the cam to slide. The cam is connected with a first rotating shaft and a second rotating shaft is connected with a first linear actuator for driving the cam to slide. The cam is connected with a first rotating shaft and a second rotating shaft is connected with a first linear actuator for driving the cam to slide. The cam is connected with a first rotating shaft and a second rotating shaft is connected with a first linear actuator for driving the cam to slide. The cam is connected with a first rotating shaft and a second rotating shaft is connected with a first linear actuator for driving the cam to slide.

[0007] By adopting the above technical scheme, on the one hand, the exhaust pipe can cooperate with the negative pressure airflow in the exhaust hole through the positioning surface, thereby increasing the position accuracy of the plunger relative to the cylinder body, which is beneficial to assembling the plunger into the cylinder body. On the other hand, the exhaust pipe introduces negative pressure airflow into the mounting groove, so that when the plunger and the cylinder body are flipped 180°, the plunger is continuously adsorbed in the cylinder body, and the cylinder body is fitted to the inner bottom surface of the support shell, preventing the plunger from detaching from the cylinder body when the plunger and the cylinder body are installed in the outer shell, causing an operating accident, so that the assembly of the plunger and the cylinder body can be carried out in an orderly manner.

[0008] Optionally, the driving mechanism includes a transmission block fixedly connected to the first rotation source, the transmission block is vertically slidably connected to the bracket, the bracket is fixedly connected to the second rotation source, the driving shaft of the second rotation source is fixedly connected to a transmission screw, and the transmission block is threadedly connected to the transmission screw.

[0009] Optionally, all the positioning blocks are connected in series with an air supply pipe, and the air supply pipe is communicated with the interior of the air exhaust hole.

[0010] By adopting the above technical solution, an external fan is used to introduce negative pressure air flow into the air supply pipe, and the negative pressure air flow enters the fixed slot through the exhaust hole.

[0011] Optionally, all the fastening cylinders are connected in series with an oil pipe, the bracket is fixedly connected with a transmission cylinder, an oil inlet pipe is connected between the oil pipe and the transmission cylinder, and the upward movement of the transmission block can push the drive shaft of the transmission cylinder to move.

[0012] By adopting the above technical solution, the travel of the supporting shell to move the cylinder body upward pushes the drive shaft of the transmission cylinder to move, so that the plunger moves into the cylinder body and the positioning block can loosen the plunger, thereby improving the efficiency of assembling the plunger into the cylinder body.

[0013] Optionally, a return spring is sleeved on the driving shaft of the transmission oil cylinder, and the return spring is used to push the driving shaft of the transmission oil cylinder to extend out of the transmission oil cylinder.

[0014] Optionally, the outer shell is placed at the lower end of the bracket, and the bracket is provided with a loading mechanism for moving the outer shell to just below the cylinder body.

[0015] Optionally, the feeding mechanism includes a third rotation source fixedly mounted on the lower end of the bracket, the driving shaft of the third rotation source is fixedly connected to a connecting screw, the connecting screw is threadedly connected to a feeding shell for placing an outer shell, and the feeding shell is slidably connected to the bracket.

[0016] By adopting the above technical solution, the third rotation source drives the loading shell to move to the bottom of the supporting shell through the connecting screw, thereby realizing the loading function of the outer shell.

[0017] Optionally, the inner side walls of the support shell, the support ring and the loading shell are all provided with limited chamfers.

[0018] By adopting the above technical solution, the operator manually places the cylinder body into the supporting shell, the plunger into the supporting ring, and the outer shell into the loading shell. The limiting guide abuts the supporting shell, the plunger and the outer shell, so that the supporting shell, the plunger and the outer shell are centered, which is conducive to the loading and installation of the supporting shell, the plunger and the outer shell.

[0019] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. On the one hand, the exhaust pipe can cooperate with the negative pressure airflow in the exhaust hole through the positioning surface to increase the position accuracy of the plunger relative to the cylinder body, which is conducive to assembling the plunger into the cylinder body. On the other hand, the exhaust pipe introduces negative pressure airflow into the installation groove, so that when the plunger and the cylinder body are turned 180°, the plunger is continuously adsorbed in the cylinder body, and the cylinder body is fitted to the inner bottom surface of the supporting shell, preventing the plunger from detaching from the cylinder body when the plunger and the cylinder body are installed in the outer shell, causing a working accident, so that the assembly of the plunger and the cylinder body can be carried out in an orderly manner.

