A standardized installation device for a cotter pin

Abstract

The present invention discloses a standardized installation device for a cotter pin, comprising an open tail module, a fixing module, a first handle and a second handle; the first handle and the second handle are cross-symmetrically distributed; the open tail module is provided at the top of the first handle; the fixing module is provided at the top of the second handle; the front side of the right end of the open tail module is provided with a cotter pin short tail guide groove that is gradually tilted backward from left to right; the right end of the open tail module is provided with a cotter pin long tail guide hole; the cotter pin long tail guide hole is used to place the cotter pin long tail side of the cotter pin; the cotter pin short tail guide groove is used to place the cotter pin short tail side; the fixing module is provided with a cotter pin fixing groove at the upper part of the inner end facing the open tail module; the cotter pin fixing groove is used to place the cotter pin head. The standardized installation device for a cotter pin disclosed by the present invention is used in the installation operation of the cotter pin, can conveniently and reliably install the cotter pin, and significantly improves the installation efficiency of the cotter pin.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, in particular to a standardized installation device for a cotter pin. Background Art

[0002] A cotter pin is a piece of metal hardware, such as Figure 1 As shown, it can be used to prevent threaded connections from loosening or shaft parts from falling out. For threaded connections, after tightening the nut, insert a cotter pin into the hole between the nut slot and the bolt tail, and then bend the tail of the cotter pin apart to prevent relative rotation between the nut and bolt. For shaft parts, place a flat washer on the shaft, then insert the cotter pin into the hole at the shaft tail and bend the tail of the cotter pin apart to prevent the shaft from shifting or falling out. Cotter pins are a simple, economical, and practical anti-loosening hardware.

[0003] However, the existing cotter pins have problems with low installation efficiency during installation because the cotter pins are easy to rotate on the fixed parts (such as shaft parts), and the tail of the cotter pin is difficult to open, which seriously affects the installation efficiency and increases the labor intensity of the staff. Summary of the Invention

[0004] The purpose of the present invention is to provide a standardized installation device for a cotter pin in view of the technical defects in the prior art.

[0005] To this end, the present invention provides a standardized installation device for a cotter pin, comprising a tail opening module, a fixing module, a first handle and a second handle;

[0006] The first handle and the second handle are cross-symmetrically distributed;

[0007] An open tail module is provided at the top of the first handle;

[0008] A fixing module is provided at the top end of the second handle;

[0009] The open tail module and the fixed module protrude from the inner sides of the first handle and the second handle respectively;

[0010] The front side of the right end of the open tail module is a plane inclined backward;

[0011] On the front right end of the split tail module, there is a split pin short tail guide groove that is gradually tilted backward from left to right;

[0012] The right end of the open tail module is provided with a long tail guide hole for the cotter pin;

[0013] The opening of the long tail guide hole of the cotter pin faces the direction of the fixed module;

[0014] A cotter pin long tail guide hole is used for accommodating the cotter pin long tail side of the cotter pin;

[0015] A cotter pin short tail guide groove is used for accommodating the cotter pin short tail side of the cotter pin;

[0016] The fixing module is provided with a split pin fixing groove at the upper portion of the inner end facing the open tail module;

[0017] The side of the split pin fixing slot facing the split tail module is open;

[0018] a cotter pin fixing groove for receiving a cotter pin head;

[0019] A notch is provided on the rear right side of the open-tail module;

[0020] The right side of the notch is directly connected to the long tail guide hole of the cotter pin;

[0021] The notch is used to allow the end of the long tail side of the cotter pin to slide along the front side wall of the notch after the long tail side of the cotter pin is inserted into the long tail guide hole of the cotter pin;

[0022] The short tail guide groove of the cotter pin and the front side wall of the notch are arranged in front and back correspondence.

[0023] Preferably, the short tail guide groove of the cotter pin is an arc-shaped groove, and is symmetrically distributed on the upper and lower sides;

[0024] The shape of the long tail guide hole of the cotter pin is cylindrical;

[0025] The shape of the cotter pin fixing groove is an elliptical cylinder;

[0026] The angle between the front side wall of the notch and the groove wall of the cotter pin short tail guide groove is 60°;

[0027] The angle between the front side wall of the notch and the right side wall of the notch is 60°;

[0028] The longitudinal distance between the front side wall of the notch and the cotter pin short tail guide groove gradually decreases from left to right.

[0029] Preferably, the top of the cotter pin fixing groove is provided with an opening for allowing the cotter pin head to enter and exit;

[0030] The width of the top opening of the split pin fixing groove is smaller than the length of the major axis of the split pin fixing groove;

[0031] The top of the split pin fixing slot is open and is located in the middle of the top.

