Pin pulling device

Abstract

The pin pulling device comprises a base, a crowbar and a fixing part, the base comprises a binding face and a supporting face opposite to the binding face, the binding face is used for making contact with the surface of a workpiece during pin pulling, a warping plate is arranged on the supporting face, the warping plate is perpendicular to the supporting face and provided with a through hole penetrating in the first direction, and the crowbar is arranged in the through hole; the axis of the penetrating hole is parallel to the supporting face, the crowbar penetrates through the penetrating hole and can vertically swing relative to the base, the fixing piece is used for being connected with the pin shaft, and the crowbar is connected with the fixing piece. The pin pulling device is simple in structure, convenient to operate, unlimited in operation space and high in safety.

Description

Technical Field

[0001] The invention relates to the technical field of pin removal equipment, and in particular to a pin removal device. Background Art

[0002] Some parts with shells need to frequently replace the locating pins on the shells due to changes in the development status, so a pin pulling device is needed. Existing common pin pulling devices include manual hammer type and hydraulic type. Among them, the manual hammer type is suitable for fixing pins under static pressure. The hammer pulling force is large and the operating space is sufficient. For example, when used on the hydraulic support connecting pin shaft, because the pin shaft is less stressed and tight, the hammer pulling force is too large and it will be directly pulled out and fall off, which may easily hurt people. The hydraulic pin puller is complicated and bulky to operate, and the operating space is limited. Summary of the invention

[0003] The technical problem to be solved by the present invention is to propose a pin pulling device in view of the defects and shortcomings of the prior art. The pin pulling device has a simple structure, is easy to operate, has no limited operating space, and is highly safe.

[0004] The pin pulling device of the embodiment of the present invention includes: a base, the base includes a fitting surface and a supporting surface opposite to the fitting surface, the fitting surface is used to contact the surface of the workpiece when pulling the pin, a seesaw is provided on the supporting surface, the seesaw is perpendicular to the supporting surface and the seesaw is provided with a through hole passing through in a first direction, and the axis of the through hole is parallel to the supporting surface; a crowbar and a fixing piece, the crowbar is inserted through the through hole and can swing up and down relative to the base, the fixing piece is used to be connected to the pin shaft, and the crowbar is connected to the fixing piece.

[0005] The pin pulling device of the embodiment of the present invention has a seesaw plate vertically arranged on the base, a through hole is provided on the seesaw plate, and a crowbar connected to a fixing part passes through the through hole on the seesaw plate. Therefore, after the fixing part is connected to the pin shaft, the crowbar can be pressed down to lift and pull out the pin shaft with the seesaw plate as a fulcrum. The structure is simple, the operation is convenient, and the operating space is not limited.

[0006] In some embodiments, the through holes are multiple and spaced apart from each other in a direction away from the base.

[0007] In some embodiments, the plurality of perforations are arranged in a plurality of rows in a second direction, and the second direction is perpendicular to a length direction of the seesaw.

[0008] In some embodiments, the fixing member includes a connecting head and a connecting rod, one end of the connecting rod is used to connect the pin shaft, the other end of the connecting part is detachably connected to the connecting head, and the connecting head is connected to the crowbar.

[0009] In some embodiments, the connecting head is threadably matched with the connecting rod.

[0010] In some embodiments, the connecting head is movably connected to the crowbar.

[0011] In some embodiments, the connector is a ring body, and the crowbar is inserted into the inner ring hole of the ring body.

[0012] In some embodiments, the crowbar includes a first end and a second end in its length direction, the first end includes a bending section, and the connecting head is located on a side of the bending section facing the second end.

[0013] In some embodiments, the second end is provided with an anti-slip thread.

[0014] In some embodiments, at least two of the plurality of through-holes have different hole diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a pin pulling device according to an embodiment of the present invention.

[0016] Figure 2 It is a schematic structural diagram of a fixing member of a pin pulling device according to an embodiment of the present invention.

