CN110253491B - Pin pressing device - Google Patents

Abstract

The invention provides a pin pressing device, which relates to the technical field of assembly tools, and comprises a fixing piece, a guide piece, a pin ejecting piece and an elastic part; the elastic component is arranged between the top pin piece and the fixing piece, the top pin piece can move close to or away from the fixing piece, when the top pin piece moves close to the fixing piece, the elastic component stores energy, and the elastic component can drive the top pin piece to move away from the fixing piece through elasticity after storing energy, so that the top pin piece pushes the pin shaft to be inserted into a pin hole of the to-be-installed piece or the top pin piece pushes the pin shaft out of the pin hole of the to-be-installed piece. Compared with the prior art, the invention has the advantages of simple structure, no need of complicated oil ways, small equipment volume and convenient movement; the hammer is not required to be swung, so that the phenomenon that the hammer is swung to collide with surrounding things or knockers is avoided, and potential safety hazards to the knockers or surrounding things are eliminated.

Description

Pin pressing device

Technical Field

The invention relates to the technical field of assembly tools, in particular to a pin pressing device.

Background

The excavator is equipment frequently used in construction processes such as roads, and bucket teeth on a bucket of the excavator can be replaced according to different needs or after being worn. The bucket of the existing structure is welded with the tooth holder, the bucket teeth are connected with the tooth holder through the pin shafts, and when the specific bucket teeth are connected with the tooth holder, the pin shafts are usually required to be installed in pin shaft holes of the bucket teeth and the tooth holder by adopting an assembling and disassembling mechanism.

The existing assembly mechanism generally adopts a special hydraulic pin pressing tool, so that the equipment is large and inconvenient to move; or the hammer is manually adopted to strike the knock pin rod so as to knock the pin shaft into or out of the pin shaft hole, thereby wasting manpower, and the hammer often needs to hold the knock pin rod pin when striking, and bringing great potential safety hazard to knockers or surrounding things.

The above problems are not only present in the process of mounting the bucket teeth of the excavator, but also in other similar mechanisms requiring the assembly of the pin.

Disclosure of Invention

The invention aims to provide a pin pressing mechanism which solves the technical problems of huge volume and inconvenient movement of the existing hydraulic pin pressing tool.

The invention provides a pin pressing device which comprises a fixing piece, a guide piece, a pin ejecting piece and an elastic part, wherein the fixing piece is provided with a pin pressing hole;

The elastic component is arranged between the top pin piece and the fixing piece, and the top pin piece can move close to or far away from the fixing piece; the guide piece is used for guiding the ejector pin piece so as to enable the ejector pin piece to move along a straight line;

when the ejector pin piece moves close to the fixing piece, the elastic component stores energy, and after the elastic component stores energy, the ejector pin piece can be driven by elastic force to move away from the fixing piece, so that the ejector pin piece pushes the pin shaft to be inserted into the pin hole of the piece to be installed or pushes the pin shaft out of the pin hole of the piece to be installed.

Further, the elastic component is a spring.

Further, the pin pressing device further comprises a handle, the handle is connected with the top pin piece, and the handle is used for pushing the top pin piece to move close to the fixing piece.

Further, the pin pressing device further comprises a support member, and the support member is arranged between the fixing member and the pin pushing member;

the handle comprises an operating rod and a connecting rod, wherein one end of the operating rod, which is close to the top pin piece, is hinged with the supporting piece, the connecting rod is connected between the operating rod and the top pin piece, one end of the connecting rod is hinged with the operating rod, and the other end of the connecting rod is hinged with the top pin piece.

Further, the pin pressing device further comprises a fixing frame, one side wall of the fixing frame serves as the fixing piece, the supporting piece is a supporting rod connected to the fixing frame, and the pin pushing piece and the elastic component are arranged in the frame of the fixing frame.

Further, the ejector pin piece comprises a sliding block and an ejector pin rod, the sliding block is arranged on the fixed frame in a sliding manner, and the elastic part is arranged between the sliding block and the fixed piece; the ejector pin rod is connected to one side, far away from the fixing piece, of the sliding block and is used for being abutted with the pin shaft so as to push the pin shaft.

Further, the guide piece is a guide rod arranged on the fixed frame, the sliding block and the top pin rod are coaxially provided with guide holes, and the sliding block and the top pin rod are slidably sleeved on the guide rod through the guide holes.