[0032] Preferably, the upper portions of the first handle and the second handle are respectively provided with a first circular cross hinge portion and a second circular cross hinge portion;

[0033] The first circular cross hinge portion and the second circular cross hinge portion are parallel to each other and have the same shape and size;

[0034] a first circular cross hinge portion, located in front of the second circular cross hinge portion;

[0035] The first circular cross hinge portion of the first handle and the second circular cross hinge portion of the second handle are hingedly connected via a longitudinally distributed handle fixing pin.

[0036] Preferably, a handle fixing pin mounting hole is provided at the center of the first circular cross hinge portion of the first handle and the second circular cross hinge portion of the second handle respectively;

[0037] The front and rear ends of the handle fixing pin shaft are connected to the two handle fixing pin mounting holes.

[0038] Preferably, a handle inner spring mounting hole is provided on the side opposite to the second handle, respectively, on the lower side of the first circular cross hinge portion and the second circular cross hinge portion;

[0039] The two ends of the spiral cylindrical spring are respectively arranged in the spring mounting holes on the inner sides of the two handles.

[0040] Preferably, the first handle is provided with a first handle lower limit platform and a first handle upper limit platform on the left and right sides of the first circular cross hinge portion respectively;

[0041] The second handle is provided with a second handle lower limit platform and a second handle upper limit platform on the left and right sides of the second circular cross hinge portion respectively;

[0042] The first handle lower limiting platform and the first handle upper limiting platform on the first handle are symmetrically distributed with the second handle lower limiting platform and the second handle upper limiting platform on the second handle respectively.

[0043] Preferably, a front end cylinder of the first handle is vertically arranged at the center of the top end of the first handle;

[0044] The front end cylinder of the first handle is penetrated by a longitudinally distributed first handle module connecting pin shaft mounting hole;

[0045] The open tail module is provided with a vertically distributed first handle front end cylindrical mounting hole;

[0046] A longitudinally distributed open tail module pin shaft mounting hole is respectively provided at the front and rear ends of the open tail module;

[0047] The two open-end module pin shaft mounting holes are connected to the cylindrical mounting hole at the front end of the first handle;

[0048] The front end cylinder of the first handle is inserted into the front end cylindrical mounting hole of the first handle;

[0049] The open tail module is fastened to the front end cylinder of the first handle through the first module connecting pin, and the first module connecting pin passes through the corresponding open tail module pin mounting hole and the first handle module connecting pin mounting hole in sequence;

[0050] The cotter pin short tail guide groove is located on the right side of the cotter pin shaft mounting hole.

[0051] Preferably, a front end cylinder of the second handle is vertically arranged at the center of the top end of the second handle;

[0052] The front end cylinder of the second handle is penetrated by a longitudinally distributed second handle module connecting pin shaft mounting hole;

[0053] The fixing module is provided with vertically distributed cylindrical mounting holes at the front end of the second handle;

[0054] A longitudinally distributed fixing module pin shaft mounting hole is respectively provided through the front and rear ends of the fixing module;

[0055] The two fixing module pin shaft mounting holes are connected to the cylindrical mounting hole at the front end of the second handle;

[0056] The front end cylinder of the second handle is inserted into the front end cylindrical mounting hole of the second handle;

[0057] The fixing module is fastened to the front end cylinder of the second handle through the second module connecting pin, and the second module connecting pin passes through the corresponding fixing module pin mounting hole and the second handle module connecting pin mounting hole in sequence.

[0058] Preferably, the height of the front end cylinder of the first handle is equal to the thickness of the open tail module;

[0059] The height of the cylinder at the front end of the second handle is equal to the thickness of the fixed module;

[0060] The lower portion of the first handle and the second handle is a handle end;

[0061] The lower outer surfaces of the first handle and the second handle are respectively covered with a first protective cover and a second protective cover.

[0062] It can be seen from the technical solution provided by the present invention that, compared with the prior art, the present invention provides a standardized installation device for a cotter pin, which has a scientific structural design and is used in the installation operation of the cotter pin. It can effectively solve the problem of low installation efficiency due to the easy rotation of the cotter pin on the fixed part, and the problem that the tail of the cotter pin is difficult to open. It can install the cotter pin conveniently and reliably, significantly improve the installation efficiency of the cotter pin, reduce the labor intensity of the staff, and has important practical significance.

