Heavy-load pin shaft inserting and pulling machine

Abstract

The invention discloses a heavy-load pin shaft inserting and pulling machine which comprises a power unit, a transmission unit and a locking unit. The transmission unit comprises a fixed frame and a sliding frame capable of sliding along the fixed frame; the power unit is used for driving the sliding frame to slide along the fixed frame; the locking unit is detachably installed on the sliding frame and used for locking the target pin shaft. The device can be installed at one end of the installation position of the target pin shaft, the target pin shaft is connected with the sliding frame of the transmission unit through the locking unit, the sliding frame is driven by the power unit to drive the target pin shaft to move, and the target pin shaft is pulled out and inserted into the installation position.

Description

Technical Field

[0001] The present invention belongs to the technical field of pin installation and disassembly, and particularly relates to a heavy-duty pin plugging and unplugging machine. Background Art

[0002] In the disassembly and installation scenarios of large heavy-duty equipment, the disassembly and installation of pins are often encountered. Some pins in large heavy-duty equipment are characterized by large diameter and heavy weight. For the disassembly and installation of such pins, at present, it mainly relies on manual installation. Specifically, manual hammering is used to move the position of the pin to achieve the disassembly or installation of the pin.

[0003] Traditional manual installation is dangerous, has low efficiency, and is also prone to damage the pin. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heavy-duty pin plugging and unplugging machine for the deficiencies in the above-mentioned prior art. The machine can be installed at one end of the installation location of the target pin, connect the target pin and the sliding frame of the transmission unit by using the locking unit, and drive the sliding frame to drive the target pin to move by using the power unit, so as to realize the extraction and insertion of the target pin at the installation location.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a heavy-duty pin plugging and unplugging machine, including: a power unit, a transmission unit, and a locking unit;

[0006] The transmission unit includes a fixed frame and a sliding frame that can slide along the fixed frame;

[0007] The power unit is used to drive the sliding frame to slide along the fixed frame;

[0008] The locking unit is detachably installed on the sliding frame, and the locking unit is used to lock the target pin.

[0009] For the above heavy-duty pin plugging and unplugging machine, the fixed frame is a fixed nut, the sliding frame is a hollow lead screw, and the fixed nut and the hollow lead screw are in spiral fit; the inner cavity of the hollow lead screw can accommodate the target pin.

[0010] For the above heavy-duty pin plugging and unplugging machine, the locking unit includes a split key and a compensating shaft. The split key is detachably connected to the hollow lead screw, the compensating shaft is detachably connected to the split key, and there are multiple connection points on the shaft body of the compensating shaft for connecting the split key; one end of the compensating shaft can be detachably connected to the end of the target pin.

[0011] For the above heavy-duty pin plugging and unplugging machine, the locking unit further includes a guide cylinder. The front end of the guide cylinder is detachably connected to the rear end of the hollow lead screw, and the split key is connected to the rear end of the guide cylinder.

[0012] The above-mentioned heavy-duty pin insertion / extraction machine, wherein the power unit includes a frame, a gear transmission mechanism, and a motor drive mechanism;

[0013] The gear transmission mechanism and the motor drive mechanism are installed on the frame, and the frame is detachably connected to the fixing nut;

[0014] The gear transmission mechanism and the motor drive mechanism are drivingly connected, and the gear transmission mechanism is used to drive the hollow lead screw to rotate.

[0015] The above-mentioned heavy-duty pin insertion / extraction machine, wherein the power unit further includes a rotating ring, the rotating ring is sleeved on the hollow lead screw, the inner wall of the rotating ring is drivingly connected to the hollow lead screw, and the hollow lead screw can slide axially along the inner wall of the rotating ring, and the rotating ring is drivingly connected to the gear transmission mechanism.

[0016] The above-mentioned heavy-duty pin insertion / extraction machine, wherein at least one slider is provided on the circumferential direction of the hollow lead screw, a sliding groove corresponding to the slider is opened on the inner wall of the rotating ring, the sliding groove is axially opened, the slider is clamped in the sliding groove and can slide axially along the sliding groove.

[0017] The above-mentioned heavy-duty pin insertion / extraction machine, wherein there are at least two gear transmission mechanisms on the frame, and the two gear transmission mechanisms are evenly supported in the circumferential direction of the rotating ring.

[0018] The above-mentioned heavy-duty pin insertion / extraction machine, wherein the frame is of an annular structure.