Further, the pin pressing device further comprises a limiting piece, and the limiting piece is used for limiting the movement of the ejector pin piece when the ejector pin piece moves to a preset position.

Further, the ejector pin piece is connected with a clamping rod, the length direction of the clamping rod is consistent with the moving direction of the ejector pin piece, and a plurality of clamping positions are arranged on the clamping rod at intervals along the length direction;

The pin pressing device further comprises a limiting rod, the limiting rod is hinged to the supporting piece, and one end of the limiting rod can be abutted with one of the clamping positions to limit movement of the top pin piece.

Further, the middle part of the limiting rod is hinged with the supporting piece, one end, away from the limiting rod, of the limiting rod, which is abutted against the clamping rod is an operation end, and the operation end is used for driving the limiting rod to rotate around the hinging position of the limiting rod and the supporting piece, so that one end, close to the clamping rod, of the limiting rod is abutted against the clamping position of the clamping rod or one end, close to the clamping rod, of the limiting rod is separated from the clamping position of the clamping rod.

Further, the clamping position is a convex block or a groove.

Further, the clamping rod is arranged between the fixing piece and the ejector pin piece, the clamping rod is positioned below the elastic component, and the clamping position of the clamping rod is arranged on the lower side face of the clamping rod;

the fixed frame corresponds to the below of screens pole is provided with stop spring, stop spring's upper end with the gag lever post is close to the one end of screens pole is connected, just stop spring has the messenger the gag lever post is close to the one end of screens pole to the trend that screens pole removed.

Further, a limiting block is further arranged on the supporting piece, and the limiting block is arranged above the hinge position of the limiting rod and the supporting piece.

Further, one end of the fixing frame, which is far away from the fixing piece, is provided with a containing space for the piece to be installed, and the fixing frame is provided with a positioning piece for positioning the piece to be installed corresponding to the containing space.

Further, a positioning hole is formed in the side face, opposite to the fixing piece, of the fixing frame, and the positioning hole and the guide rod are coaxially arranged;

the positioning holes are used for positioning the pin shaft of the piece to be installed.

Further, the pin pressing device further comprises an extension bar, and the extension bar and the handle can be detachably connected.

The pin pressing device comprises a fixing piece, a pin ejecting piece, a guide piece and an elastic part. According to the pin pressing device, the ejector pin piece can be moved towards the fixing piece by using the energy storage effect of the elastic part under the guide of the guide piece by manpower and the like, so that the elastic part stores energy; after the energy storage reaches the requirement, the top pin piece is loosened, and the top pin piece is guided by the guide piece and impacted by the elastic force of the elastic component. Specifically, for example, when the pin shaft is dismounted or mounted, the ejector pin piece is aligned to one end of the pin shaft, and when the pin shaft is required to be dismounted, the ejector pin piece is guided downwards by the guide piece and is impacted by the elastic force of the elastic piece, the pin shaft is ejected out of the pin shaft hole of the bucket tooth and the tooth seat, so that the pin shaft is taken down, and the bucket tooth and the tooth seat are quickly separated; when the pin shaft is required to be installed, the pin ejecting member is guided downwards by the guide member and is impacted by the elastic force of the elastic member, so that the pin shaft enters the pin shaft holes of the bucket teeth and the tooth holder, and the bucket teeth and the tooth holder are installed. Compared with the existing hydraulic pin pressing tool, the pin pressing device has the advantages that the structure is simple, a complicated oil way is not needed, the equipment volume is small, and the movement is convenient; compared with the existing manual mode of beating the top pin rod by the hammer, the top pin rod can be driven by pushing when moving towards the direction of the fixing piece, the hammer is not required to be swung, and due to the guiding effect of the guide rod, the top pin rod can be accurately aligned with the pin shaft, so that the phenomenon that the hammer is swung to collide with surrounding things or knockers is avoided, and potential safety hazards caused to the knockers or surrounding things are eliminated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of a pin press provided in an embodiment of the present invention;

fig. 2 is a schematic front view of a pin pressing device matched with a piece to be installed according to an embodiment of the present invention;

fig. 3 is a schematic view of a fixing frame of the pin pressing device according to an embodiment of the present invention.