[0063] For ease of use, the present invention is designed as a handheld device. After verification, it has been shown to be capable of accommodating the installation of cotter pins of varying sizes. This effectively addresses the issues currently encountered with various cotter pins, such as low installation efficiency caused by the cotter pin rotating on the fixed component during installation, as well as issues such as inconvenience in opening the tail, inconsistent angles after opening, and movement of the cotter pin on the fixed component (i.e., shaft or bolt) after opening the tail. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a structural schematic diagram of an existing cotter pin, which is a cotter pin required to be installed by the standardized cotter pin installation device provided by the present invention;

[0065] Figure 2 A front view of a standardized installation device for a cotter pin provided by the present invention;

[0066] Figure 3 A schematic diagram of the three-dimensional structure of a standardized installation device for a cotter pin provided by the present invention;

[0067] Figure 4 A schematic diagram of the three-dimensional structure of a standardized installation device for a cotter pin provided by the present invention, showing a working state of the device when installing a cotter pin;

[0068] Figure 5a This is a schematic diagram of the three-dimensional structure of a first handle provided in a standardized installation device for a cotter pin provided by the present invention;

[0069] Figure 5b A schematic diagram of the three-dimensional structure of a second handle provided in a standardized installation device for a cotter pin provided by the present invention;

[0070] Figure 6 A schematic diagram of the three-dimensional structure of a first embodiment of a fixing module provided in a standardized installation device for a cotter pin provided by the present invention;

[0071] Figure 7 A schematic diagram of the three-dimensional structure of a second embodiment of a fixing module provided in a standardized installation device for a cotter pin provided by the present invention;

[0072] Figure 8 A schematic diagram of the three-dimensional structure of a split tail module provided in a standardized installation device for split pins provided by the present invention;

[0073] Figure 9 A top view of a split-end module provided in a standardized installation device for split pins provided by the present invention;

[0074] Figure 10A schematic diagram of the three-dimensional structure of a standardized installation device for a cotter pin provided by the present invention, showing the working state when performing an installation operation (specifically, a pulling operation) on a cotter pin on a fixed shaft of a device;

[0075] In the figure: 1-fixed module; 2-open tail module; 301-first module connecting pin; 302-second module connecting pin; 4-first handle; 5-handle pin;

[0076] 6 - helical cylindrical spring; 7 - second protective sleeve 2; 8 - first protective sleeve; 9 - second handle; 10 - cotter pin (i.e., mounted component); 11 - fixed shaft;

[0077] 101- split pin fixing slot; 201- split pin long tail guide hole; 202- split pin short tail guide slot;

[0078] 203- cylindrical mounting hole at the front end of the first handle;

[0079] 401 - first handle module connecting pin mounting hole; 402 - first handle front end cylinder;

[0080] 901 - Mounting hole for the connecting pin of the second handle module; 902 - Front end cylinder of the second handle;

[0081] 103-cylindrical mounting hole at the front end of the second handle;

[0082] 404-lower limit platform of the first handle; 405-upper limit platform of the second handle;

[0083] 904-lower limit platform of the second handle; 905-upper limit platform of the first handle;

[0084] 501-handle fixing pin installation hole; 601-handle inner spring installation hole;

[0085] 1001-cotter pin head; 1002-cotter pin long tail side; 1003-cotter pin short tail side;

[0086] 10010-Fixed module pin installation hole; 2001-Open tail module pin installation hole. DETAILED DESCRIPTION

[0087] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0088] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0089] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0090] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0091] See also Figures 1 to 10 , the present invention provides a standardized installation device for a cotter pin, comprising an opening module 2, a fixing module 1, a first handle 4 and a second handle 9;

[0092] The first handle 4 and the second handle 9 are cross-symmetrically distributed, forming a cross handle together;

[0093] The top of the first handle 4 is provided with an open tail module 2;

[0094] A fixing module 1 is provided at the top of the second handle 9;

[0095] The tail opening module 2 and the fixing module 1 protrude from the inner sides of the first handle 4 and the second handle 9 respectively;

[0096] The front side of the right end of the open tail module 2 is a plane inclined backward;

[0097] On the front right side of the split tail module 2, there is a split pin short tail guide groove 202 (a groove concave backward) which is gradually tilted from left to right.

[0098] The right end of the split tail module 2 is provided with a split pin long tail guide hole 201;

[0099] The opening of the cotter pin long tail guide hole 201 faces the direction of the fixed module 1;

[0100] The cotter pin long tail guide hole 201 is used to place the cotter pin long tail side 1002 of the cotter pin 10;

[0101] The cotter pin short tail guide groove 202 is used to receive the cotter pin short tail side 1003 of the cotter pin 10;

[0102] The fixing module 1 is provided with a split pin fixing groove 101 at the upper portion of the inner end (i.e. the left end) facing the open tail module 2;

[0103] The side of the cotter pin fixing slot 101 facing the split tail module 2 (i.e., the inner side) is open;

[0104] The cotter pin fixing groove 101 is used to accommodate the cotter pin head 1001 of the cotter pin 10 .

[0105] In the present invention, in a specific implementation, the cotter pin short tail guide groove 202 is an arc-shaped groove, and is symmetrically distributed on the upper and lower sides.

[0106] In the present invention, in a specific implementation, the shape of the split pin long tail guide hole 201 is cylindrical;

[0107] In the present invention, in a specific implementation, the shape of the cotter pin fixing groove 101 is an elliptical cylinder.

