Dismounting device for pump shaft

Abstract

The utility model relates to the technical field of dismounting tools, in particular to a pump shaft dismounting device which comprises a bottom plate, a dismounting mechanism is arranged at the top of the bottom plate and extends to the bottom of the bottom plate, a rotating mechanism is arranged on the dismounting mechanism, four telescopic rods are connected to the bottom of the bottom plate respectively, and the rotating mechanism is connected with a rotating shaft. The bottoms of the four telescopic rods are connected with a containing plate, a motor is placed on the top of the containing plate, then the dismounting mechanism is connected with the bottom plate, a shaft sleeve on a motor shaft is fixed through the dismounting mechanism, the dismounting mechanism is locked and inserted into two positioning holes, and then a rotating mechanism is rotated; the rotating mechanism can drive the dismounting mechanism to ascend so as to pull the shaft sleeve to be separated from the motor shaft, so that dismounting of the shaft sleeve is completed, workers can easily and conveniently take out the shaft sleeve, the process is time-saving and labor-saving, the shaft sleeve and the pump shaft cannot be damaged, the dismounting efficiency of the shaft sleeve is improved, and the working efficiency is improved. And the labor intensity of workers is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tools, specifically a disassembly device for a pump shaft. Background Technology

[0002] Centrifugal pumps are commonly used equipment in industrial production. For example, centrifugal pumps are widely used in oilfield production. The shaft sleeve is an important component of the centrifugal pump. During operation, it is subjected to the wear of the packing and the corrosion of the medium. Its service life is relatively short, and it needs to be replaced and repaired frequently. Since the shaft sleeve is fixed to the pump shaft by a tight fit, special tools are required to disassemble the shaft sleeve.

[0003] Currently, pry bars and sledgehammers are commonly used to disassemble centrifugal pump shaft sleeves. During operation, one end of the pry bar is placed against the bottom of the shaft sleeve. The centrifugal pump shaft and motor shaft are tightly fitted. Since there is no clearance at the bottom of the shaft sleeve for prying, and the shaft sleeve will rust over time, the conventional pry bar disassembly method cannot be used to disassemble it. Therefore, we propose a pump shaft disassembly device. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned in the background section, the present invention provides a pump shaft disassembly device.

[0005] This utility model overcomes the above technical problems by adopting the following technical solution:

[0006] A pump shaft disassembly device includes: a base plate, a disassembly mechanism on the top of the base plate extending to the bottom of the base plate, a rotating mechanism on the disassembly mechanism, four telescopic rods connected to the bottom of the base plate, the four telescopic rods being placed at the four corners below the base plate, a placement plate connected to the bottom of the four telescopic rods, a motor on the placement plate, a through hole on the base plate, a bushing on the output shaft of the motor extending through the through hole to the top of the base plate, the output shaft of the motor extending to the top of the base plate, a bushing connected to the output shaft of the motor, and two positioning holes on the outer surface of the bushing, the rotating mechanism driving the disassembly mechanism to move up and down and remove the bushing, two transverse grooves on the top of the placement plate, a fixing mechanism between the two transverse grooves extending to the top and one side of the base plate, the fixing mechanism fixing motors of different specifications, and a locking mechanism on one side of the placement plate locking the fixing mechanism.

[0007] As a further embodiment of this utility model: the dismantling mechanism includes two symmetrically arranged support frames, two connecting blocks, two first nuts, and a clamping mechanism. One end of each support frame is connected to a connecting block, and the other end is provided with a threaded structure. The base plate is provided with a threaded structure. The support frame passes through the base plate and is threadedly connected to the base plate. The first nuts are threadedly connected to the support frame below the base plate. The two connecting blocks are respectively connected to the top of the two support frames. The clamping mechanism is connected to the connecting blocks. The bottom of the connecting blocks is provided with a slide rail. The support frame is engaged and connected within the slide rail, and the support frame can slide within the slide rail.

[0008] As a further embodiment of this utility model: the clamping mechanism includes two semi-circular fixing plates arranged with their centers opposite each other, four sliders, two bolts, four limiting blocks, four second nuts, and two abutting blocks. The two semi-circular fixing plates are respectively connected to the adjacent side of the two connecting blocks. The four sliders are symmetrically connected to the outer surfaces of the two semi-circular fixing plates. The bolts pass through the two sliders and are used to connect the two semi-circular fixing plates. The sliders can slide relative to the bolts. The four limiting blocks are respectively connected to the two bolts at both ends on the outer side of the sliders. The two abutting blocks are respectively connected to the inner surfaces of the two semi-circular fixing plates, and the two abutting blocks are detachably inserted into the interior of the two positioning holes.