Icon: 1-fixing a frame; 101-a fixing piece; 2-positioning pieces; 3-a guide rod; 4-a knock pin; 5-a slider; 6-connecting rods; 7-a support; 8-a spring; 9-an operating lever; 10-lengthening bar; 11-a clamping rod; 12-limiting blocks; 13-a limit rod; 14-limiting springs; 15-a pin ejection member; 16-positioning holes.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 3, the present embodiment provides a pin pressing device including a fixing member 101, a knock pin member 15, a guide member, and an elastic member.

Wherein the elastic member is provided between the knock pin 15 and the fixing member 101, the knock pin 15 is movable toward and away from the fixing member 101, and the guide member is used for guiding the knock pin 15 so that the knock pin 15 moves in a straight line. When the top pin 15 moves close to the fixing piece 101, the elastic component stores energy, and the elastic component can drive the top pin 15 to move away from the fixing piece 101 through elastic force after storing energy, so that the top pin 15 pushes the pin shaft to be inserted into the pin hole of the piece to be installed or the top pin 15 pushes the pin shaft out of the pin hole of the piece to be installed.

In this embodiment, the elastic member should have energy storage performance, and after the external force is removed, the elastic member can quickly release the energy stored in the elastic member; that is, the elastic member can exert a large impact force on the knock pin 15 after the energy storage is completed. The elastic member may be a clip spring, a disc spring, a column spring 8, or the like. The present embodiment is described taking the spring 8 as an example.

According to the pin pressing device, the pin pressing piece 15 can be moved towards the fixing piece 101 by using the energy storage effect of the elastic component through manual work and the like, so that the elastic component can store energy; after the energy storage reaches the requirement, the top pin piece 15 is loosened, and the top pin piece 15 is guided by the guide piece and impacted by the elastic force of the elastic component. Specifically, in this embodiment, the connection between the tooth and the tooth holder is described as an example. When the pin shaft is dismounted or mounted, the pin ejecting piece 15 is aligned with one end of the pin shaft, and when the pin shaft is required to be dismounted, the pin ejecting piece 15 can impact the pin shaft under the elastic action of the elastic piece, and the pin shaft is ejected out of the pin shaft holes of the bucket teeth and the tooth holder, so that the pin shaft is taken down, and the bucket teeth and the tooth holder are rapidly separated; when the pin shaft needs to be installed, the pin shaft can be impacted by the pin jack 15 under the elastic action of the elastic piece, so that the pin shaft enters the pin shaft holes of the bucket teeth and the tooth holder, and the bucket teeth and the tooth holder are installed.

Compared with the existing hydraulic pin pressing tool, the pin pressing device provided by the embodiment of the invention has the advantages that the structure is simple, a complicated oil way is not needed, the equipment volume is small, and the movement is convenient; compared with the existing manual mode of beating the pin jacking rod 4 by a hammer, the pin jacking member 15 does not need to swing the hammer in a pushing mode or the like when moving towards the direction of the fixing member 101, so that the phenomenon that the hammer is swung to collide with surrounding things or knockers is avoided, and potential safety hazards to the knockers or surrounding things are eliminated.

As a preferred embodiment of the present invention, in this embodiment, the pin pressing device further includes a handle connected to the ejector pin member 15, the handle being for pushing the ejector pin member 15 to move closer to the fixing member 101.

With continued reference to fig. 1-2, as a preferred construction of the handle, the handle includes a lever 9 and a link 6. The pin pressing device further comprises a supporting piece 7, the supporting piece 7 is arranged between the fixing piece 101 and the top pin piece 15, one end, close to the top pin piece 15, of the operating rod 9 is hinged to the supporting piece 7, the connecting rod 6 is connected between the operating rod 9 and the top pin piece 15, one end of the connecting rod 6 is hinged to the operating rod 9, and the other end of the connecting rod 6 is hinged to the top pin piece 15. Specifically, the two ends of the connecting rod 6 are respectively connected with the sliding block 5 and the operating rod 9 through a revolute pair.

It will be appreciated that the handle in the preferred form of this embodiment is movable by rotation of the link 6 to move the pin 15. That is, when the operation lever 9 rotates about its hinge point with the support 7, the corresponding link 6 rotates under the action of the operation lever 9 and drives the top pin 15 to move closer to or farther from the fixing member 101. The operation mode is simple, and compared with the mode of directly pushing the top pin member 15, the operation mode is labor-saving.