[0108] For specific implementation, see Figure 6 As shown, the top of the cotter pin fixing groove 101 is provided with an opening for allowing the cotter pin head 1001 to enter and exit;

[0109] The width of the top opening of the cotter pin fixing slot 101 is smaller than the length of the major axis of the cotter pin fixing slot 101;

[0110] The top of the cotter pin fixing slot 101 is open and is located in the middle of the top.

[0111] For specific implementation, see Figure 7 As shown, a fixing platform 1010 is provided at the top of the cotter pin fixing groove 101, that is, there is no opening and it is a sealed structure.

[0112] In the present invention, in a specific implementation, a notch 204 is provided on the rear side of the right end of the open-end module 2;

[0113] The right side of the notch 204 is directly connected to the cotter pin long tail guide hole 201;

[0114] The notch 204 is used to allow the end of the cotter pin's long tail side 1002 to slide along the front side wall of the notch 204 after the cotter pin's long tail side 1002 is inserted into the cotter pin's long tail guide hole 201, thereby controlling the angle of the cotter pin's long tail side 1002;

[0115] The cotter pin short tail guide groove 202 and the front side wall of the notch 204 are arranged in a front-to-back correspondence;

[0116] In specific implementation, there is a preset angle between the front side wall of the notch 204 and the groove wall of the cotter pin short tail guide groove 202. Specifically, the angle between the front side wall of the notch 204 and the groove wall (i.e., the rear side wall) of the cotter pin short tail guide groove 202 is 60°. Figure 9 As shown, a corner with an included angle of 60° is formed.

[0117] In a specific implementation, the angle between the front side wall of the notch 204 and the right side wall of the notch 204 is 60°;

[0118] The longitudinal distance between the front side wall of the notch 204 and the cotter pin short tail guide groove 202 gradually decreases from left to right.

[0119] In the present invention, in a specific implementation, the upper parts of the first handle 4 and the second handle 9 are respectively provided with a first circular cross hinge portion 400 and a second circular cross hinge portion 900;

[0120] The first circular cross hinge portion 400 and the second circular cross hinge portion 900 are parallel to each other and have the same shape and size;

[0121] The first circular cross hinge portion 400 is located in front of the second circular cross hinge portion 900;

[0122] The first circular cross hinge portion 400 of the first handle 4 and the second circular cross hinge portion 900 of the second handle 9 are hingedly connected via a longitudinally distributed handle fixing pin 5 .

[0123] Specifically, a handle fixing pin mounting hole 501 is provided at the center of the first circular cross hinge portion 400 of the first handle 4 and the second circular cross hinge portion 900 of the second handle 9;

[0124] The front and rear ends of the handle fixing pin 5 are connected to the two handle fixing pin mounting holes 501 (for example, by riveting).

[0125] In specific implementation, a handle inner spring mounting hole 601 is provided on the lower side of the first circular cross hinge portion 400 and the second circular cross hinge portion 900 on the opposite side of the first handle 4 and the second handle 9;

[0126] The two ends of the helical cylindrical spring 6 are respectively arranged in the spring mounting holes 601 inside the two handles.

[0127] In the present invention, in a specific implementation, the first handle 4 is provided with a first handle lower limit platform 404 and a first handle upper limit platform 405 on the left and right sides of the first circular cross hinge portion 400 respectively;

[0128] The second handle 9 is provided with a second handle lower limiting platform 904 and a second handle upper limiting platform 905 on the left and right sides of the second circular cross hinge portion 900 respectively.

[0129] It should be noted that the first handle lower limit platform 404 and the first handle upper limit platform 405 on the first handle 4 are symmetrically distributed with the second handle lower limit platform 904 and the second handle upper limit platform 905 on the second handle 9 .

[0130] It should be noted that the helical spring 6 is installed in the spring mounting hole 601 on the inner side of the first handle 4 and the second handle 9, respectively, to fix and push the two handles in the two outward directions. The limit blocks on the two handles work together to limit the rotation angle of the handles and prevent the helical spring 6 from falling out.

[0131] In specific implementation, the material of the helical cylindrical spring 6 is stainless steel wire, which conforms to the B group of the spring stainless steel wire standard YB(T)11. It is right-handed and has 14.5 effective turns. It is used to restore the original position of the first handle 4 and the second handle 9, and is installed in the holes machined on the opposite surfaces of the two cross-distributed handles (i.e., in the spring mounting hole 601 on the inner side of the handle).

[0132] It should be noted that the shapes and sizes of the first circular cross hinge portion 400 and the second circular cross hinge portion 90 correspond to each other.