[0009] As a further embodiment of this utility model: the rotating mechanism includes a connecting frame, a threaded hole, a threaded rod, and a handle. The connecting frame includes a crossbar and support rods located on both sides of the crossbar and perpendicular to the crossbar. The threaded hole is located on the crossbar, and the thread direction of the threaded hole is parallel to the base plate. The threaded rod passes through the connecting frame via the threaded hole. The position of the support rod corresponds to the connecting block. The support rod and the connecting block are detachably connected. The threaded rod passes through the base plate and is connected to the placement plate via a bearing. The threaded rod does not contact the base plate. The handle is connected to the top of the threaded rod and is used to rotate the threaded rod.

[0010] As a further improvement of this utility model: a locking block is provided at the connection point between the support rod and the connecting block, and locking grooves are provided on both sides of the connecting block. The locking block and the locking grooves are connected in cooperation. A sliding groove is provided on the crossbar, and the support rod can move along the sliding groove. A positioning screw is provided on the support rod. Furthermore, a through groove is provided above the crossbar, and the positioning screw is connected to the support rod through the through groove. After the support rod is connected to the connecting block, the positioning screw is tightened to fix the position of the support rod.

[0011] As a further embodiment of this utility model: two horizontal slots are provided on the placement plate, and the fixing mechanism is disposed between the two horizontal slots. The fixing mechanism includes a bidirectional lead screw, two connecting blocks, two clamping blocks, and a throttle. The bidirectional lead screw is rotatably connected to one side of one of the horizontal slots, and one end of the bidirectional lead screw passes through the other horizontal slot and extends to one side of the bottom plate. The two connecting blocks are threaded to the outer surface of the bidirectional lead screw, and the two connecting blocks are respectively located on the inner wall of the two horizontal slots. The two clamping blocks are respectively connected to the top of the two connecting blocks, and the throttle is connected to one end of the bidirectional lead screw.

[0012] As a further embodiment of this utility model: a locking mechanism is provided on one side of the fixing mechanism. The locking mechanism includes a fixing rod, a connecting plate, a circular plate, and a locking rod. The fixing rod is fixedly connected to one side of the base plate. The sliding sleeve is slidably connected to the circumferential surface of the fixing rod. The connecting plate is connected to the outer surface of the sliding sleeve. The circular plate is connected to the front side of the connecting plate.

[0013] As a further embodiment of this utility model: the locking mechanism further includes multiple locking rods and multiple locking holes. The multiple locking rods are connected in a ring at equal intervals on one side of the circular plate, and the multiple locking holes are opened in a ring at equal intervals on one side of the throttle handle. The multiple locking rods are respectively movably inserted into the interior of the multiple locking holes.

[0014] Working principle: The motor is placed upside down on top of the mounting plate, so that the bushing on the motor output shaft is located on top of the base plate. Then, according to the height of the bushing, the two support frames are rotated to the base plate, and the two first nuts are rotated onto the two support frames, thus ensuring that the support frames and the base plate are further locked. At this time, the two support frames, connecting blocks, first nuts and the base plate are connected as one unit. Then, according to the position of the bushing, the sliding slider drives the connecting block to slide on the support frame. Then, two of the sliders and the other two sliders are slid closer to each other, and drive the two semi-circular fixing plates to move closer to the outer surface of the bushing to fix the bushing, so that the two abutting blocks are inserted into the two positioning holes. Then, the four second nuts are rotated to lock the two semi-circular fixing plates. The support rod is provided with a locking block at the connection with the connecting block. The two sides of the connecting block are provided with locking grooves. The locking block and the locking grooves are connected and fixed. Then, the manual handle is turned to drive the threaded rod to rotate, so that the threaded hole rises. When the threaded hole rises, the connecting frame drives the two connecting blocks to move the two semi-circular fixing plates upward. At the same time, the base plate moves upward through the telescopic rod, so that the two abutting blocks pull out the bushing.

[0015] By adopting the above structure, this utility model has the following advantages compared with the prior art:

[0016] 1. This utility model utilizes the contact block in the dismantling mechanism installed on the base plate and the positioning hole on the bushing for clamping and fixing. Then, the threaded rod in the rotating mechanism is used to rotate and lift the connecting frame, making it easy and convenient for workers to remove the bushing. The process is time-saving and labor-saving and will not damage the bushing and pump shaft. It not only improves the dismantling efficiency of the bushing, but also reduces the labor intensity of workers.