Corresponding to the form of the handle of the present embodiment, the pin pressing device of the present embodiment further comprises an extension bar 10, the extension bar 10 may be a hollow tube, and correspondingly, the extension bar 10 may be sleeved on the operation rod 9, and energy storage of the spring 8 may be achieved by applying a force on the extension bar 10.

It should be noted that, the extension bar and the operation rod are not limited to the sleeving form, and other detachable connection modes are also applicable, so that the bolt connection is facilitated.

With continued reference to fig. 1-3, as a specific structural form of the press pin device of the present invention, the press pin device includes a fixed frame 1, the fixed frame 1 serving as a supporting base for other members. In this embodiment, the fixing frame 1 is a substantially rectangular square frame, wherein the left side wall of the fixing frame 1 is used as a fixing member 101, the supporting member 7 is a supporting rod connected to the fixing frame 1, and the ejector pin member 15 and the elastic member are disposed in the frame of the fixing frame 1.

Specifically, the knock pin 15 includes a slider 5 and a knock pin lever 4, the slider 5 is slidably provided on opposite side walls of the fixed frame 1, and the spring 8 is provided between the slider 5 and the fixed member 101; the ejector pin rod 4 is connected to one side of the slider 5 away from the fixing piece 101, and the ejector pin rod 4 is used for being abutted with the pin shaft so as to push the pin shaft.

It can be understood that the sliding block 5 is matched with the form of the ejector pin rod 4, on one hand, the sliding block 5 can be reasonably arranged according to the requirement, so that the contact area between the spring 8 and the sliding block 5 is increased, and the spring 8 with a proper size can be selected; on the other hand, the size of the ejector pin rod 4 can be reasonably selected according to the size of the pin shaft, correspondingly, the smaller-diameter ejector pin rod 4 can be selected, the contact area between the ejector pin rod 4 and the pin shaft is correspondingly reduced, and the pressure of the ejector pin rod 4 on the pin shaft is improved. That is, the ejector pin 15 is in the form of the slider 5 and the ejector pin rod 4, so that the optimal form selection matching can be performed on each part, and the stability and the output efficiency of the device are improved.

As shown in fig. 1 or 2, the fixed frame 1 is provided with a guide rod 3 along the moving direction of the sliding block 5, the guide rod 3 is a guide member, that is, the left side wall serving as the fixed member 101 is connected with the guide rod 3 in a rightward extending manner, guide holes are coaxially formed in the sliding block 5 and the top pin 4, and the sliding block 5 and the top pin 4 are slidably sleeved on the guide rod 3 through the guide holes.

It will be appreciated that in this embodiment the ejector pin 4 corresponds to a hollow tube and the combination of the slider 5 and the ejector pin is connected to the guide rod 3 as a cylindrical pair, but is only movable in the direction of the guide rod 3 under the constraint of the upper and lower side walls of the fixed frame 1.

As an alternative, the side of the fixing frame 1 as the fixing member 101 is provided with a screw hole in which the guide rod 3 is screw-coupled.

It should be noted that, the structural form of the fixed frame 1 is not limited to the square frame given in the embodiment, the shape of the square frame can be reasonably selected according to the need, and the connection form of the sliding block 5 and the fixed frame 1 is not limited to the form given in the embodiment, for example, the connection form of the sliding block 5 and two opposite sides of the fixed frame 1 can be replaced by a form in which a guide rail is arranged in the fixed frame 1 and is in sliding connection with two ends of the sliding block 5 through the guide rail.

As an alternative embodiment of the present invention, the pin pressing device further includes a limiting member for limiting the movement of the pin 15 when the pin 15 moves to the preset position.

Specifically, with respect to the pin pressing device in the present embodiment, referring to fig. 1 or 2, the stopper includes a detent lever 11 and a stopper lever 13. Specifically, the knock pin 15 is connected to the lock lever 11, and the lock lever 11 has a length direction that matches the moving direction of the knock pin 15, and a plurality of lock positions are provided at intervals in the length direction on the lock lever 11. The middle part of the limiting rod is hinged (specifically may be connected by a rotating shaft) on the supporting member 7, and one end of the limiting rod 13 can be abutted with one of a plurality of clamping positions so as to limit the movement of the top pin member 15. Wherein, the one end of gag lever post far away from its and screens pole 11 butt is the operation end, and the operation end is used for driving gag lever post 13 around the articulated position rotation of gag lever post 13 and support piece 7 to make the one end that the gag lever post is close to screens pole 11 and screens butt or make the one end that the gag lever post is close to screens pole 11 break away from the screens of screens pole 11.