[0133] In the present invention, the specific implementation is also referred to Figure 8 As shown, a first handle front end cylinder 402 is vertically arranged at the top center of the first handle 4;

[0134] The front end cylinder 402 of the first handle is penetrated by a longitudinally distributed first handle module connecting pin shaft mounting hole 401;

[0135] The tail opening module 2 is provided with a vertically distributed first handle front end cylindrical mounting hole 203;

[0136] The front and rear ends of the open tail module 2 are respectively penetrated by a longitudinally distributed open tail module pin shaft mounting hole 2001;

[0137] The two open-end module pin shaft mounting holes 2001 are connected to the cylindrical mounting hole 203 at the front end of the first handle;

[0138] The first handle front end cylinder 402 is inserted into the first handle front end cylinder mounting hole 203;

[0139] The open tail module 2 is fastened together with the front end cylinder 402 of the first handle through the first module connecting pin 301, and the first module connecting pin 301 passes through the corresponding open tail module pin mounting hole 2001 and the first handle module connecting pin mounting hole 401 in sequence.

[0140] In a specific implementation, the cotter pin short tail guide groove 202 is located on the right side of the open tail module pin shaft mounting hole 2001 and is closer to the fixed module 1 than the open tail module pin shaft mounting hole 2001 .

[0141] In specific implementation, the height of the front cylinder 402 of the first handle is equal to the thickness of the open tail module 2, thereby facilitating the positioning and installation of the open tail module 2. The design of the open tail module pin shaft mounting hole 2001 facilitates the replacement and connection of the open tail module 2.

[0142] In the present invention, the specific implementation is also referred to Figure 6 As shown, a second handle front end cylinder 902 is vertically arranged at the top center of the second handle 9;

[0143] The front end cylinder 902 of the second handle is penetrated by a longitudinally distributed second handle module connecting pin shaft mounting hole 901;

[0144] The fixing module 1 is provided with a vertically distributed second handle front end cylindrical mounting hole 103;

[0145] A longitudinally distributed fixing module pin mounting hole 10010 is respectively provided through the front and rear ends of the fixing module 1;

[0146] The two fixing module pin mounting holes 10010 are connected to the cylindrical mounting hole 103 at the front end of the second handle;

[0147] The second handle front end cylinder 902 is inserted into the second handle front end cylinder mounting hole 103;

[0148] The fixing module 1 is fastened to the front end cylinder 902 of the second handle through the second module connecting pin 302, and the second module connecting pin 302 passes through the corresponding fixing module pin mounting hole 10010 and the second handle module connecting pin mounting hole 901 in sequence;

[0149] In specific implementation, the first module connecting pin 301 and the second module connecting pin 302 are both detachable pins with threads at the front end (the fixed module pin mounting hole 10010 located at the rear and the open-tail module pin mounting hole 2001 located at the rear are threaded holes), which are respectively used to connect the first handle with the open-tail module 2 and the second handle with the fixed module 1, and fasten the two modules to the front ends of the two handles, while ensuring that different models of the two modules can be easily replaced.

[0150] It should be noted that, for the present invention, there is no specific requirement for the installation positions of the fixing module 1 and the tail opening module 2 , and they can be interchangeably installed on the first handle 4 or the second handle 9 .

[0151] It should be noted that the cross handle of the present invention is composed of a first handle 4 and a second handle arranged crosswise and symmetrically, and the two handles are connected by a handle pin (i.e., a handle fixing pin 5) as a rotating axis. The material of the first handle 4 and the second handle can be 45 steel or above.

[0152] In the present invention, in a specific implementation, the handle fixing pin 5 is a riveted pin made of carbon steel. After riveting once, it no longer needs to be disassembled. Its function is to connect the two handles. Under the action of the spiral cylindrical spring 6, the two handles can rotate around the handle fixing pin 5.

[0153] In specific implementation, the height of the front cylinder 902 of the second handle is equal to the thickness of the fixing module 1, thereby facilitating the positioning and installation of the fixing module 1. The design of the fixing module pin mounting hole 10010 facilitates the replacement and connection of the fixing module 1.

[0154] In the present invention, in a specific implementation, the lower portion of the first handle 4 and the second handle 9 is the handle end;

[0155] The lower outer surfaces of the first handle 4 and the second handle 9 are respectively covered with a first protective cover 8 and a second protective cover 7 .

[0156] It should be noted that the first protective cover 8 and the second protective cover 7 are respectively inserted into the handle ends of the first handle 4 and the second handle 9 to play the role of anti-slip, anti-wear and aesthetics.

[0157] In the present invention, it should be noted that the handle fixing pin 5 serves as a rotation axis (hinge axis) for connecting the first handle 4 and the second handle 9. After riveting, the two handles are limited to relative rotational movement.

[0158] In specific implementation, the first protective cover 8 and the second protective cover 7 are tightly sleeved outside the two handles, completely covering the contact positions with the handles, and the handle ends are sealed and not exposed, thereby playing an anti-slip and protective role.

