CN117699705A - Positioning device for shaft sleeve bolt hole of scissor arm and positioning device for scissor arm - Google Patents

Abstract

The utility model relates to a axle sleeve bolt hole locating device discloses a scissor arm axle sleeve bolt hole positioner and scissor arm positioner, and this scissor arm axle sleeve bolt hole positioner includes locating pin and actuating mechanism, the locating pin pass through the connecting piece with actuating mechanism connects, actuating mechanism configures to can drive the locating pin rotates behind the settlement angle towards the bolt hole removal of axle sleeve and inserts the bolt hole of axle sleeve. The shearing fork arm shaft sleeve bolt hole positioning device can achieve automatic positioning and improves operation efficiency.

Description

Positioning device for shaft sleeve bolt hole of scissor arm and positioning device for scissor arm

Technical Field

The application belongs to axle sleeve bolt hole locating device, and specifically relates to a scissor arm axle sleeve bolt hole locating device. In addition, the invention also relates to a shearing arm positioning device.

Background

The shaft sleeve of the fork arm of the fork lifting type aerial work platform is provided with bolt holes along the radial direction on the outer peripheral surface, and the connecting line of the bolt holes on the two sides of the shaft sleeve is required to be kept horizontal during rivet welding.

As shown in fig. 1, the existing positioning tool for the bolt hole of the scissor arm shaft sleeve comprises a mounting piece 1a and a supporting plate 2a (a hole), wherein the mounting piece 1a is connected with the supporting plate 2a through bolts, a bolt hole positioning pin 3a reciprocates in the hole of the supporting plate 2a, and the bolt hole positioning pin 3a is manually inserted into the bolt hole to keep the connecting line of the bolt holes on two sides of the shaft sleeve 4 horizontal. Every axle sleeve all needs the manual work to adjust in proper order, consumes man-hour, and positioning accuracy is poor.

The positioning tool for the bolt holes of the scissor arm shaft sleeve cannot automatically position the workpiece, the bolt hole positioning pins 3a are manually inserted into the bolt holes to ensure the hole position accuracy, each shaft sleeve 4 is manually and sequentially positioned (a plurality of shaft sleeves 4 needing to be positioned exist on the same workpiece), and the operation efficiency is slower.

Disclosure of Invention

The utility model aims at providing a cut fork arm axle sleeve bolt hole positioner, realize automatic positioning, promote operating efficiency. It is a second object of the present application to provide a scissor arm positioning apparatus.

To achieve the above object, an aspect of the present application provides a positioning device for bolt holes of a scissor arm shaft sleeve, including a positioning pin and a driving mechanism, the positioning pin is connected with the driving mechanism through a connecting piece, and the driving mechanism is configured to be capable of driving the positioning pin to rotate for a set angle and then move towards the bolt holes of the shaft sleeve and insert into the bolt holes of the shaft sleeve.

In some embodiments, the drive mechanism is a slewing cylinder.

In some embodiments, the drive mechanism further comprises a mount on which the drive mechanism is mounted.

In some embodiments, the driving mechanism comprises a cylinder body and a piston rod positioned in the cylinder body, and the end part of the piston rod is connected with the connecting piece through a vertical mounting plate on the mounting seat.

In some embodiments, the vertical mounting plate is provided with a stopper toward an upper portion of a surface of the connector.

In some embodiments, the limiting member is provided with a limiting groove facing the connecting member.

In some embodiments, the cylinder block is provided with a protective cover on an outer side.

In some embodiments, the connector further comprises a spring seat disposed at an end of the connector away from the driving mechanism, the spring seat is disposed on a first face of the connector, the locating pin is embedded in the spring seat, and an end of the locating pin protrudes from a second face of the connector, the first face and the second face are disposed opposite to each other, and the second face faces the driving mechanism.

In some embodiments, a cavity for the dowel portion to be embedded in the spring seat is provided in the spring seat, and a compression spring is disposed in the cavity and sleeved on the dowel.

Another aspect of the present application provides a scissor arm positioning device, provided with the scissor arm bushing bolt hole positioning device described above.

Through the technical scheme, the locating pin is connected with the driving mechanism through the connecting piece, and the driving mechanism can drive the locating pin to rotate for a set angle, and then moves towards the bolt hole of the shaft sleeve and is inserted. Therefore, automatic positioning can be realized, and the operation efficiency is improved.