[0021] 2. The travel of the supporting shell to move the cylinder upwards is used to push the drive shaft of the transmission oil cylinder to move, so that the plunger moves into the cylinder while the positioning block can loosen the plunger, thereby improving the efficiency of assembling the plunger into the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded view of the plunger, cylinder body and outer shell of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a support shell and a support ring according to an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the internal structure of the supporting housing according to an embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of a support ring and a positioning block according to an embodiment of the present invention;

[0027] Figure 6 A cross-sectional view of the internal structure of a support ring according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a connecting block and a positioning block according to an embodiment of the present invention;

[0029] Figure 8 It is a structural schematic diagram of a feeding mechanism according to an embodiment of the present invention.

[0030] Explanation of the accompanying drawings: 1. bracket; 2. first rotation source; 21. driving gear; 22. transmission gear; 3. driving mechanism; 31. transmission block; 311. air supply pipe; 32. second rotation source; 33. transmission screw; 4. supporting shell; 41. positioning tube; 42. exhaust pipe; 421. air vent; 422. positioning surface; 43. first linear actuator; 431. connecting plate; 5. cylinder body; 51. plunger; 511. front cover; 52. outer shell; 53. mounting groove; 6. supporting ring; 61. fastening cylinder; 611. oil supply pipe; 62. connecting block; 621. air supply hole; 63. positioning block; 631. positioning groove; 7. transmission cylinder; 71. oil inlet pipe; 72. reset spring; 8. feeding mechanism; 81. third rotation source; 82. connecting screw; 83. feeding shell; 9. limit chamfer. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 8 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] This embodiment provides an assembly device for a plunger pump, referring to Figure 2 , Figure 3 and Figure 4An assembly device for a plunger pump includes a bracket 1, a first rotation source 2, a driving mechanism 3, a driving gear 21, a transmission gear 22, a support shell 4, a positioning tube 41, an exhaust tube 42, a first linear drive 43, a support ring 6, a fastening cylinder 61, a connecting block 62 and a positioning block 63.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The first rotation source 2, the driving mechanism 3 and the supporting shell 4 are arranged on the side wall of the bracket 1. The driving mechanism 3 is used to drive the first rotation source 2 to reciprocate in the vertical direction. The driving gear 21 is fixedly sleeved on the driving shaft of the first rotation source 2. The transmission gear 22 is meshed with the driving gear 21, and the transmission gear 22 is fixedly connected to the supporting shell 4. The first rotation source 2 drives the supporting shell 4 to flip through the driving gear 21 and the transmission gear 22 in turn, and the supporting shell 4 flips 180° each time.

[0034] Reference Figure 3 and Figure 4 The positioning tube 41 is fixedly connected to the inner bottom surface of the support shell 4. There are eight positioning tubes 41 arranged along the circumference of the support shell 4. The positioning tube 41 cooperates with the mounting groove 53 of the cylinder body 5 to achieve the positioning of the cylinder body 5. The exhaust pipe 42 is slidably arranged inside the positioning tube 41. The side wall of the exhaust pipe 42 is provided with an air vent 421. The upper surface of the exhaust pipe 42 is a positioning surface 422. The positioning surface 422 can abut against the lower bottom surface of the plunger 51. The first linear actuator 43 is fixedly connected to the lower bottom surface of the support shell 4. A connecting plate 431 is fixedly connected between the driving shaft of the first linear actuator 43 and the exhaust pipe 42.

[0035] Reference Figure 5 , Figure 6 and Figure 7 , the support ring 6 is fixedly connected to the top of the bracket 1, and the support ring 6 is arranged above the support shell 4. There are eight fastening cylinders 61, connecting blocks 62 and positioning blocks 63 arranged along the circumference of the support ring 6. The connecting block 62 is fixedly connected to the driving shaft of the fastening cylinder 61, and the connecting block 62 can slide along the radial direction of the support ring 6. The positioning block 63 is fixedly connected to the end of the connecting block 62 away from the fastening cylinder 61. Each positioning block 63 is provided with a positioning groove 631 for receiving the plunger 51, and the connecting block 62 is provided with an exhaust hole 621 that can be connected to the positioning groove 631. All positioning blocks 63 are connected in series with the air supply pipe 311, and the air supply pipe 311 is connected to the inside of the exhaust hole 621. The negative pressure airflow is introduced into the air supply pipe 311 by an external fan, and the negative pressure airflow enters the positioning groove 631 through the exhaust hole 621.