It will be appreciated that the detent lever 11 can move with the slider 5. The clamping position can be a groove which is concave inwards on the clamping position rod 11, and can also be a convex block which is convex outwards on the clamping position rod 11, and the groove or the convex block can be abutted with the limiting rod.

As a specific form, referring to fig. 1 to 2, the detent lever 11 is provided between the fixing member 101 and the knock pin member 15, and the detent lever 11 is located below the spring 8, and the detent of the detent lever 11 is provided on the lower side surface of the detent lever 11; the fixed frame 1 is provided with a limit spring 14 corresponding to the lower part of the clamping rod 11, the upper end of the limit spring 14 is connected with (can be in butt joint with) one end of the limit rod close to the clamping rod 11, and the limit spring 14 has a trend of enabling one end of the limit rod close to the clamping rod 11 to move towards the clamping rod 11.

The support piece 7 is also provided with a limiting block 12, and the limiting block 12 is arranged above the hinge position of the limiting rod and the support piece 7. The limiting block 12 is used for limiting the moving range of the limiting rod 13, so that the limiting rod 13 is prevented from moving along with the clamping rod 11.

It can be understood that a plurality of clamping positions are arranged on the clamping rod 11 along the length direction at intervals, correspondingly, when the limiting rod 13 is abutted against clamping positions at different positions, the sliding block 5 connected with the clamping rod 11 can be positioned at different positions, namely, when the handle drives the sliding block 5 and the ejector pin rod 4 to move to different positions in the moving direction, the clamping rod 11 and the limiting rod 13 can be fixed, and the fixing of the sliding block 5 and the ejector pin rod 4 according to the compression requirement of the spring 8 is realized. For example, corresponding to the form shown in fig. 1-2, when the energy storage of the spring 8 is needed to be larger, the sliding block 5 and the knock pin 4 can be pulled by the handle to move to a position close to the fixing piece 101, and at the moment, the limiting rod 13 is clamped with a clamping position on the clamping rod 11, which is far away from the fixing piece 101, so that the spring 8 can be maintained in a state of larger energy storage; when the energy storage of the spring 8 is smaller, the sliding block 5 and the ejector pin rod 4 can be pulled by the handle to move to a far position of the fixing piece 101, and at the moment, the limiting rod is clamped with a clamping position on the clamping rod 11, which is close to the fixing piece 101, so that the spring 8 can be kept in a state of smaller energy storage.

In order to facilitate placement of the to-be-mounted member, in this embodiment, the fixing frame 1 is a directional frame, that is, as shown in fig. 1 to 3, the front-rear direction (the direction perpendicular to the paper surface in fig. 2) of the fixing frame 1 is a through hole type. One end of the fixed frame 1 far away from the fixed piece 101 is provided with a containing space of the piece to be installed, and the fixed frame 1 is provided with a positioning piece 2 for positioning the piece to be installed corresponding to the containing space.

Wherein the positioning member 2 may be positioning rubber. For the form of the tooth and the tooth holder, as shown in fig. 2, the side surface of the positioning rubber, which contacts with the piece to be mounted, namely the tooth holder or the tooth, is an inclined surface.

The positioning piece 2 is used for positioning the fixed frame and the piece to be installed (namely, the bucket tooth and the tooth holder), and ensures that the bucket tooth, the tooth pin and the guide rod 3 are in coaxial positions.

In order to enable the knock pin 4 to be flush with the pin shaft better, a positioning hole 16 is formed in the side face, opposite to the fixing piece, of the fixing frame 1, the positioning hole 16 is coaxial with the guide rod 3, and the positioning hole 16 is used for positioning the pin shaft of the piece to be installed and is also an access hole of the pin shaft.

In the pin pressing device of the embodiment, when in use, the extension rod can be sleeved on the operating rod 9 of the handle. Then, as shown in fig. 2, the tooth holder and the tooth are first passed through the front and rear sides of the fixed frame 1, placed in the accommodating space, and fixed and adjusted by positioning rubber, so that the pin shaft hole connecting the tooth holder and the tooth holder is aligned with the knock pin rod 4. For the form of the pin shaft to be disassembled, at the moment, the pin shaft is aligned with the ejector pin rod 4, the extension rod 10 is pressed down to drive the handle to rotate, the sliding block 5 compresses the spring 8 to enable the spring 8 to store energy, and after the spring 8 is in place, the sliding block 5 is firstly abutted on the clamping rod 11 through the limiting rod 13 to fix the sliding block. The extension bar 10 is detached from the handle, then the operation end of the limit bar 13 is pressed to rotate the limit bar 13, the limit bar 13 is separated from the clamping position of the clamping bar 11, and at the moment, under the action of the spring 8, the sliding block 5 drives the ejector pin 4 to rapidly impact the pin shaft, so that the pin shaft is separated from the pin shaft hole.