[0017] 2. After the motor is placed on top of the mounting plate, the sliding sleeve moves the circular plate to the right through the connecting plate, causing multiple locking rods to retract from the multiple locking holes and release the lock on the throttle. Then, rotating the throttle drives the bidirectional lead screw to rotate, causing the two connecting blocks to move towards each other and move the two clamping blocks to fix the outer surface of the motor. This allows motors of different specifications to be fixed without the need for workers to press the motor by hand, reducing the workload of workers and preventing the motor from shaking when removing the bushing. After fixing, sliding the sliding sleeve in the opposite direction allows the multiple locking rods to re-insert into the multiple locking holes to lock the throttle, thereby further improving the motor fixing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the demolition mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the disassembly mechanism and positioning hole of this utility model;

[0021] Figure 4 This is a schematic diagram of the rotating mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the fixing mechanism and locking mechanism of this utility model;

[0023] Figure 6 This is a schematic diagram showing the location of the locking hole in this utility model;

[0024] Figure 7 This is a schematic diagram of the bottom surface of the connecting block of this utility model;

[0025] Figure 8 This is a schematic diagram of the support frame of this utility model.

[0026] In the diagram: 1. Base plate; 2. Removal mechanism; 201. Support frame; 202. Connecting block; 203. First nut; 204. Semi-circular fixing plate; 205. Slider; 206. Bolt; 207. Limiting block; 208. Second nut; 209. Contact block; 3. Rotation mechanism; 301. Connecting frame; 302. Threaded hole; 303. Threaded rod; 304. Handle; 305. Crossbar; 306. Support rod; 307. Locking block; 308. Locking groove; 4. Placement plate; 5. Bushing; 6. Fixing mechanism; 601. Two-way lead screw; 602. Connecting block; 603. Clamping block; 604. Turning handle; 7. Locking mechanism; 701. Fixing rod; 702. Sliding sleeve; 703. Connecting plate; 704. Circular plate; 705. Locking rod; 706. Locking hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Please see Figures 1 to 8 In this embodiment of the present invention, a pump shaft disassembly device includes: a base plate 1, a disassembly mechanism 2 provided on the top of the base plate 1 and extending to the bottom of the base plate 1, a rotating mechanism 3 provided on the disassembly mechanism 2, four telescopic rods respectively connected to the bottom of the base plate 1, the four telescopic rods respectively placed at the four corners below the base plate 1, a placement plate 4 connected to the bottom of the four telescopic rods, a motor provided on the placement plate 4, a through hole provided on the base plate 1, and a bushing 5 on the output shaft of the motor extending through the through hole to the top of the base plate 1 and the shaft of the output shaft of the motor... The sleeve 5 extends to the top of the base plate 1. The output shaft of the motor is connected to the sleeve 5, and the outer surface of the sleeve 5 has two positioning holes. The rotating mechanism 3 is used to drive the removal mechanism 2 to move up and down and remove the sleeve 5. The top of the placement plate 4 has two horizontal grooves, and a fixing mechanism 6 is provided between the two horizontal grooves. The fixing mechanism 6 extends to the top of the base plate 1 and one side of the base plate 1, respectively. The fixing mechanism 6 is used to fix motors of different specifications. A locking mechanism 7 is provided on one side of the placement plate 4. The locking mechanism 7 is used to lock the fixing mechanism 6.

[0030] Specifically, before use, place the motor on top of the placement plate 4, then connect the removal mechanism 2 and the base plate 1. Next, use the removal mechanism 2 to fix the bushing 5 on the motor shaft and lock the removal mechanism 2 into the two positioning holes. Then, rotate the rotating mechanism 3, which can drive the removal mechanism 2 to rise and pull the bushing 5 off the motor shaft, thus completing the removal of the bushing 5. This makes it easy for the staff to remove the bushing 5. Pull the locking mechanism 7 to engage the locking mechanism 6, and then rotate the fixing mechanism 6 to fix the outer surface of the motor. After fixing, slide the locking mechanism 7 in the opposite direction to lock the fixing mechanism 6 again, thereby further improving the fixing effect of the motor and preventing the motor from shaking.

