Pin shaft dismounting and mounting device

Abstract

The utility model relates to a pin shaft disassembling and assembling device which comprises a positioning frame and a pushing assembly. The pushing assembly is arranged at the first end of the positioning frame and can move towards or away from the second end of the positioning frame in the length direction of the positioning frame so as to disassemble and / or assemble the pin shaft. The second end is opposite to the first end; the second end of the positioning frame is provided with a positioning part used for positioning the pin shaft so that the far end of the pushing assembly can be aligned with the pin shaft. The pin shaft replacing device has the beneficial effects that the pin shaft is positioned by the positioning part of the positioning frame, and then the pushing assembly moves towards the second end of the positioning frame, so that the far end of the pushing assembly is aligned with and pushes the pin shaft until the pin shaft is separated from or inserted into a mechanism through which the pin shaft penetrates, the pin shaft is quickly and accurately assembled and disassembled, and the stability and the safety in the replacing process are ensured; and blind operation and unnecessary damage when a screwdriver is used for dismounting are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to dismantling technical field especially relates to a pin shaft dismounting device. BACKGROUND

[0002] In the actual operation process of the power supply system, due to various factors, the circuit breaker may have various faults, and the hydraulic spring energy storage mechanism fault in the circuit breaker is one of the common faults.

[0003] The hydraulic spring energy storage mechanism is complex in structure and contains precise components. The gear in the circuit breaker hydraulic spring energy storage mechanism is plastic, and often breaks due to material wear and aging, requiring frequent maintenance and replacement. The gear is sleeved on the rotating shaft, and a pin shaft is arranged on the rotating shaft and the gear to position the gear. Therefore, the pin shaft needs to be assembled and disassembled when replacing the gear. Due to the space limitation and the large number of components inside the hydraulic spring energy storage mechanism, the traditional method of disassembling the pin shaft is to manually disassemble the components covering the gear and then disassemble the pin shaft using a screwdriver and other tools. Due to the large number of components covering the gear and the small operating space, manual disassembly is time-consuming and labor-intensive, and the labor cost is high. Not only is the efficiency low, but also the equipment is easily damaged and there is a personal safety hazard. Moreover, the process of disassembling the components requires power-off treatment, especially when the hydraulic spring energy storage mechanism in the rail transit electrical equipment is powered off for maintenance, which affects the operation of urban rail transit. SUMMARY

[0004] (I) Technical problem to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a pin shaft dismounting device, which solves the technical problem that manual disassembly of the pin shaft arranged on the gear in the hydraulic spring energy storage mechanism is time-consuming and labor-intensive, the labor cost is high, the efficiency is low, the equipment is easily damaged, there is a personal safety hazard, and the process of disassembling the components requires power-off treatment.

[0006] (II) Technical scheme

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the main technical scheme including:

[0008] The utility model embodiment provides a pin shaft dismounting device, which comprises a positioning frame and a pushing assembly.

[0009] The pushing assembly is arranged at the first end of the positioning frame and can move along the length direction of the positioning frame towards or away from the second end of the positioning frame to disassemble and / or assemble the pin shaft. The second end is arranged opposite to the first end.

[0010] The second end of the positioning frame is provided with a positioning part for positioning the pin shaft, so that the distal end of the push assembly is aligned with the pin shaft.

[0011] According to the utility model, the positioning part comprises a first arc-shaped groove with an opening facing the first end, and the first arc-shaped groove can abut against a gear wheel provided with the pin shaft.

[0012] According to the utility model, the positioning part further comprises a second arc-shaped groove with an opening facing the first end, and the second arc-shaped groove can abut against a gear shaft provided with the pin shaft.

[0013] The first arc-shaped groove and the opposite side of the first arc-shaped groove form a space for the pin shaft to disengage from the gear wheel and the gear shaft.

[0014] According to the utility model, the first arc-shaped groove can abut against a gear boss of the gear wheel, and the space can also accommodate an outer edge of a gear body of the gear wheel.

[0015] A first avoiding space is arranged between the first end of the positioning frame and the first arc-shaped groove to accommodate the gear body and the gear boss.