[0019] The above-mentioned heavy-duty pin insertion / extraction machine, wherein a portable handle is provided on the frame.

[0020] The present invention has the following advantages compared with the prior art:

[0021] 1. The power unit, the transmission unit, and the locking unit are detachably connected to each other, which are fully decoupled. Multiple transmission units can share a set of power unit and locking unit at the work site, which helps to reduce the application cost.

[0022] 2. The transmission unit includes a fixed frame and a sliding frame. The power unit is used to drive the sliding frame to slide along the fixed frame, driving the pin to move, replacing manual hammering of the pin, which can effectively reduce the danger of pin disassembly and installation, improve the efficiency of pin disassembly and installation, and reduce damage to the pin.

[0023] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 is Figure 1 Schematic diagram after removing the power unit.

[0026] Figure 3 This is a schematic cross-sectional structure diagram of the present invention.

[0027] Explanation of the reference numerals in the drawings:

[0028] 1—Target pin shaft; 2—Fixed nut; 3—Hollow lead screw;

[0029] 4—Split key; 5—Compensation shaft; 6—Circular groove;

[0030] 7—Guide cylinder; 8—Frame; 9—Gear transmission mechanism;

[0031] 10—Motor drive mechanism; 11—Rotating ring; 12—Portable handle;

[0032] 13—Slider. Specific implementation manner

[0033] As Figure 1 — Figure 3 shown, a heavy-duty pin insertion and extraction machine includes: a power unit, a transmission unit, and a locking unit; the transmission unit includes a fixed frame and a sliding frame that can slide along the fixed frame; the power unit is used to drive the sliding frame to slide along the fixed frame; the locking unit is detachably installed on the sliding frame, and the locking unit is used to lock the target pin shaft 1.

[0034] In this embodiment, the fixed frame is the fixed nut 2, the sliding frame is the hollow lead screw 3, and the fixed nut 2 and the hollow lead screw 3 are in spiral fit; the inner cavity of the hollow lead screw 3 can accommodate the target pin shaft 1.

[0035] During actual use, the hollow lead screw 3 rotates, and under the action of the spiral fit, the hollow lead screw 3 slides axially along the fixed nut 2.

[0036] In this embodiment, the locking unit includes a split key 4 and a compensation shaft 5. The split key 4 is detachably connected to the hollow lead screw 3, the compensation shaft 5 is detachably connected to the split key 4, and multiple connection points for the split key 4 are provided on the shaft body of the compensation shaft 5; one end of the compensation shaft 5 can be detachably connected to the end of the target pin shaft 1.

[0037] It should be noted that the multiple connection points are multiple circular grooves 6 spaced apart on the compensation shaft 5, and the split key 4 can be clamped in the circular grooves 6 at different positions to achieve mutual fixation at different positions on the shaft body of the compensation shaft 5.

[0038] The existence of the compensation shaft 5 enables the hollow lead screw 3 and the fixed nut 2 not to be made very long. During actual use, after the axial stroke of the hollow lead screw 3 is completed, the connection between the split key 4 and the compensation shaft 5 is loosened, then the hollow lead screw 3 is reset, and then the compensation shaft 5 and the split key 4 are connected, and then the hollow lead screw 3 is driven to move again. For a relatively long target pin shaft 1, such operations can be carried out in multiple times to achieve insertion and extraction.

[0039] In this embodiment, the locking unit further includes a guide cylinder 7. The front end of the guide cylinder 7 is detachably connected to the end of the hollow lead screw 3, and the split key 4 is connected to the rear end of the guide cylinder 7.

[0040] It should be noted that the existence of the guide cylinder 7, on the one hand, plays a bridging role in the connection between the split key 4 and the hollow lead screw 3, so that there is no need to further process the structure for connecting with the split key 4 at the rear end of the hollow lead screw 3, reducing the processing difficulty of the lead screw. In addition, because the guide cylinder 7 often needs to be disassembled and installed with the compensation shaft 5, it is easy to be damaged. After being damaged, because the guide cylinder 7 and the hollow lead screw 3 are designed separately, it is convenient to replace after damage.

[0041] In addition, the existence of the guide cylinder 7 plays a certain role in blocking the rear end of the hollow lead screw 3, and can avoid foreign objects from entering the raceway of the hollow lead screw 3 to a certain extent;

[0042] The guide cylinder 7 and the hollow lead screw 3 form a receiving space for the target pin shaft 1. When the target pin shaft 1 is pulled out, it can be located in the receiving space, and it is convenient to insert the pin shaft into the pin hole when in use.