[0036] Reference Figure 5 , Figure 6 and Figure 7Before the plunger 51 is installed into the cylinder body 5, the outer shell 52 is placed directly below the support shell 4. The eight cylinder bodies 5 are hinged together on a front cover 511, and the plunger 51 is arranged along the circumference of the front cover 511. The operator puts the plunger 51 into the positioning groove 631, and the drive shaft of the fastening oil cylinder 61 drives the positioning block 63 to move toward the central axis of the support ring 6 through the connecting block 62. The front cover 511 abuts against the upper surface of the positioning block 63, so that the plunger 51 is stuck in the positioning groove 631. The negative pressure airflow is introduced into the air exhaust hole 621 by an external fan. The negative pressure airflow enters the positioning groove 631 and acts on the outer side of the plunger 51, so that the plunger 51 has a tendency to flip toward the outside of the front cover 511, so that the outer side of the plunger 51 is closely attached to the inner side of the positioning groove 631.

[0037] Reference Figure 3 and Figure 4 , the driving mechanism 3 drives the supporting housing 4 to move downward through the first rotation source 2, the driving gear 21 and the transmission gear 22, the operator puts the cylinder 5 into the supporting housing 4, and at the same time makes the positioning tube 41 enter the mounting groove 53 of the cylinder 5, so as to position the cylinder 5, and the air extraction tube 42 and the positioning tube 41 move synchronously into the mounting groove 53. The first linear actuator 43 drives the air extraction tube 42 to move upward through the connecting plate 431, so that the positioning surface 422 moves out of the mounting groove 53. The driving mechanism 3 moves the supporting housing 4 upward, and the supporting housing 4 drives the cylinder 5 and the air extraction tube 42 to move, so that the positioning surface 422 abuts against the lower bottom surface of the plunger 51. The negative pressure airflow has an adsorption effect on the plunger 51. At the same time, the positioning surface 422 fits against the lower bottom surface of the cylinder body 5 to limit the tendency of the plunger 51 to flip toward the outside of the front cover 511, thereby increasing the coaxiality of the plunger 51 and the exhaust pipe 42, and then increasing the coaxiality of the plunger 51 and the mounting groove 53. The negative pressure airflow cooperates with the positioning surface 422 to increase the position accuracy of the plunger 51 relative to the cylinder body 5.

[0038] The driving mechanism 3 continues to drive the cylinder body 5 to move upward through the supporting shell 4, and at the same time, the first linear actuator 43 drives the exhaust pipe 42 to move into the cylinder body 5 through the connecting plate 431, so that the positioning surface 422 continues to abut against the lower bottom surface of the plunger 51. The cylinder body 5 moves upward to allow the plunger 51 to enter the mounting groove 53. The fastening oil cylinder 61 drives the positioning block 63 to move to the outside of the supporting ring 6 through the connecting block 62, so that the positioning block 63 is separated from the plunger 51. Negative pressure airflow is introduced into the exhaust pipe 42, and the negative pressure airflow enters the mounting groove 53 through the vent 421 to act on the bottom surface of the plunger 51, and the plunger 51 is adsorbed to the inside of the mounting groove 53. The first rotation source 2 drives the supporting shell 4 to flip 180° through the driving gear 21 and the transmission gear 22. During this process, negative pressure airflow is continuously introduced into the mounting groove 53, so that the plunger 51 is adsorbed to the inside of the mounting groove 53, and the cylinder body 5 is adsorbed to the inner bottom surface of the supporting shell 4. After the flipping is completed, the driving mechanism 3 drives the cylinder body 5 to move downward through the supporting shell 4, so that the plunger 51 and the cylinder body 5 enter the outer shell 52, disconnecting the negative pressure airflow in the exhaust pipe 42, and making the cylinder body 5 and the plunger 51 detach from the supporting shell 4, thereby assembling the cylinder body 5 and the plunger 51 into the outer shell 52.

[0039] On the one hand, the exhaust pipe 42 can cooperate with the negative pressure airflow in the exhaust hole 621 through the positioning surface 422 to increase the position accuracy of the plunger 51 relative to the cylinder body 5, which is beneficial to assemble the plunger 51 into the cylinder body 5. On the other hand, the exhaust pipe 42 introduces negative pressure airflow into the mounting groove 53, so that when the plunger 51 and the cylinder body 5 are flipped 180°, the plunger 51 is continuously adsorbed in the cylinder body 5, and the cylinder body 5 is attached to the inner bottom surface of the support shell 4, preventing the plunger 51 from detaching from the cylinder body 5 when the plunger 51 and the cylinder body 5 are installed in the outer shell 52, causing an operating accident, so that the assembly of the plunger 51 and the cylinder body 5 can be carried out in an orderly manner.