[0031] Example 2

[0032] Please see Figures 2-8 In this embodiment of the present invention, the dismantling mechanism 2 includes two symmetrically arranged support frames 201, two connecting blocks 202, two first nuts 203, and a clamping mechanism. One end of each support frame 201 is connected to a connecting block 202, and the other end is provided with a threaded structure. The base plate 1 is provided with a threaded structure. The support frame 201 passes through the base plate 1 and is threadedly connected to the base plate 1. The first nuts 203 are threadedly connected to the support frame 201 below the base plate 1. The two connecting blocks 202 are respectively connected to the top of the two support frames 201. The clamping mechanism is connected to the connecting blocks 202. The bottom of the connecting blocks 202 is provided with a slide rail. The support frame 201 is engaged and connected in the slide rail, and the support frame 201 can slide in the slide rail.

[0033] The clamping mechanism includes two semi-circular fixing plates 204 with their centers facing each other, four sliders 205, two bolts 206, four limiting blocks 207, four second nuts 208, and two abutting blocks 209. The two semi-circular fixing plates 204 are respectively connected to the adjacent side of the two connecting blocks 202. The four sliders 205 are symmetrically connected to the outer surfaces of the two semi-circular fixing plates 204. The bolts 206 pass through the two sliders 205 and are used to connect the two semi-circular fixing plates 204. The sliders 205 can slide relative to the bolts 206. The four limiting blocks 207 are respectively connected to the two bolts 206 at both ends on the outer side of the sliders 205. The two abutting blocks 209 are respectively connected to the inner surfaces of the two semi-circular fixing plates 204, and the two abutting blocks 209 are detachably inserted into the interior of the two positioning holes.

[0034] The rotating mechanism 3 includes a connecting frame 301, a threaded hole 302, a threaded rod 303, and a handle 304. The connecting frame 301 includes a crossbar 305 and support rods 306 located on both sides of the crossbar 305 and perpendicular to the crossbar 305. The threaded hole 302 is located on the crossbar 305, and the thread direction of the threaded hole 302 is parallel to the base plate 1. The threaded rod 303 passes through the connecting frame 301 through the threaded hole 302. The position of the support rod 306 corresponds to the connecting block 202. The support rod 306 is detachably connected to the connecting block 202. The threaded rod 303 passes through the base plate 1 and is connected to the placement plate 4 through a bearing. The threaded rod 303 does not contact the base plate 1. The handle 304 is connected to the top of the threaded rod 303 and is used to rotate the threaded rod 303.

[0035] A locking block 307 is provided at the connection point between the support rod 306 and the connecting block 202. The connecting block 202 has locking grooves 308 on both sides. The locking block 307 and the locking grooves 308 are connected in cooperation. The crossbar 305 has a sliding groove, and the support rod 306 can move along the sliding groove. The support rod 306 is provided with a positioning screw. Furthermore, a through groove is provided above the crossbar 305. The positioning screw is connected to the support rod 306 through the through groove. After the support rod 306 is connected to the connecting block 202, the positioning screw is tightened to fix the position of the support rod 306.

[0036] The placement plate 4 has two horizontal slots. The fixing mechanism 6 is disposed between the two horizontal slots. The fixing mechanism 6 includes a bidirectional lead screw 601, two connecting blocks 602, two clamping blocks 603, and a throttle 604. The bidirectional lead screw 601 is rotatably connected to one side of one of the horizontal slots, and one end of the bidirectional lead screw 601 passes through the other horizontal slot and extends to one side of the base plate 1. The two connecting blocks 602 are threaded to the outer surface of the bidirectional lead screw 601, and the two connecting blocks 602 are respectively located on the inner wall of the two horizontal slots. The two clamping blocks 603 are respectively connected to the top of the two connecting blocks 602. The throttle 604 is connected to one end of the bidirectional lead screw 601.

[0037] Specifically, first, the motor is placed upside down on top of the placement plate 4, with the output shaft located on top of the base plate 1. Then, according to the height of the bushing 5, the two support frames 201 are rotated to the base plate 1, and the two first nuts 203 are rotated to the bottom of the two support frames 201 for locking. At this time, the two support frames 201, the connecting block 202, the first nuts 203, and the base plate 1 are connected as one unit. Then, the connecting block 202 can slide on the support frame 201, thus sliding the slider 205. The sliders 205 move closer to each other and drive the two semi-circular fixing plates 204 to move closer to the outer surface of the bushing 5 to fix the bushing 5. The abutment block 209 is inserted into the two positioning holes. Then, the four second nuts 208 are rotated to lock the two semi-circular fixing plates 204. Then, the sliding support rod 306 is slid along the groove on the crossbar 305, and the locking block 307 on the support rod 306 is engaged with the locking groove 308. Then, the manual handle 304 is turned to drive the threaded rod 303 to rotate, causing the threaded hole 302 to rise. When the threaded hole 302 rises, the two semi-circular fixing plates 204 move upward through the two connecting blocks 202, so that the two abutment blocks 209 pull out the bushing 5, making it easy for the staff to remove the bushing 5.