For the form of installing the pin shaft, before the handle compresses the spring 8, one end of the pin shaft needs to be inserted into the pin shaft hole, and subsequent operation is similar to the process of disassembling the pin shaft, and repeated description is omitted.

It should be noted that, when the pin shaft is disassembled, the pin shaft is not difficult to pull out, and the length of the pin shaft is larger than that of the shaft hole, the jacking pin rod 4 can only push one end of the pin shaft, which is close to the jacking pin rod 4, to be flush with the outer edge of the pin shaft hole, and correspondingly, at the moment, one end, which is far away from the jacking pin rod 4, of the pin shaft can be exposed for a longer distance, and at the moment, the pin shaft can be pulled out in a manual handheld mode. For the general form of the pin shaft to mate with the shaft bore, the outer diameter of the ejector pin 4 should be slightly smaller than the inner diameter of the pin shaft bore so that the ejector pin 4 can enter the pin shaft bore to eject the pin shaft completely from the pin shaft bore.

It should be noted that, in this embodiment, when the stop lever 13 is disengaged from the detent, the stop lever 13 should be moved to a position where it is not in contact with the stop spring 14, so as to avoid the contact between the stop lever 13 and the detent lever 11, and generate friction force, so that the energy storage utilization rate of the spring 8 is reduced. Naturally, even if the stop lever 13 still contacts with the stop lever 11, at this time, since the stop lever 11 contacts with the stop lever in a smooth surface, the spring 8 can naturally overcome the friction force between the stop lever 11 and the stop lever to drive the top pin 15 to act in the energy storage state.

The compression bar device of the embodiment of the invention perfectly combines the lever design and the crank block design, and can lead the mechanism to obtain larger elastic potential energy only by smaller external force, and the main working principle is as follows: firstly, an external force is applied to the far end (the position of the extension rod 10) of a lever fulcrum (the hinge point between the operating rod 9 and the supporting piece 7), the force is transmitted to the sliding block 5 through a handle, the sliding block 5 is driven to move to compress the spring 8 to store energy, the limiting rod 13 is pulled after the sliding block is pulled, and elastic potential energy is released to push the ejector pin rod 4 on the sliding block 5 to move, so that the assembly and the disassembly of the pin shaft are realized, and the device has the advantages of simple structure, small volume, large output, high universality and the like.

The compression bar device of the embodiment of the invention has the beneficial effects that:

1. small volume, easy positioning and convenient carrying.

2. The structure design is simple, the real-time performance is strong, the reliability is high, and the implementation is easy.

3. No extra power source is needed, and the assembly and disassembly of the excavator bucket teeth in the wild are facilitated.

4. The pin shaft assembly and disassembly device has the advantages that the pin shaft assembly and disassembly device can be suitable for pin shafts such as different tooth pins by changing the pin rods and springs with different specifications, and the application range is wide.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (12)

1. A pin pressing device, characterized in that the pin pressing device comprises a fixing piece (101), a guiding piece, a pin ejecting piece (15) and an elastic part;

The elastic component is arranged between the top pin piece (15) and the fixing piece (101), and the top pin piece (15) can move close to or away from the fixing piece (101); the guide piece is used for guiding the ejector pin piece (15) so as to enable the ejector pin piece (15) to move along a straight line;

When the ejector pin piece (15) moves close to the fixing piece (101), the elastic component stores energy, and the elastic component can drive the ejector pin piece (15) to move away from the fixing piece (101) through elastic force after storing energy so that the ejector pin piece (15) pushes a pin shaft to be inserted into a pin hole of the piece to be installed or the ejector pin piece (15) pushes the pin shaft to be pushed out of the pin hole of the piece to be installed;