[0040] Reference Figure 3 The driving mechanism 3 includes a transmission block 31, a second rotation source 32 and a transmission screw 33. The transmission block 31 is vertically slidably connected to the bracket 1, and the first rotation source 2 is fixedly connected to the transmission block 31, and the transmission gear 22 is rotationally connected to the transmission block 31. The second rotation source 32 is fixedly connected to the lower end of the bracket 1, the transmission screw 33 is fixedly connected to the driving shaft of the second rotation source 32, and the transmission screw 33 is threadedly connected to the transmission block 31. The transmission screw 33 and the transmission block 31 form a screw slider mechanism, and the second rotation source 32 drives the transmission screw 33 to rotate, so that the transmission block 31 can reciprocate in the vertical direction.

[0041] Reference Figure 3All the fastening oil cylinders 61 are connected in series with an oil delivery pipe 611, the bracket 1 is fixedly connected with the transmission oil cylinder 7, an oil inlet pipe 71 is connected between the oil delivery pipe 611 and the transmission oil cylinder 7, and the transmission block 31 moves upward to push the driving shaft of the transmission oil cylinder 7 to move. A return spring 72 is sleeved on the driving shaft of the transmission oil cylinder 7, and the return spring 72 is used to push the driving shaft of the transmission oil cylinder 7 out of the transmission oil cylinder 7.

[0042] When the support shell 4 drives the cylinder body 5 to move upward and the plunger 51 enters the installation groove 53, the transmission block 31 moves synchronously with the support shell 4 to push the driving shaft of the transmission cylinder 7, so that the driving shaft of the transmission cylinder 7 moves toward the inside of the transmission cylinder 7, squeezes the hydraulic oil inside the transmission cylinder 7, and makes the hydraulic oil enter the fastening cylinder 61 through the oil pipe 611, and then makes the driving shaft of the fastening cylinder 61 move to the outside of the fastening cylinder 61, and the driving shaft of the fastening cylinder 61 drives the positioning block 63 to move to the outside of the support ring 6 through the connecting block 62, so that the positioning block 63 releases the plunger 51.

[0043] The travel of the supporting shell 4 to move the cylinder body 5 upward pushes the driving shaft of the transmission oil cylinder 7 to move, so that the plunger 51 moves into the cylinder body 5, and the positioning block 63 can loosen the plunger 51, thereby improving the efficiency of assembling the plunger 51 into the cylinder body 5.

[0044] Reference Figure 2 and Figure 8 , the outer shell 52 is placed at the lower end of the bracket 1, and the bracket 1 is provided with a feeding mechanism 8 for moving the outer shell 52 to the bottom of the cylinder 5. The feeding mechanism 8 includes a third rotation source 81, a connecting screw 82 and a feeding shell 83. The third rotation source 81 is fixedly connected to the lower end of the bracket 1, the connecting screw 82 is fixedly connected to the driving shaft of the third rotation source 81, and the connecting screw 82 is threadedly connected to the feeding shell 83, and the feeding shell 83 is horizontally slidably connected to the bracket 1. The connecting screw 82 and the feeding shell 83 form a screw slider mechanism, and the third rotation source 81 drives the feeding shell 83 to move to the bottom of the support shell 4 through the connecting screw 82, thereby realizing the feeding function of the outer shell 52.

[0045] Reference Figure 4 , Figure 7 and Figure 8 The inner sidewalls of the support housing 4, the support ring 6 and the loading housing 83 are all provided with limited chamfers 9. The operator manually puts the cylinder body 5 into the support housing 4, the plunger 51 into the support ring 6, and the outer housing 52 into the loading housing 83. The limited chamfers 9 abut against the support housing 4, the plunger 51 and the outer housing 52, so that the support housing 4, the plunger 51 and the outer housing 52 are centered, which is conducive to the loading and installation of the support housing 4, the plunger 51 and the outer housing 52.

[0046] The implementation principle of the assembly equipment for the plunger pump of the embodiment of the present invention is as follows: the outer shell 52 is placed directly below the support shell 4, the operator puts the cylinder body 5 into the positioning groove 631, and the drive shaft of the fastening oil cylinder 61 drives the positioning block 63 to move toward the central axis of the support ring 6 through the connecting block 62, so that the plunger 51 is stuck in the positioning groove 631. The negative pressure airflow is introduced into the exhaust hole 621 by an external fan, so that the outer side surface of the plunger 51 is pressed against the inner side surface of the positioning groove 631.