[0017] Reference numerals:

[0018] Base 1, rocker 2, through hole 21, fixing piece 3, connecting head 31, connecting rod 32, crowbar 4, pin 5. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] like Figure 1 As shown, the pin pulling device according to the embodiment of the present invention comprises a base 1 , a crowbar 4 and a fixing member 3 .

[0021] Specifically, the base 1 includes a fitting surface and a supporting surface opposite to the fitting surface, the fitting surface is used to contact the surface of the workpiece when pulling out the pin, a seesaw 2 is provided on the supporting surface, the seesaw 2 is perpendicular to the supporting surface and the seesaw 2 is provided with a through hole 21 passing through along a first direction, the axis of the through hole 21 is parallel to the supporting surface, the crowbar 4 is passed through the through hole 21 and can swing up and down relative to the base 1, the fixing part 3 is used to be connected to the pin shaft 5, and the crowbar 4 is connected to the fixing part 3.

[0022] It can be understood that when using the pin pulling device of the present application to pull pins, the base 1 can be placed against the workpiece, and then the fixing part 3 can be connected to the pin shaft 5 on the workpiece. The operator can hold the crowbar 4 and use the rocker 2 as a fulcrum to pull the pin shaft 5 outward to achieve the pin pulling operation.

[0023] In the pin pulling device of the embodiment of the present invention, a seesaw 2 is vertically arranged on a base 1, a through hole 21 is provided on the seesaw 2, and a crowbar 4 connected with a fixing member 3 passes through the through hole 21 on the seesaw 2. Therefore, after the fixing member 3 is connected to the pin shaft 5, the crowbar 4 can be pressed down to lift and pull out the pin shaft 5 with the seesaw 2 as a fulcrum. The structure is simple, the operation is convenient, and the operating space is not limited.

[0024] Furthermore, if Figure 1 As shown, the through holes 21 are arranged in a plurality of intervals in a direction away from the base 1. It should be noted that, as the pin 5 is pulled out more, the travel of the crowbar 4 around a single fulcrum will reach a limit, and at this time, the crowbar 4 can be moved to other through holes 21 according to needs to continue the operation. For example, in the initial stage of operation, the crowbar 4 can be passed through the innermost through hole 21, and after being rotated and pulled out a certain distance, the crowbar 4 can be moved outward and passed through the relatively outer through hole 21, and then the pin 5 can be pried.

[0025] Furthermore, the plurality of perforations 21 are arranged in a plurality of rows in the second direction, and the second direction is perpendicular to the length direction of the seesaw 2. In other words, the perforations 21 can be arranged in a plurality of rows and columns, and considering the uncertainty of a specific working environment, the perforations 21 can be arranged in a plurality of rows and columns, and the perforations 21 with appropriate positions can be selected as the rotation fulcrum positions of the crowbar 4 according to the needs, so that the application is more flexible.

[0026] In some embodiments, the fixing member 3 includes a connecting head 31 and a connecting rod 32, one end of the connecting rod 32 is used to connect the pin 5, and the other end of the connecting portion is detachably connected to the connecting head 31, and the connecting head 31 is connected to the crowbar 4. It can be understood that the pin 5 has various models, and different pins 5 need to match connecting rods 32 of different diameters. The present application constructs the connecting rod 32 and the connecting head 31 as a detachable connection structure. When pulling out the pins 5 of different models, it is only necessary to change the size of the connecting rod 32, and there is no need to redesign or replace the fixing member 3 as a whole, thereby saving costs.

[0027] Preferably, the connector 31 is threadedly matched with the connecting rod 32. Specifically, a threaded hole extending inward may be provided at the end of the connecting rod 32, and a boss with a threaded hole may be provided at the connector 31, and the boss is screwed into the threaded hole to realize the assembly of the connecting rod 32 and the connector 31, so that the connection is reliable, stable, and easy to disassemble.