The device further comprises a support (7), wherein the support (7) is arranged between the fixing piece (101) and the ejector pin piece (15); the pin pressing device further comprises a limiting piece, wherein the limiting piece is used for limiting the movement of the ejector pin piece (15) when the ejector pin piece (15) moves to a preset position; the limiting piece comprises a clamping rod (11) and a limiting rod (13), the ejector pin piece (15) is connected with the clamping rod (11), the length direction of the clamping rod (11) is consistent with the moving direction of the ejector pin piece (15), and a plurality of clamping positions are arranged on the clamping rod (11) at intervals along the length direction;

The limiting rod (13) is hinged to the supporting piece (7), and one end of the limiting rod (13) can be abutted with one of the clamping positions so as to limit the movement of the ejector pin piece (15);

The middle part of the limiting rod (13) is hinged with the supporting piece (7), one end, far away from the limiting rod (13), of the limiting rod is an operation end, which is abutted against the clamping rod (11), and the operation end is used for driving the limiting rod (13) to rotate around the hinged position of the limiting rod (13) and the supporting piece (7), so that one end, close to the clamping rod (11), of the limiting rod (13) is abutted against the clamping position of the clamping rod (11) or one end, close to the clamping rod (11), of the limiting rod (13) is separated from the clamping position of the clamping rod (11);

The clamping position is a convex block or a groove.

2. A press pin device according to claim 1, characterized in that the elastic means is a spring (8).

3. The pin pressing device according to claim 1 or 2, further comprising a handle connected to the ejector pin member (15) for pushing the ejector pin member (15) to move closer to the fixing member (101).

4. A pin pressing device according to claim 3, characterized in that the handle comprises an operating lever (9) and a connecting rod (6), the operating lever (9) being hinged to the support (7) near one end of the top pin (15), the connecting rod (6) being connected between the operating lever (9) and the top pin (15), and one end of the connecting rod (6) being hinged to the operating lever (9), the other end of the connecting rod (6) being hinged to the top pin (15).

5. The pin pressing device according to claim 4, further comprising a fixing frame (1), wherein one of the side walls of the fixing frame (1) serves as the fixing member (101), the supporting member (7) is a supporting rod connected to the fixing frame (1), and the pin pressing member (15) and the elastic member are provided in the frame of the fixing frame (1).

6. The pin pressing device according to claim 5, characterized in that the ejector pin member (15) includes a slider (5) and an ejector pin rod (4), the slider (5) being slidably provided on the fixed frame (1), the elastic member being provided between the slider (5) and the fixed member (101); the ejector pin rod (4) is connected to one side, far away from the fixing piece (101), of the sliding block (5), and the ejector pin rod (4) is used for being abutted with the pin shaft so as to push the pin shaft.

7. The pin pressing device according to claim 6, wherein the guide member is a guide rod (3) arranged on the fixed frame (1), guide holes are coaxially formed in the sliding block (5) and the pin pushing rod (4), and the sliding block (5) and the pin pushing rod (4) are slidably sleeved on the guide rod (3) through the guide holes.

8. The pin pressing device according to claim 5, characterized in that the detent lever (11) is provided between the fixing member (101) and the knock pin member (15), and the detent lever (11) is located below the elastic member, and the detent of the detent lever (11) is provided on the lower side of the detent lever (11);

The fixed frame (1) is provided with spacing spring (14) corresponding to the below of screens pole (11), the upper end of spacing spring (14) with spacing pole (13) are close to one end of screens pole (11) is connected, just spacing spring (14) have make spacing pole (13) are close to one end of screens pole (11) to the trend that screens pole (11) removed.

9. The pin pressing device according to claim 8, characterized in that a limiting block (12) is further arranged on the supporting piece (7), and the limiting block (12) is arranged above the hinging position of the limiting rod (13) and the supporting piece (7).

10. The pin pressing device according to claim 7, wherein a receiving space for a member to be mounted is provided at an end of the fixing frame (1) away from the fixing member (101), and a positioning member (2) for positioning the member to be mounted is provided to the fixing frame (1) corresponding to the receiving space.

11. The pin pressing device according to claim 10, characterized in that a positioning hole (16) is provided on the side of the fixing frame (1) opposite to the fixing member (101), the positioning hole (16) being coaxially provided with the guide rod (3);

The positioning holes (16) are used for positioning the pin shaft of the piece to be mounted.

12. A pin pressing device according to claim 3, characterized in that the pin pressing device further comprises an extension bar (10), the extension bar (10) being detachably connectable with the handle.