[0047] The driving mechanism 3 drives the supporting shell 4 to move downward, and the operator places the cylinder body 5 into the supporting shell 4, and at the same time, the positioning tube 41 positions the cylinder body 5, and the first linear actuator 43 drives the exhaust pipe 42 to move upward, so that the positioning surface 422 abuts against the lower bottom surface of the plunger 51. The negative pressure airflow has an adsorption effect on the plunger 51, and at the same time, the positioning surface 422 abuts against the lower bottom surface of the cylinder body 5 to limit the tendency of the plunger 51 to flip toward the outside of the front cover 511.

[0048] The driving mechanism 3 continues to drive the cylinder body 5 to move upward, while the first linear actuator 43 drives the exhaust pipe 42 to move so that the positioning surface 422 continues to abut against the lower bottom surface of the plunger 51. The fastening cylinder 61 drives the positioning block 63 to disengage from the plunger 51 through the positioning block 63. Negative pressure airflow is introduced into the exhaust pipe 42 to adsorb the plunger 51 to the inside of the mounting groove 53. The support shell 4 flips 180°, and during this process, the negative pressure airflow adsorbs the cylinder body 5 to the inner bottom surface of the support shell 4. After the flipping is completed, the driving mechanism 3 drives the cylinder body 5 to move downward through the support shell 4, so that the plunger 51 and the cylinder body 5 enter the outer shell 52, disconnecting the negative pressure airflow in the exhaust pipe 42, thereby assembling the cylinder body 5 and the plunger 51 into the outer shell 52.

[0049] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An assembly device for a plunger pump, comprising a bracket, characterized in that: The bracket is connected to a first rotation source and a driving mechanism for driving the first rotation source to move up and down, the bracket is rotatably connected to a supporting shell for receiving the cylinder body, the supporting shell can rotate under the drive of the first rotation source, the supporting shell is fixedly connected to a positioning tube for positioning the cylinder body, an exhaust pipe is slidably connected to the positioning tube, a vent hole is provided in the side wall of the exhaust pipe, the upper surface of the exhaust pipe can abut against the lower bottom surface of the plunger, and the supporting shell is fixedly connected to a first linear actuator for driving the exhaust pipe to slide; A support ring is fixedly arranged above the support shell, and a plurality of fastening cylinders are fixedly connected to the side wall of the support ring along the circumferential direction, and a connecting block is fixedly connected to the driving shaft of the fastening cylinder, and a positioning block is fixedly connected to the connecting block, and the positioning block is provided with a positioning groove for receiving a plunger, and the connecting block is provided with an air extraction hole that can be communicated with the positioning groove; The driving mechanism comprises a transmission block fixedly connected to the first rotation source, the transmission block is vertically slidably connected to the bracket, the bracket is fixedly connected to the second rotation source, the driving shaft of the second rotation source is fixedly connected to the transmission screw, and the transmission block is threadedly connected to the transmission screw; All the fastening oil cylinders are connected in series with oil pipes, the bracket is fixedly connected with the transmission oil cylinder, an oil inlet pipe is connected between the oil pipe and the transmission oil cylinder, and the transmission block moves upward to push the drive shaft of the transmission oil cylinder to move; A return spring is sleeved on the driving shaft of the transmission oil cylinder, and the return spring is used to push the driving shaft of the transmission oil cylinder to extend out of the transmission oil cylinder.

2. An assembly device for a plunger pump according to claim 1, characterized in that: All the positioning blocks are connected in series with air supply pipes, and the air supply pipes are communicated with the inside of the air extraction hole.

3. The assembly equipment for a plunger pump according to claim 1, characterized in that: The outer shell is placed at the lower end of the bracket, and the bracket is provided with a loading mechanism for moving the outer shell to just below the cylinder body.

4. An assembly device for a plunger pump according to claim 3, characterized in that: The feeding mechanism includes a third rotation source fixedly mounted on the lower end of the bracket, a driving shaft of the third rotation source is fixedly connected to a connecting screw, the connecting screw is threadedly connected to a feeding shell for placing an outer shell, and the feeding shell is slidably connected to the bracket.

5. An assembly device for a plunger pump according to claim 4, characterized in that: The inner side walls of the support shell, the support ring and the feeding shell are all provided with limited chamfers.

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