[0016] A second avoiding space is arranged between the first end of the positioning frame and the second arc-shaped groove to accommodate the gear shaft.

[0017] According to the utility model, the push assembly comprises a threaded rod and a pulley push pin.

[0018] The threaded rod can be threadedly connected to the first end of the positioning frame, and a slot is formed in the distal end of the threaded rod.

[0019] The pulley push pin comprises a pulley and a push pin, the pulley is rotationally connected to the proximal end of the push pin and is inserted into the slot, and the distal end of the push pin can be aligned with one end of the pin shaft.

[0020] When the threaded rod rotates relative to the positioning frame, the threaded rod can drive the pulley to rotate relative to the push pin, and can drive the pulley push pin to move towards or away from the second end of the positioning frame as a whole, and the push pin can push the pin shaft to disassemble or assemble the pin shaft.

[0021] According to the utility model, the distal end of the push pin has a needle tip capable of being embedded in one end of the pin shaft.

[0022] According to the utility model, the diameter of the push pin is less than or equal to the diameter of the pin shaft.

[0023] According to the utility model, the proximal end of the threaded rod is fixedly connected to a rotating rod, and the rotating rod is perpendicular to the threaded rod.

[0024] According to the utility model, the pin shaft dismounting device is used for dismounting the pin shaft arranged on the gear and the gear shaft in the hydraulic spring energy storage mechanism and / or mounting the pin shaft on the gear and the gear shaft in the hydraulic spring energy storage mechanism.

[0025] (Three) beneficial effects

[0026] The beneficial effects of the utility model are that: the pin shaft dismounting device of the utility model, when the pin shaft dismounting device is used, the pin shaft is positioned by the positioning part of the positioning frame, then the push assembly moves towards the second end of the positioning frame, so that the distal end of the push assembly is aligned with and pushes the pin shaft to the mechanism where the pin shaft is arranged, so that the pin shaft is quickly and accurately mounted and dismounted, and the stability and safety during replacement are ensured, and blind operation and unnecessary damage during dismounting by using a screwdriver are avoided. Meanwhile, the pin shaft dismounting device has strong universality, can conveniently and quickly dismount the pin shaft on different mechanisms under different working conditions and dismount the pin shaft of different specifications and models, is especially suitable for use under the working condition that operation is inconvenient in a narrow space, facilitates use of maintenance personnel, and has good popularization effect. Meanwhile, the pin shaft dismounting device can simultaneously mount and dismount the pin shaft, does not need to replace mounting and dismounting tools, simplifies operation steps, and improves work efficiency.

[0027] Further, when the pin shaft dismounting device is used for dismounting the pin shaft arranged on the gear in the hydraulic spring energy storage mechanism, only the butterfly spring above the gear and the motor on one side of the gear need to be dismounted, so that the pin shaft dismounting device as a whole can be inserted into one side of the gear from the exposed space, since only the motor and the butterfly spring need to be dismounted when the pin shaft dismounting device is used, the number of dismounted parts is small, dismounting efficiency and safety can be effectively improved, power-off time can be effectively shortened or even power-off operation is not needed, and the operation of urban rail transit is not affected during maintenance of the hydraulic spring energy storage mechanism in the rail transit electrical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a bottom view schematic view when the pin shaft dismounting device of the utility model cooperates with the gear.

[0029] Figure 2 It is a perspective view schematic view. Figure 1

[0030] Figure 3 It is an exploded view schematic view of the pin shaft dismounting device of the utility model.

[0031] Figure 4 It is a side view schematic view. Figure 3

[0032] Figure 5 It is a side view schematic view when the pin shaft dismounting device cooperates with the gear. ​​

[0033] [Legend of the drawing]

[0034] 1: positioning frame; 11: first arc-shaped groove; 12: second arc-shaped groove; 13: first avoiding space; 14: second avoiding space; 15: space;

[0035] 2: pushing assembly; 21: threaded rod; 211: insertion slot; 212: rotating rod; 22: pulley push pin; 221: pulley; 222: push pin; 2221: needle tip;

[0036] 3: gear; 31: gear body; 32: gear boss;

[0037] 4: gear shaft;

[0038] 5: pin shaft;

[0039] A: insertion hole. DETAILED DESCRIPTION

[0040] In order to better explain the utility model, so as to facilitate understanding, the following will be combined with the drawings, through specific embodiments, the utility model is described in detail. The pin shaft dismounting device is when dismounting the pin shaft 5, "up", "down" direction is taken as a reference, that is, the positioning frame 1 is placed with the side of the first avoiding space 13 downward, and the side of the second avoiding space 14 upward. Figure 4 And 5 The positioning of the positioning frame 1 is taken as a reference, that is, the positioning frame 1 is placed with the side of the first avoiding space 13 downward, and the side of the second avoiding space 14 upward.