[0159] In the present invention, in a specific implementation, the fixed module and the tail opening module are both formed by processing high-hardness tool steel, or are tempered by 45 steel and surface quenched after processing before use.

[0160] In terms of specific implementation, when designing the appearance of the fixing module, in order to better play a fixing role, the slotted portion of the fixing module 1 (i.e., the cotter pin fixing slot 101) is designed with different lengths and widths according to the size of the cotter pin head 1001 of different sizes. At the same time, according to the use conditions of the cotter pin (the distance from the obstacle after the cotter pin is installed), if the cotter pin is far from the workpiece (or obstacle) on which it is installed, the inner side end of the cotter pin fixing module 1 is designed with a fixing platform 1010. If the cotter pin is close to the workpiece (or obstacle) on which it is installed, the inner side end of the cotter pin fixing module 1 does not have a fixing platform 1010 because it cannot accommodate the fixing platform 1010. The opening provided at the top of the cotter pin fixing slot 101 facilitates the entry and exit of the cotter pin head 1001. In other words, the fixing module includes two types: one with a fixing platform and one without a fixing platform.

[0161] In specific implementation, the tail opening module serves as the main working module. After the fixing module fixes the cotter pin head, the long tail side 1002 of the cotter pin is inserted into the long tail guide hole 201 of the cotter pin to prevent the tool from shifting. Then, force is applied to the middle of the first handle 4 and the second handle 9 to clamp them. The long tail side 1002 of the cotter pin is shifted to one side under the action of the long tail guide hole 201, thereby opening a gap at the tail.

[0162] It should be noted that the method of the present invention is different from the existing method. The existing method is: fix the cotter pin head with needle-nosed pliers or other tools, use needle-nosed pliers to bend the long tail side of the cotter pin to an appropriate angle several times, and then bend the short tail side of the cotter pin to an appropriate angle. The angle size cannot be fixed. When the cotter pin head is fixed with other tools, there is a possibility of movement when the cotter pin tail is opened (i.e., the opening operation) (because only one end is fixed), resulting in the cotter pin and the fixed part not fitting together when finally fixed, and there is a possibility of movement.

[0163] When the two handles continue to engage, the 60° sharp angle of the open tail module penetrates into the middle of the cotter pin (i.e., the gap between the short tail side 1003 of the cotter pin and the long tail side 1002 of the cotter pin). Since the fixing module 1 has fixed the relative position of the cotter pin and the tool, in the process of clamping the two handles, the long tail guide hole 201 of the cotter pin guides the direction of the cotter pin, and the short tail side 1003 of the cotter pin enters the other side of the open tail module 2 with a short tail guide groove 202 for the cotter pin. The short tail side 1003 of the cotter pin on the other side of the cotter pin moves outward along the short tail guide groove 202 for the cotter pin, that is, it performs an opening movement, thereby evenly pulling the two tails of the cotter pin apart to form a 60° angle, and opening until the bolt or shaft where the cotter pin is located, so that the cotter pin is close to the bolt or shaft to prevent the cotter pin from moving on the bolt or shaft.

[0164] In order to more clearly understand the technical solution of the present invention, the installation operation process of the present invention is described below.

[0165] First, for the parts that have been inserted through the fixed parts (such as bolts or shafts, such as Figure 4 The cotter pin 10 is placed in the mounting hole of the fixed shaft (shown as shown), the cotter pin head 1001 is placed in the cotter pin fixing groove 101 of the fixing module 1, the long tail side 1002 of the cotter pin is aligned with the cotter pin long tail guide hole 201 of the opening tail module 2, and the first handle and the second handle are moved in opposite directions to achieve engagement, thereby fixing the head and tail of the cotter pin, solving the problem that the cotter pin is easy to rotate on the fixed part (such as a bolt or shaft);

[0166] Then, force is applied to the first handle and the second handle to rotate the two handles around the handle pin 5 and move toward each other, so that the short tail side 1003 of the split pin enters the short tail guide groove 202 of the split tail module 2;

[0167] Then, continue to apply force on the two handles to rotate the two handles around the handle pin shaft 5, and continue to engage so that the long tail side and the short tail side of the cotter pin are split along the two inclined surfaces of the 60° angle of the cotter module, until the tail end of the cotter pin 10 is split to the position of the fixed part (such as a bolt or shaft), completing the installation of the cotter pin.

[0168] Compared with the prior art, the standardized installation device for the split pin provided by the present invention has the following advantages:

[0169] Beneficial effects:

[0170] 1. The two modules of the present invention, the fixed module and the open tail module, can be used in all occasions where cotter pins are used for fixing. They solve the problems of low installation efficiency caused by the easy rotation of cotter pins on the fixed parts (such as bolts or shafts) during ordinary installation, and the problem that the tail of the cotter pin is difficult to split, which can greatly improve work efficiency.