[0038] Example 3

[0039] Please see Figures 5-6 In this embodiment of the present invention, a pump shaft disassembly device includes a fixing mechanism 6 comprising a bidirectional lead screw 601, two connecting blocks 602, two clamping blocks 603, and a throttle 604. The bidirectional lead screw 601 is rotatably connected to one side of one of the transverse grooves, and one end of the bidirectional lead screw 601 passes through the other transverse groove and extends to one side of the base plate 1. The two connecting blocks 602 are threadedly connected to the outer surface of the bidirectional lead screw 601, and the two connecting blocks 602 are respectively located on the inner walls of the two transverse grooves. The two clamping blocks 603 are respectively connected to the top of the two connecting blocks 602. The throttle 604 is connected to one end of the bidirectional lead screw 601. The locking mechanism 7 includes a fixing rod. The locking mechanism 7 includes a fixed rod 701, a sliding sleeve 702, a connecting plate 703, a circular plate 704, and a locking rod 705. The fixed rod 701 is fixedly connected to one side of the base plate 1. The sliding sleeve 702 is slidably connected to the circumferential surface of the fixed rod 701. The connecting plate 703 is connected to the outer surface of the sliding sleeve 702. The circular plate 704 is connected to the front side of the connecting plate 703. The locking mechanism 7 also includes multiple locking rods 705 and multiple locking holes 706. The multiple locking rods 705 are connected in a ring at equal intervals on one side of the circular plate 704. The multiple locking holes 706 are opened in a ring at equal intervals on one side of the throttle 604. The multiple locking rods 705 are movably inserted into the multiple locking holes 706 respectively.

[0040] Specifically, after the motor is placed on top of the placement plate 4, the sliding sleeve 702 drives the circular plate 704 to move to the right through the connecting plate 703, causing multiple locking rods 705 to retract from the inside of multiple locking holes 706 and release the lock on the throttle 604. Then, rotating the throttle 604 drives the bidirectional lead screw 601 to rotate, causing the two connecting blocks 602 to move towards each other, driving the two clamping blocks 603 to fix the outer surface of the motor. At this time, sliding the sliding sleeve 702 in the reverse direction allows the multiple locking rods 705 to re-insert into the multiple locking holes 706 to lock the throttle 604. Thus, motors of different specifications can be fixed without the need for workers to press the motor by hand, thereby further improving the motor fixing effect. This not only reduces the workload of workers, but also prevents the motor from shaking when removing the bushing 5. After fixing, sliding the sliding sleeve 702 in the reverse direction allows the multiple locking rods 705 to re-insert into the multiple locking holes 706 to lock the throttle 604, further improving the motor fixing effect.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A pump shaft disassembly device comprising: The bottom plate (1) is characterized in that the bottom plate (1) is connected with a removal mechanism (2) above, the removal mechanism (2) is provided with a rotating mechanism (3), the bottom plate (1) is connected with a plurality of telescopic rods at the bottom, the bottom plate (1) can move up and down through the telescopic rods, the bottom plate (1) is connected with a placing plate (4) at the bottom, the placing plate (4) is provided with a motor, the bottom plate (1) is provided with a through hole, the shaft sleeve (5) on the output shaft of the motor extends to the upper side of the bottom plate (1) through the through hole, two positioning holes are formed in the outer surface of the shaft sleeve (5), the rotating mechanism (3) is used for driving the removal mechanism (2) to move up and down and taking out the shaft sleeve (5), and the upper side of the placing plate (4) is provided with a fixing mechanism (6) for fixing the motor.

2. A pump shaft removal device according to claim 1, wherein, The removal mechanism (2) comprises two support frames (201), two connecting blocks (202), two first nuts (203) and a clamping mechanism, one end of the support frame (201) is connected with the connecting block (202), the other end is provided with a threaded structure, the bottom plate (1) is provided with a threaded structure, the support frame (201) passes through the bottom plate (1) and is screwed with the bottom plate (1), the first nut (203) is screwed with the support frame (201) below the bottom plate (1), the two connecting blocks (202) are connected at the top of the two support frames (201) respectively, the clamping mechanism is connected with the connecting block (202), the connecting block (202) is provided with a slide way at the bottom, and the support frame (201) is clamped and connected in the slide way, and the support frame (201) can slide in the slide way.