[0041] Referring to Figures 1-5 The pin shaft dismounting device provided by the utility model embodiment comprises a positioning frame 1 and a pushing assembly 2.

[0042] The pushing assembly 2 is arranged at the first end of the positioning frame 1 and can move along the length direction of the positioning frame 1, towards or away from the second end of the positioning frame 1, so as to dismount and / or assemble the pin shaft 5. The second end is arranged opposite to the first end. The second end of the positioning frame 1 is provided with a positioning part for positioning the pin shaft 5, so that the distal end of the pushing assembly 2 is aligned with the pin shaft 5. It is to be supplemented that, referring to Figure 1 the orientation of the positioning frame 1, the distal end of the pushing assembly 2 can push the pin shaft 5 to the right to make the pin shaft 5 disengage or insert the mechanism through the pin shaft 5.

[0043] The pin shaft dismounting device is used for positioning the pin shaft 5 through the positioning part of the positioning frame 1, and then moving the push assembly 2 towards the second end of the positioning frame 1, so that the distal end of the push assembly 2 is aligned with and pushes the pin shaft 5 to be separated from or inserted into the mechanism through which the pin shaft 5 is arranged, so as to quickly and accurately dismount or mount the pin shaft 5, and ensure the stability and safety during replacement, and avoid blind operation and unnecessary damage during dismounting by using a screwdriver. Meanwhile, the pin shaft dismounting device has strong universality, can quickly and conveniently dismount the pin shaft 5 on different mechanisms under different working conditions and dismount and mount pin shafts 5 of different specifications and models, is especially suitable for use under working conditions where it is inconvenient to operate in a small space, is convenient for maintenance personnel to use, and has good popularization effect. Meanwhile, the pin shaft dismounting device can simultaneously mount and dismount the pin shaft 5, without the need to replace the mounting and dismounting tools, simplifies the operation steps, and improves the work efficiency.

[0044] Preferably, the pin shaft dismounting device is used for dismounting the pin shaft 5 arranged through the gear 3 and the gear shaft 4 in the hydraulic spring energy storage mechanism and / or mounting the pin shaft 5 on the gear 3 and the gear shaft 4 in the hydraulic spring energy storage mechanism. It should be noted that the gear 3 is sleeved on the gear shaft 4, and the pin shaft 5 is arranged in the insertion hole A of the gear 3 and the gear shaft 4 to position the gear 3.

[0045] When the pin shaft dismounting device is used for dismounting the pin shaft 5 arranged through the gear 3 in the hydraulic spring energy storage mechanism, only the butterfly spring above the gear 3 and the motor on one side of the gear 3 need to be dismounted, and then the pin shaft dismounting device can be inserted into one side of the gear 3 from the exposed space. Since only the motor and the butterfly spring need to be dismounted when the pin shaft dismounting device is used, the number of dismounted parts is small, the dismounting efficiency and safety can be effectively improved, the power-off time can be effectively shortened or even no power-off operation is needed, and the operation of urban rail transit is not affected during maintenance of the hydraulic spring energy storage mechanism in the rail transit electrical equipment.

[0046] In use, the positioning part of the positioning frame 1 positions the pin shaft 5, and then the push assembly 2 dismounts the pin shaft 5 from the gear shaft 4 and the damaged gear 3 or mounts the pin shaft 5 on the gear shaft 4 and the replaced gear 3.

[0047] Further, the positioning part includes a first arc-shaped groove 11 with an opening facing the first end, and the first arc-shaped groove 11 can abut against the gear 3 through which the pin shaft 5 is arranged.