[0171] 2. The present invention uses an opening module to limit the opening angle of the tail of the cotter pin, so that the opening angle of each cotter pin is uniform, and avoids the damage to the cotter pin caused by the existing hammering process, so that the cotter pin can be installed quickly and standardized.

[0172] 3. The two modules of the present invention, the fixed module and the tail opening module, adopt a modular design. By replacing modules of different models, they can adapt to the use requirements of cotter pins of different specifications and models. The modules are easy to replace, reducing the number and weight of tools carried by the staff.

[0173] 4. For the present invention, by applying a fixing module and an opening tail module, a one-time use can achieve the effect of fixing the cotter pin head and opening the cotter pin tail to a specified angle, so that the cotter pin is firmly installed on the fixed part (such as the working shaft). Different models of modules can be replaced according to the size of the cotter pin, installation conditions and other issues to achieve the best adaptability.

[0174] 5. The present invention enables rapid and standardized installation of cotter pins, effectively resolving the problems of low installation efficiency caused by rotation during cotter pin installation, as well as the problems of the cotter pin tail being unable to be opened, the opening angle being inconsistent, the tail opening being incorrectly positioned, and the cotter pin moving within the mounting hole of the fixed part. The present invention ensures consistent installation quality of the cotter pin.

[0175] To sum up, compared with the prior art, the present invention provides a standardized installation device for a cotter pin, which has a scientific structural design and is used in the installation operation of a cotter pin. The standardized installation device for a cotter pin, which has a scientific structural design and is used in the installation operation of a cotter pin, can effectively solve the problem of low installation efficiency due to the easy rotation of the cotter pin on the fixed part, and the problem that the tail of the cotter pin is difficult to open. The cotter pin can be installed conveniently and reliably, which significantly improves the installation efficiency of the cotter pin and reduces the labor intensity of the staff, and has important practical significance.

[0176] For ease of use, the present invention is designed as a handheld device. After verification, it has been shown to be capable of accommodating the installation of cotter pins of varying sizes. This effectively addresses the issues currently encountered with various cotter pins, such as low installation efficiency caused by the cotter pin rotating on the fixed component during installation, as well as issues such as inconvenience in opening the tail, inconsistent angles after opening, and movement of the cotter pin on the fixed component (i.e., shaft or bolt) after opening the tail.

[0177] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A standardized installation device for a cotter pin, characterized in that: It comprises an open tail module (2), a fixing module (1), a first handle (4) and a second handle (9); The first handle (4) and the second handle (9) are cross-symmetrically distributed; An open tail module (2) is provided at the top end of the first handle (4); A fixing module (1) is provided at the top end of the second handle (9); The tail opening module (2) and the fixing module (1) protrude from the inner sides of the first handle (4) and the second handle (9) respectively; The front side surface of the right end of the open tail module (2) is a plane inclined backward; The front side of the right end of the open tail module (2) is provided with a cotter pin short tail guide groove (202) which is gradually tilted backward from left to right; The right end of the open tail module (2) is provided with a cotter pin long tail guide hole (201); The opening of the long tail guide hole (201) of the cotter pin faces the direction of the fixed module (1); The split pin long tail guide hole (201) is used to place the split pin long tail side (1002) of the split pin (10); The cotter pin short tail guide groove (202) is used for accommodating the cotter pin short tail side (1003) of the cotter pin (10); The fixing module (1) is provided with a split pin fixing groove (101) at the upper portion of the inner end facing the open tail module (2); The side of the cotter pin fixing groove (101) facing the open tail module (2) is open; The cotter pin fixing groove (101) is used to place the cotter pin head (1001) of the cotter pin (10); A notch (204) is provided on the rear side of the right end of the open-end module (2); The right side of the notch (204) is directly connected to the cotter pin long tail guide hole (201); The notch (204) is used to allow the end of the cotter pin's long tail side (1002) to slide along the front side wall of the notch (204) after the cotter pin's long tail side (1002) is inserted into the cotter pin's long tail guide hole (201); The cotter pin short tail guide groove (202) and the front side wall of the notch (204) are arranged in front and back correspondence; The cotter pin short tail guide groove (202) is an arc-shaped groove and is symmetrically distributed on the upper and lower sides; The top of the cotter pin fixing groove (101) is provided with an opening for allowing the cotter pin head (1001) to enter and exit.

2. The standardized installation device for a cotter pin according to claim 1, characterized in that: The shape of the cotter pin long tail guide hole (201) is cylindrical; The shape of the cotter pin fixing groove (101) is an elliptical cylinder; The angle between the front side wall of the notch (204) and the groove wall of the cotter pin short tail guide groove (202) is 60°; The angle between the front side wall of the notch (204) and the right side wall of the notch (204) is 60°; The longitudinal distance between the front side wall of the notch (204) and the cotter pin short tail guide groove (202) gradually decreases from left to right.