[0043] Preferably, there is an annular groove on the outer wall of the guide cylinder 7. The main function of the annular groove is to reduce the weight of the guide cylinder 7.

[0044] In this embodiment, the power unit includes a frame 8, a gear transmission mechanism 9 and a motor drive mechanism 10; the gear transmission mechanism 9 and the motor drive mechanism 10 are installed on the frame 8, and the frame 8 is detachably connected to the fixed nut 2; the gear transmission mechanism 9 and the motor drive mechanism 10 are in transmission connection, and the gear transmission mechanism 9 is used to drive the hollow lead screw 3 to rotate.

[0045] In this embodiment, the power unit further includes a rotating ring 11. The rotating ring 11 is sleeved on the hollow lead screw 3. The inner wall of the rotating ring 11 is in transmission connection with the hollow lead screw 3, and the hollow lead screw 3 can axially slide along the inner wall of the rotating ring 11. The rotating ring 11 is in transmission connection with the gear transmission mechanism 9.

[0046] Preferably, there are a plurality of gear transmission mechanisms 9 on the frame 8, and the plurality of gear transmission mechanisms 9 are uniformly supported in the circumferential direction of the rotating ring 11. The purpose of using a plurality of gear transmission mechanisms 9 is mainly to achieve good support for the rotating ring 11, keep the axis stable when the rotating ring 11 rotates, and reduce the radial runout of the rotating ring 11.

[0047] Preferably, each gear transmission mechanism 9 corresponds to a motor drive mechanism 10. The advantage of doing this is that the force applied by each gear transmission mechanism 9 to the rotating ring 11 is basically the same, which can better keep the rotating ring 11 rotating smoothly.

[0048] Preferably, the frame 8 is of an annular structure, and the frame 8 is provided with a portable handle 12.

[0049] In actual use, the fixing nut 2 and the hollow lead screw 3 will always be installed at the pin hole at one end of the target pin 1. When the pin needs to be operated, the power unit and the locking unit are installed.

[0050] The portable handle 12 facilitates the relocation of the power unit.

[0051] In addition, the advantage of doing this is that when there are many target pins 1 to be disassembled and assembled at a site and their sizes are similar, fixing nuts 2 and hollow lead screws 3 can be installed at the pin holes at one end of each target pin 1, and then a group of power units and locking units are shared by multiple fixing nuts 2 and hollow lead screws 3. Each time a pin needs to be installed or disassembled, the worker only needs to carry the power unit and the locking unit to operate. Multiple transmission units can share a group of power units and locking units, which can greatly save costs.

[0052] In this embodiment, there is at least one slider 13 on the circumferential direction of the hollow lead screw 3, and a chute corresponding to the slider 13 is opened on the inner wall of the rotating ring 11. The chute is axially opened, and the slider 13 is clamped in the chute and can slide axially along the chute.

[0053] It should be noted that in actual implementation, there is a shoulder at the position of the hollow lead screw 3 near the rear end. The shoulder can be evenly provided with a plurality of sliders 13 (guide keys), and corresponding chutes are opened on the inner wall of the rotating ring 11. At this time, the sliders 13 on the shoulder can move along the chutes. The connection structure between the rotating ring 11 and the hollow lead screw 3 can also adopt the following method. A plurality of chutes are evenly opened on the shoulder, and a plurality of tracks corresponding to the chutes are evenly arranged on the inner wall of the rotating ring 11. The plurality of chutes are respectively clamped on their corresponding tracks. When the rotating ring 11 rotates, the plurality of tracks drive the plurality of chutes to rotate, thereby driving the hollow lead screw 3 to rotate. At the same time, the chutes move along the tracks, that is, the hollow lead screw 3 moves axially.

[0054] During the installation of the present invention, the front end of the hollow lead screw 3 is inserted into the fixed nut 2, and the hollow lead screw 3 is threadedly connected to the fixed nut 2; the rear end of the hollow lead screw 3 is inserted into the rotating ring 11, and when the rotating ring 11 rotates, it drives the hollow lead screw 3 to rotate; the rotating ring 11 is driven by the motor driving mechanism 10 to drive the gear transmission mechanism 9 to drive the rotating ring 11 to rotate; the rear end of the hollow lead screw 3 is detachably connected to the guiding cylinder 7, and the rear end of the guiding cylinder 7 is connected to the split key 4; the front end of the compensating shaft 5 can pass through the rear end of the guiding cylinder 7 and extend into the interior of the guiding cylinder 7, and the split key 4 can be connected to the shaft body of the compensating shaft 5.