[0048] When the first arc-shaped groove 11 abuts against the gear 3, the disassembly position of the pin shaft 5 can be positioned, and the distal end of the pushing assembly 2 can be aligned with the pin shaft 5. During the process that the pushing assembly 2 pushes the pin shaft 5 away from or inserts the pin shaft 5 into the insertion hole A of the gear 3, the first arc-shaped groove 11 can provide a reaction force to the gear 3 to support the gear 3 and avoid displacement and deformation of the gear 3. Thus, the first arc-shaped groove 11 of the positioning frame 1 can quickly position the gear 3 and then position the disassembly position of the pin shaft 5, so that the pushing assembly 2 can quickly and accurately disassemble or assemble the pin shaft 5, while ensuring the operation stability during the disassembly or assembly process.

[0049] It is further explained that the positioning frame 1 can rotate relative to the gear 3 to align the distal end of the pushing assembly 2 with the insertion hole A of the gear 3 to align the pin.

[0050] Preferably, the positioning part further comprises a second arc-shaped groove 12 which is open towards the first end and can abut against the gear shaft 4 through which the pin shaft 5 passes. The first arc-shaped groove 11 and the second arc-shaped groove 12 form a space 15 between the opposite sides of the first arc-shaped groove 11 and the second arc-shaped groove 12 for the pin shaft 5 to be separated from the gear 3 and the gear shaft 4.

[0051] In use, the first arc-shaped groove 11 of the positioning frame 1 can abut against the gear 3, and the second arc-shaped groove 12 can abut against the gear shaft 4 to position the disassembly position of the pin shaft 5. During the process that the pushing assembly 2 pushes the pin shaft 5 away from or inserts the pin shaft 5 into the insertion hole A of the gear 3 and the gear shaft 4, the first arc-shaped groove 11 and the second arc-shaped groove 12 can simultaneously provide a reaction force to the gear 3 to further support the gear 3 and avoid displacement and deformation of the gear 3.

[0052] More preferably, the first arc-shaped groove 11 can abut against the gear boss 32 of the gear 3. The space 15 can also accommodate the outer edge of the gear body 31 of the gear 3. The gear 3 comprises the gear body 31 and the gear boss 32 on the end face of the gear body 31.

[0053] A first avoiding space 13 is arranged between the first end of the positioning frame 1 and the first arc-shaped groove 11 to accommodate the gear body 31 and the gear boss 32. A second avoiding space 14 is arranged between the first end of the positioning frame 1 and the second arc-shaped groove 12 to accommodate the gear shaft 4.

[0054] When disassembling or assembling the pin shaft 5, referring to Figure 4 and 5The positioning frame 1 is placed with the side of the first avoiding space 13 downward and the side of the second avoiding space 14 upward, and the positioning frame 1 is moved downward from above the gear 3 and the gear shaft 4 penetrating the pin shaft 5 to the first avoiding space 13 of the positioning frame 1, the gear body 31 and the gear boss 32 are sleeved and accommodated in the first avoiding space 13, and the second avoiding space 14 is sleeved and accommodated in the gear shaft 4. Then, the positioning frame 1 is pulled to the direction of the first end of the positioning frame 1, so that the first arc-shaped groove 11 abuts against the gear boss 32, the second arc-shaped groove 12 abuts against the gear shaft 4, and the outer edge of the gear body 31 extends into and is accommodated in the space 15, so as to clamp the gear 3 and the gear shaft 4 and position the pin shaft 5, and the pin shaft 5 is disassembled by the pushing assembly 2. After the pin shaft 5 is disassembled, the positioning frame 1 is pushed to the direction of the second end of the positioning frame 1, so that the first arc-shaped groove 11 is separated from the gear boss 32, the second arc-shaped groove 12 is separated from the gear shaft 4, and the outer edge of the gear body 31 is separated from the space 15, so that the positioning frame 1 can be separated upward from the gear 3 and the gear shaft 4.

[0055] Further, the pushing assembly 2 comprises a threaded rod 21 and a pulley ejector pin 22.