3. The standardized installation device for a cotter pin according to claim 1, characterized in that: The width of the top opening of the cotter pin fixing groove (101) is smaller than the length of the major axis of the cotter pin fixing groove (101); The top opening of the cotter pin fixing slot (101) is located at the middle position of the top thereof.

4. The standardized installation device for a cotter pin according to claim 1, wherein: The upper parts of the first handle (4) and the second handle (9) are respectively provided with a first circular cross hinge portion (400) and a second circular cross hinge portion (900); The first circular cross hinge portion (400) and the second circular cross hinge portion (900) are parallel to each other and have the same shape and size; The first circular cross hinge (400) is located in front of the second circular cross hinge (900); The first circular cross hinge portion (400) of the first handle (4) and the second circular cross hinge portion (900) of the second handle (9) are hingedly connected via a longitudinally distributed handle fixing pin (5).

5. The standardized installation device for split pins according to claim 4, characterized in that: A handle fixing pin mounting hole (501) is respectively provided at the center of the first circular cross hinge portion (400) of the first handle (4) and the second circular cross hinge portion (900) of the second handle (9); The front and rear ends of the handle fixing pin shaft (5) are connected to the two handle fixing pin mounting holes (501).

6. The standardized installation device for split pins according to claim 4, characterized in that: On opposite sides of the first handle (4) and the second handle (9), a handle inner spring mounting hole (601) is provided on the lower sides of the first circular cross hinge portion (400) and the second circular cross hinge portion (900); The two ends of the helical cylindrical spring (6) are respectively arranged in the spring mounting holes (601) inside the two handles.

7. The standardized installation device for split pins according to claim 4, characterized in that: The first handle (4) is provided with a first handle lower limit platform (404) and a first handle upper limit platform (405) on the left and right sides of the first circular cross hinge portion (400), respectively; The second handle (9) is provided with a second handle lower limit platform (904) and a second handle upper limit platform (905) on the left and right sides of the second circular cross hinge portion (900), respectively; The first handle lower limit platform (404) and the first handle upper limit platform (405) on the first handle (4) are respectively symmetrically distributed with the second handle lower limit platform (904) and the second handle upper limit platform (905) on the second handle (9).

8. The standardized installation device for a cotter pin according to any one of claims 1 to 7, characterized in that: A first handle front end cylinder (402) is vertically arranged at the center of the top end of the first handle (4); A longitudinally distributed first handle module connecting pin shaft mounting hole (401) is provided through the front end cylinder (402) of the first handle; The tail opening module (2) is provided with a vertically distributed first handle front end cylindrical mounting hole (203); A longitudinally distributed open-tail module pin shaft mounting hole (2001) is respectively provided through the front and rear ends of the open-tail module (2); The two open-end module pin shaft mounting holes (2001) are connected to the front cylindrical mounting hole (203) of the first handle; The front end cylinder (402) of the first handle is inserted into the front end cylinder mounting hole (203) of the first handle; The open tail module (2) is fastened to the front end cylinder (402) of the first handle via the first module connecting pin (301), and the first module connecting pin (301) sequentially passes through the corresponding open tail module pin mounting hole (2001) and the first handle module connecting pin mounting hole (401); The split pin short tail guide groove (202) is located on the right side of the split tail module pin shaft mounting hole (2001).

9. The standardized installation device for split pins according to claim 8, characterized in that: A second handle front end cylinder (902) is vertically arranged at the center of the top end of the second handle (9); A second handle module connecting pin shaft mounting hole (901) is longitudinally distributed through the front end cylinder (902) of the second handle; The fixing module (1) is provided with a vertically distributed second handle front end cylindrical mounting hole (103); A longitudinally distributed fixing module pin shaft mounting hole (10010) is respectively provided through the front and rear ends of the fixing module (1); The two fixing module pin shaft mounting holes (10010) are connected to the front cylindrical mounting hole (103) of the second handle; The front end cylinder (902) of the second handle is inserted into the front end cylinder mounting hole (103) of the second handle; The fixing module (1) is fastened to the front end cylinder (902) of the second handle via the second module connecting pin (302), and the second module connecting pin (302) sequentially passes through the corresponding fixing module pin mounting hole (10010) and the second handle module connecting pin mounting hole (901).

10. The standardized installation device for split pins according to claim 9, characterized in that: The height of the front end cylinder (402) of the first handle is equal to the thickness of the open tail module (2); The height of the front end cylinder (902) of the second handle is equal to the thickness of the fixing module (1); The lower parts of the first handle (4) and the second handle (9) are handle ends; The lower outer surfaces of the first handle (4) and the second handle (9) are respectively covered with a first protective sleeve (8) and a second protective sleeve (7).

Images