Additional features and advantages of embodiments of the present application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain, without limitation, the embodiments of the present application. Other figures may be made from the structures shown in these figures without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a schematic structural view of a prior art scissor arm bushing bolt hole positioning tooling;

FIG. 2 is a schematic diagram of a positioning process of a scissor arm bushing bolt hole positioning device in an embodiment of the application;

FIG. 3 is a schematic view of a locating device for bolt holes of a scissor arm bushing in a specific embodiment of the application;

FIG. 4 is a schematic view of an initial positioning state of a scissor arm bushing bolt hole positioning device according to an embodiment of the application;

FIG. 5 is a schematic cross-sectional view of a scissor arm bushing bolt hole positioning apparatus in an embodiment of the application;

fig. 6 is an effect diagram of an assembled workpiece of the scissor arm positioning apparatus in an embodiment of the application.

Description of the reference numerals

1 locating pin 2 actuating mechanism

21 cylinder body 22 piston rod

23 protecting cover 24 first screw

25 second screw 3 connecting piece

4 axle sleeve 5 mount pad

51 vertical mounting plate 6 limiting piece

7 spring seat 71 compression spring

73 third screw 8 air pipe

9 rectangular pipe work piece 10 scissors fork arm axle sleeve bolt hole positioner

Detailed Description

The following detailed description of specific embodiments of the present application refers to the accompanying drawings. It should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application.

All terms used herein have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that in the description of the present application, unless otherwise indicated, the indicated orientation or positional relationship is merely for convenience of description of the present application and to simplify the description, and does not indicate or imply that the devices or elements in question must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the present application. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

As shown in fig. 2 to 5, the embodiment of the application provides a scissor arm shaft sleeve bolt hole positioning device 10, which comprises a positioning pin 1 and a driving mechanism 2, wherein the positioning pin 1 is connected with the driving mechanism 2 through a connecting piece 3, and the driving mechanism 2 is configured to drive the positioning pin 1 to rotate for a set angle and then move towards a bolt hole of a shaft sleeve 4 and insert into the bolt hole of the shaft sleeve 4. Thus, the positioning pin 1 can automatically position the bolt hole of the shaft sleeve 4, and the positioning operation efficiency is improved.

The shearing arm shaft sleeve bolt hole positioning device can be applied to specific tools, for example, the shearing arm shaft sleeve bolt hole positioning device shown in fig. 6, and the technical scheme and the technical effect can be better described.

In some embodiments, the drive mechanism 2 may be a revolving cylinder.

In some embodiments, as shown in fig. 2, further comprising a mount 5, the drive mechanism 2 is mounted on the mount 5.

Specifically, the drive mechanism 2 comprises a cylinder block 21 and a piston rod 22, the piston rod 22 being mounted in the cylinder block 21, the end of the piston rod 22 passing through a vertical mounting plate 51 on the mounting 5 and being connected to the connecting piece 3, specifically the connecting piece 3 being fastened to the end of the piston rod 22 by means of a second screw 25, which second screw 25 may be a hexagon socket head screw or other suitable screw. The piston rod 22 of the revolving cylinder can drive the positioning pin 1 to rotate according to a preset angle, and then drive the positioning pin 1 to stretch along the axial direction of the piston rod 22. As shown in fig. 6, in the scissor arm positioning device, a rectangular pipe workpiece 9 is positioned by using a bracket, and a mounting hole for mounting a shaft sleeve 4 is formed in the side surface of the rectangular pipe workpiece 9 according to design requirements, and when positioning and assembling are performed, the shaft sleeve 4 is firstly placed at the end part of a telescopic rod of an air cylinder, the telescopic rod of the air cylinder extends out, and the shaft sleeve 4 is aligned and pressed at the mounting hole position of the side surface of the rectangular pipe workpiece 9. In order to facilitate the connection between the different scissor arms through the pin shafts, the connection line of the bolt holes at the two sides of the shaft sleeve 4 is usually required to be kept horizontal, so that the pin shafts can be conveniently inserted. The utility model provides a cut fork arm axle sleeve bolt hole positioner 10 is located the outside of the side of rectangular pipe work piece 9, starts actuating mechanism 2, and control locating pin 1 is rotated preset angle by the side position upper position of actuating mechanism 2, and after locating pin 1 rotated in place, locating pin 1 keeps the level to the bolt hole of axle sleeve 4 side, then the piston rod 22 of actuating mechanism 2 stretches out, drives the bolt hole of locating pin 1 insert axle sleeve 4 side, and then realizes that axle sleeve 4 both sides bolt hole line keeps the level. As shown in fig. 6, in the scissor arm positioning device, the rectangular pipe workpiece 9 needs to be positioned first, and the initial position of the positioning pin 1 is designed to be located at the side position of the driving mechanism 2, so that interference to the positioning process of the rectangular pipe workpiece 9 can be effectively prevented.