[0056] The threaded rod 21 is threadedly connected to the first end of the positioning frame 1, and the distal end of the threaded rod 21 is provided with a slot 211. The pulley ejector pin 22 comprises a pulley 221 and an ejector pin 222, the pulley 221 is fixed to the proximal end of the ejector pin 222 and is inserted into the slot 211, and the distal end of the ejector pin 222 can be aligned with one end of the pin shaft 5.

[0057] When the threaded rod 21 rotates relative to the positioning frame 1, the slot 211 of the threaded rod 21 can drive the pulley 221 to rotate relative to the ejector pin 222, so as to avoid the rotation of the ejector pin 222 with the threaded rod 21 and reduce the friction loss of the ejector pin 222, and the threaded rod 21 can also drive the pulley ejector pin 22 as a whole to move towards or away from the second end of the positioning frame 1, and when the pulley ejector pin 22 as a whole moves towards the second end of the positioning frame 1, the ejector pin 222 can push the pin shaft 5 along the axial direction of the pin shaft 5 to disassemble the pin shaft 5.

[0058] Therefore, after the positioning frame 1 positions the pin shaft 5, the threaded rod 21 can be rotated to disassemble the pin shaft 5, which is simple in operation and saves time and labor. The pulley 221 is rotationally connected to the proximal end of the ejector pin 222 and is inserted into the slot 211, so as to ensure that the threaded rod 21 and the ejector pin 222 are coaxial and the ejector pin 222 is not deflected, and the coaxial precision of the threaded rod 21, the ejector pin 222 and the pin shaft 5 is ensured by cooperating with the ejector pin 222 which can be aligned with the pin shaft 5, so as to ensure that the ejector pin 222 pushes the pin shaft 5 along the axial direction of the pin shaft 5, and then ensure the disassembly precision of the pin shaft 5 when the ejector pin 222 pushes the pin shaft 5.

[0059] It should be noted that when the present disassembling device is used to disassemble the pin shaft 5 which is simultaneously arranged on the gear 3 and the gear shaft 4, the pin shaft 5 can be disassembled after the first arc-shaped groove 11 abuts against the gear boss 32, or after the first arc-shaped groove 11 abuts against the gear boss 32 and the second arc-shaped groove 12 abuts against the positioning pin shaft 5 of the gear shaft 4, and then the pulley 221 of the pulley ejector pin 22 is inserted into the insertion slot 211 at the proximal end of the threaded rod 21 and the ejector pin 22 is aligned with the pin shaft 5. In this way, the pulley ejector pin 22 is prevented from colliding with the gear body 31 and the gear shaft 4 during the process of positioning the gear 3 by the positioning frame 1.

[0060] Preferably, when the pin shaft 5 is a spring pin shaft, the pin shaft 5 is through at both ends, and the distal end of the ejector pin 222 has a needle tip 2221 which can be embedded in one end of the pin shaft 5, so that the ejector pin 222 can stably clamp the pin shaft 5 and prevent the pin shaft 5 from being deflected and displaced when the pin shaft 5 is pushed, thereby ensuring the positioning accuracy and further improving the disassembly accuracy of the pin shaft 5.

[0061] It should be noted that the needle tip 2221 can be processed into different shapes to be embedded in one end of the different-shaped bolt, thereby improving the applicability of the present pin shaft disassembling device.

[0062] Preferably, the diameter of the ejector pin 222 is less than or equal to the diameter of the pin shaft 5. When the pin shaft disassembling device is used to disassemble the pin shaft 5 which is simultaneously arranged on the gear boss 32 and the gear shaft 4, the ejector pin 222 can be inserted into the insertion hole A of the gear boss 32 and the gear shaft 4 to completely push out the pin shaft 5.

[0063] It should be noted that the ejector pin 222 has multiple specifications. Since the stroke of the ejector pin 222 for pushing the pin shaft 5 to completely separate from the gear boss 32 and the gear shaft 4 is greater than the stroke of the ejector pin 222 for pushing the pin shaft 5 while simultaneously inserting the pin shaft 5 into the gear boss 32 and the gear shaft 4, the length of the ejector pin 222 used for disassembling the pin shaft 5 is greater than the length of the ejector pin 222 used for assembling the pin shaft 5.