[0028] Further, the connector 31 is movably connected to the crowbar 4. It is understandable that the movement of the crowbar 4 is rotational, while the movement of the pin 5 is linear. By movably connecting the connector 31 and the crowbar 4, it can be ensured that the rotation of the crowbar 4 will not cause the fixing member 3 to be stuck.

[0029] Preferably, the connector 31 is a ring body, and the crowbar 4 is inserted into the inner ring hole of the ring body. By setting the connector 31 as a ring body, the crowbar 4 and the connector 31 are inserted and matched, which is convenient for the disassembly and assembly of the two, and can provide sufficient rotational freedom for the crowbar 4 to avoid getting stuck.

[0030] In some embodiments, the crowbar 4 includes a first end and a second end in its length direction, the first end includes a bent section, and the connector 31 is located on the side of the bent section facing the second end. Thus, the bent section can be used as a limiting structure to prevent the crowbar 4 from slipping abnormally ("abnormal slipping" here can be understood as slipping under non-human operation).

[0031] Preferably, the second end is provided with an anti-skid thread. The second end of the crowbar 4 is the position where the human hand holds, and the anti-skid thread is provided at this position to facilitate the operator to apply force and avoid safety hazards caused by slipping hands.

[0032] Furthermore, at least two of the multiple through-holes 21 have different apertures. In other words, the multiple through-holes 21 include multiple holes with different apertures. Since the preload force of the pin 5 is different in different application environments, when pulling out the pin 5 with a large preload force, a higher structural strength requirement is placed on the crowbar 4. At this time, a crowbar 4 with a larger diameter may need to be used. Correspondingly, the diameter of the through-hole 21 should also be larger to meet the assembly requirements. Otherwise, the diameter of the through-hole 21 should be smaller. Therefore, by constructing through-holes 21 with different diameters on the seesaw 2, crowbars 4 of different thicknesses can be flexibly applied, thereby meeting the pulling out requirements of the pin 5 with different preload forces.

[0033] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A pin pulling device, characterized in that: include: A base, the base comprising a fitting surface and a supporting surface opposite to the fitting surface, the fitting surface being used to contact the surface of the workpiece when pulling out the pin, a seesaw being provided on the supporting surface, the seesaw being perpendicular to the supporting surface and the seesaw being provided with a through hole penetrating along a first direction, the axis of the through hole being parallel to the supporting surface; A crowbar and a fixing piece, wherein the crowbar is inserted through the through hole and can swing up and down relative to the base, the fixing piece is used to be connected to a pin shaft, and the crowbar is connected to the fixing piece.

2. The pin pulling device according to claim 1, characterized in that: The through holes are multiple and arranged at intervals in a direction away from the base.

3. The pin pulling device according to claim 3, characterized in that: The plurality of through holes are arranged in a plurality of rows in a second direction, and the second direction is perpendicular to a length direction of the seesaw.

4. The pin pulling device according to claim 1, characterized in that: The fixing member comprises a connecting head and a connecting rod, one end of the connecting rod is used to connect the pin shaft, the other end of the connecting part is detachably connected to the connecting head, and the connecting head is connected to the crowbar.

5. The pin pulling device according to claim 4, characterized in that: The connecting head is threadably matched with the connecting rod.

6. The pin pulling device according to claim 4, characterized in that: The connecting head is movably connected to the crowbar.

7. The pin pulling device according to claim 4, characterized in that: The connecting head is a ring body, and the crowbar is inserted into the inner ring hole of the ring body.

8. The pin pulling device according to claim 7, characterized in that: The crowbar comprises a first end and a second end in the length direction thereof, the first end comprises a bending section, and the connecting head is located on a side of the bending section facing the second end.

9. The pin pulling device according to claim 8, characterized in that: The second end is provided with an anti-slip thread.

10. The pin pulling device according to claim 2, characterized in that: Among the plurality of through holes, at least two of the through holes have different hole diameters.

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