[0055] During use, taking the scene of pin extraction as an example, the fixed nut 2 is fixedly installed at the pin hole at one end of the target pin 1, and then the front end of the compensating shaft 5 is connected to the rear end of the target pin 1 (for example, threadedly connected). Then, the motor driving mechanism 10 is started. The motor driving mechanism 10 drives the gear transmission mechanism 9 (the gear transmission mechanism 9 can be a speed reduction mechanism to reduce the speed and increase the torque). The gear transmission mechanism 9 drives the rotating ring 11 to rotate, thereby driving the hollow lead screw 3 to rotate. When the hollow lead screw 3 rotates, due to the effect of the fixed nut 2, the hollow lead screw 3 will move axially while rotating. When extracting the pin, it moves backward. The hollow lead screw 3 moves backward, driving the guiding cylinder 7 to move. The guiding cylinder 7 drives the split key 4 to move. The split key 4 drives the compensating shaft 5 to move, and the compensating shaft 5 pulls out the target pin 1 from the pin hole; if the target pin 1 cannot be pulled out in one stroke, the connection between the split key 4 and the compensating shaft 5 is disassembled, then the hollow lead screw 3 is reset, and then a new point on the compensating shaft 5 is connected to the split key 4, and then the next stroke of the hollow lead screw 3 is started.

[0056] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An overloaded pin insertion and extraction machine, characterized in that Comprising: A power unit, a transmission unit and a locking unit; The transmission unit includes a fixed frame and a sliding frame that can slide along the fixed frame; The power unit is used to drive the sliding frame to slide along the fixed frame; The locking unit is detachably mounted on the sliding frame, and the locking unit is used to lock the target pin shaft.

2. The heavy-duty pin insertion and extraction machine according to claim 1, characterized in that, The fixed frame is a fixed nut, the sliding frame is a hollow lead screw, and the fixed nut and the hollow lead screw are in screw fit; the inner cavity of the hollow lead screw can accommodate the target pin shaft.

3. The heavy-duty pin insertion and extraction machine according to claim 2, characterized in that, The locking unit includes a split key and a compensating shaft. The split key is detachably connected to the hollow lead screw, and the compensating shaft is detachably connected to the split key. There are multiple connection points on the shaft body of the compensating shaft for the split key to connect; one end of the compensating shaft can be detachably connected to the end of the target pin shaft.

4. The heavy-duty pin inserting and extracting machine according to claim 3, characterized in that The locking unit further includes a guide cylinder. The front end of the guide cylinder is detachably connected to the rear end of the hollow lead screw, and the split key is connected to the rear end of the guide cylinder.

5. The heavy-duty pin inserting and extracting machine according to claim 2, wherein The power unit includes a frame, a gear transmission mechanism and a motor drive mechanism; The gear transmission mechanism and the motor drive mechanism are mounted on the frame, and the frame is detachably connected to the fixed nut; The gear transmission mechanism and the motor drive mechanism are in transmission connection, and the gear transmission mechanism is used to drive the hollow lead screw to rotate.

6. The heavy-duty pin inserting and extracting machine according to claim 5, characterized in that, The power unit further includes a rotating ring. The rotating ring is sleeved on the hollow lead screw. The inner wall of the rotating ring is in transmission connection with the hollow lead screw, and the hollow lead screw can slide axially along the inner wall of the rotating ring. The rotating ring is in transmission connection with the gear transmission mechanism.

7. The heavy-duty pin insertion and extraction machine according to claim 6, characterized in that, There is at least one slider on the circumferential direction of the hollow lead screw, and a corresponding chute for the slider is opened on the inner wall of the rotating ring. The chute is axially opened, and the slider is clamped in the chute and can slide axially along the chute.

8. The heavy-duty pin inserting and extracting machine according to claim 6 or 7, characterized in that, There are at least two gear transmission mechanisms on the frame, and the two gear transmission mechanisms are evenly supported in the circumferential direction of the rotating ring.

9. The heavy-duty pin inserting and extracting machine according to claim 6 or 7, characterized in that, The frame is of an annular structure.

10. The heavy-duty pin inserting and extracting machine according to claim 9, characterized in that, The frame is provided with a portable handle.

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