[0064] Preferably, the proximal end of the threaded rod 21 is fixedly connected with a rotating rod 212, and the rotating rod 212 is perpendicular to the threaded rod 21.

[0065] In use, the threaded rod 21 can be rotated by the rotating rod 212, thereby improving the operation convenience.

[0066] Preferably, the pulley ejector pin 22 is made of tungsten steel, thereby improving the durability.

[0067] Preferably, when the pin shaft disassembling device is used to disassemble the pin shaft 5 which is arranged on the gear 3 of the hydraulic spring energy storage mechanism, the pin shaft disassembling device further comprises a camera and a display.

[0068] The camera and the display are connected, the camera can be extended to one side of the gear 3 and shoot the image around the gear 3 by the space exposed by the butterfly spring above the gear 3 and the motor on one side of the gear 3, and the operator can intuitively observe the image around the gear 3 through the display so as to position the pin shaft 5 by the positioning frame 1 of the pin shaft dismounting device and align the pin shaft 5 by the pushing assembly 2, thereby reducing the operation difficulty of the visual blind area and improving the dismounting precision of the pin shaft 5.

[0069] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0071] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or features of the embodiments described in the present application without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A pin dismounting device, characterized in that The device comprises a positioning frame (1) and a pushing assembly (2); The pushing assembly (2) is arranged at the first end of the positioning frame (1) and can move along the length direction of the positioning frame (1) towards or away from the second end of the positioning frame (1) to disassemble and / or assemble the pin shaft (5); the second end is arranged opposite to the first end; The second end of the positioning frame (1) is provided with a positioning part for positioning the pin shaft (5) so that the distal end of the pushing assembly (2) is aligned with the pin shaft (5); The positioning part comprises a first arc-shaped groove (11) opening towards the first end, which can abut against the gear (3) passing through the pin shaft (5); The positioning part further comprises a second arc-shaped groove (12) opening towards the first end, which can abut against the gear shaft (4) passing through the pin shaft (5); The first arc-shaped groove (11) and the opposite side of the first arc-shaped groove (11) form a space (15) for the pin shaft (5) to disengage from the gear (3) and the gear shaft (4); The first arc-shaped groove (11) can abut against the gear boss (32) of the gear (3), and the space (15) can also accommodate the outer edge of the gear body (31) of the gear (3); A first avoiding space (13) is arranged between the first end of the positioning frame (1) and the first arc-shaped groove (11) to accommodate the gear body (31) and the gear boss (32); A second avoiding space (14) is arranged between the first end of the positioning frame (1) and the second arc-shaped groove (12) to accommodate the gear shaft (4).

2. The pin removal device of claim 1, wherein, The pushing assembly (2) comprises a threaded rod (21) and a pulley ejector pin (22); The threaded rod (21) can be threadedly connected at the first end of the positioning frame (1), and the distal end of the threaded rod (21) is provided with a slot (211); The pulley ejector pin (22) comprises a pulley (221) and an ejector pin (222), the pulley (221) is rotationally connected to the proximal end of the ejector pin (222) and inserted into the slot (211), and the distal end of the ejector pin (222) can be aligned with one end of the pin shaft (5); When the threaded rod (21) rotates relative to the positioning frame (1), the threaded rod (21) can drive the pulley (221) to rotate relative to the ejector pin (222), and can drive the pulley ejector pin (22) to move as a whole towards or away from the second end of the positioning frame (1), and the ejector pin (222) can push the pin shaft (5) to disassemble and / or assemble the pin shaft (5).

3. The pin removal device of claim 2, wherein, The distal end of the ejector pin (222) has a needle tip (2221) capable of being embedded in one end of the pin shaft (5).

4. The pin removal device of claim 3, wherein, The diameter of the ejector pin (222) is less than or equal to the diameter of the pin shaft (5).

5. The pin removal device of claim 2, wherein, The proximal end of the threaded rod (21) is fixedly connected with a rotating rod (212), and the rotating rod (212) is perpendicular to the threaded rod (21).

6. A pin removal device according to any one of claims 1-5, characterized in that The pin shaft dismounting device is used for dismounting and / or mounting a pin shaft (5) in a hydraulic spring energy storage mechanism.

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