3. A pump shaft removal device according to claim 2, wherein, The clamping mechanism comprises two semicircular fixed plates (204) with their centers opposite to each other, four sliding blocks (205), two bolts (206), four limiting blocks (207), four second nuts (208) and two abutting blocks (209), one side of the two semicircular fixed plates (204) is connected with the two connecting blocks (202) respectively, the four sliding blocks (205) are connected on the outer surfaces of the two semicircular fixed plates (204) in a symmetrical state respectively, the bolt (206) passes through the two sliding blocks (205), the bolt (206) is used for connecting the two semicircular fixed plates (204), the sliding block (205) can slide relative to the bolt (206), the limiting block (207) is connected with the two bolts (206) respectively at the two ends outside the sliding block (205), the abutting block (209) is connected with the inner surfaces of the two semicircular fixed plates (204) respectively, and the two abutting blocks (209) are detachably inserted into the two positioning holes respectively.

4. A pump shaft removal device according to claim 1, wherein, The rotating mechanism (3) comprises a connecting frame (301), a threaded hole (302), a threaded rod (303) and a handle (304), the connecting frame (301) comprises a crossbar (305) and a support rod (306) arranged on both sides of the crossbar (305) and perpendicular to the crossbar (305), the threaded hole (302) is arranged on the crossbar (305), the threaded direction of the threaded hole (302) is parallel to the bottom plate (1), the threaded rod (303) passes through the connecting frame (301) through the threaded hole (302), the position of the support rod (306) corresponds to the connecting block (202), the support rod (306) is detachably connected with the connecting block (202), the threaded rod (303) passes through the bottom plate (1) and is connected with the placing plate (4) through a bearing, the threaded rod (303) does not contact the bottom plate (1), the handle (304) is connected to the top end of the threaded rod (303), and the handle (304) is used for rotating the threaded rod (303).

5. A pump shaft removal device according to claim 4, wherein, A clamping block (307) is arranged on the support rod (306) at the connecting position of the connecting block (202), clamping grooves (308) are arranged on both sides of the connecting block (202), the clamping block (307) and the clamping groove (308) are connected in a matched mode, a sliding groove is arranged on the crossbar (305), the support rod (306) can move along the sliding groove, and a positioning screw rod is arranged on the support rod (306) and used for fixing the position of the support rod (306) relative to the crossbar (305).

6. A pump shaft removal device according to claim 1, wherein, Two horizontal grooves are arranged on the placing plate (4), the fixing mechanism (6) is arranged between the two horizontal grooves, the fixing mechanism (6) comprises a bidirectional screw rod (601), two link blocks (602), two clamping blocks (603) and a rotating handle (604), the bidirectional screw rod (601) is rotatably connected to one side of one of the horizontal grooves, one end of the bidirectional screw rod (601) penetrates the other horizontal groove and extends to one side of the bottom plate (1), the two link blocks (602) are threadedly connected to the outer surface of the bidirectional screw rod (601), and the two link blocks (602) are respectively located on the inner walls of the two horizontal grooves, and the two clamping blocks (603) are respectively connected to the top portions of the two link blocks (602).

7. A pump shaft removal device according to claim 5, wherein, A locking mechanism (7) is arranged on one side of the fixing mechanism (6), the locking mechanism (7) comprises a fixing rod (701), a sliding sleeve (702), a link plate (703), a circular plate (704) and a locking rod (705), the fixing rod (701) is fixedly connected to one side of the bottom plate (1), the sliding sleeve (702) is slidably connected to the circumferential surface of the fixing rod (701), the link plate (703) is connected to the outer surface of the sliding sleeve (702), and the circular plate (704) is connected to the front surface of the link plate (703).

8. A pump shaft removal device according to claim 7, wherein, The locking mechanism (7) further comprises a plurality of locking rods (705) and a plurality of locking holes (706), the plurality of locking rods (705) are connected equidistantly on one side of the circular plate (704) in a ring shape, the plurality of locking holes (706) are arranged equidistantly on one side of the rotating handle (604) in a ring shape, and the plurality of locking rods (705) are respectively inserted movably into the plurality of locking holes (706).

9. A pump shaft removal device according to claim 6, wherein, The rotating handle (604) is connected to one end of the bidirectional screw rod (601).

10. A pump shaft removal device according to claim 1, wherein, The plurality of telescopic rods comprise four telescopic rods, and the four telescopic rods are respectively arranged at four corners below the bottom plate (1).

Images