It should be noted that, the driving mechanism 2 may be a rotary cylinder, which is a device capable of driving the workpiece to rotate and making a reciprocating linear motion under the action of the piston rod, and is well known to those skilled in the art, and therefore will not be described in detail. For example, patent document CN213628233U discloses a bidirectional zero-turn cylinder including a cylinder body, a first piston rod, a second piston rod, and a reversing plug. The axes of the first piston rod and the second piston rod are coincident and are arranged in the cylinder body in a sliding manner. The first piston rod is slidingly and non-rotatably connected to the second piston rod. The first piston rod only slides relative to the second piston rod without rotating. One end of the first piston rod protrudes out of the cylinder body and is used for connecting, holding and positioning a workpiece. The second piston rod is provided with a first chute and a second chute which are communicated and have different concave depths. The reversing plug is arranged on the cylinder body in a sliding way. The cylinder body is provided with a first air hole, a second air hole and a third air hole. The first air hole and the second air hole are respectively ventilated to respectively drive the second piston rod to slide in the cylinder body along opposite directions. The third air hole is ventilated to drive the reversing plug to slide from the first sliding groove to be inserted into the second sliding groove. The first sliding groove comprises a first rotating part and a first sliding part which are communicated. The second sliding groove comprises a second rotating part and a second sliding part which are communicated. When the reversing plug slides respectively at the first rotating part and the second rotating part, the second piston rod rotates in opposite directions so as to realize the rotation of the bidirectional zero-rotation cylinder in two directions. In the case of the rotary cylinder described in patent document CN213628233U, the positioning pin 1 is attached to the end of the first piston rod protruding outside the cylinder body via the connecting member 3. Alternatively, patent document CN202431638U discloses a novel revolving cylinder, in which a cylinder body, a bottom cover, an upper cylinder body and a cylinder pull rod form a sealed space during operation, a piston and a piston seal ring divide the sealed space into two parts, and a revolving shaft and the piston are connected into a whole through screws. When any side is in air intake, the piston and the rotary shaft will do up-down plus rotary motion, so as to drive the cylinder pull rod to do up-down plus rotary motion; the spiral groove of the rotating shaft will generate a rotating motion when passing the guide pin, otherwise, the spiral groove does a straight up-and-down motion. In the case of the revolving cylinder described in patent document CN202431638U, the positioning pin 1 is attached to one end of the cylinder rod protruding outside the cylinder body via the connecting member 3. Alternatively, other suitable rotary cylinders may be employed for the drive mechanism 2 of the present application.

In some embodiments, the driving mechanism 2 may be a revolving cylinder, and is connected to the air pipe 8, for flushing air into the revolving cylinder to control the revolving and telescopic movement of the revolving cylinder, and the air pipe 8 may be provided with a speed regulating valve for regulating the movement speed of the revolving cylinder, where the speed regulating valve is a valve for regulating the flow to change the movement speed of the working mechanism, which is well known to those skilled in the art, and therefore will not be described herein.

In some embodiments, as shown in fig. 2, the upper part of the surface of the vertical mounting plate 51 facing the connection member 3 is provided with a stopper 6, in particular, the stopper 6 is fastened on the side of the vertical mounting plate 51 by a first screw 24, which may be a hexagon socket head screw or other suitable screw. The connecting piece 3 can be a kind of hold-down arm, and at the in-process that connecting piece 3 drove locating pin 1 to remove towards the bolt hole of axle sleeve 4 side, when connecting piece 3 was blocked by locating part 6, locating pin 1 just inserted in the bolt hole of axle sleeve 4 side simultaneously, can prevent that locating pin 1 from producing excessive collision to axle sleeve 4.

Specifically, as shown in fig. 2, the limiting piece 6 is provided with a limiting groove, and in the process that the connecting piece 3 drives the positioning pin 1 to move towards the bolt hole on the side face of the shaft sleeve 4, the connecting piece 3 can be just inserted into the limiting groove, so that the positioning precision of the positioning pin 1 is higher.

In some embodiments, as shown in fig. 5, the outer side of the cylinder block 21 is provided with a protective cover 23.

In some embodiments, as shown in fig. 5, a spring seat 7 is further provided, the spring seat 7 is provided at an end of the connecting member 3 remote from the driving mechanism, the spring seat 7 is provided on the first face of the connecting member 3 by a third screw 73, and the third screw 73 may be a hexagon socket head screw or other suitable screw. The locating pin 1 is embedded in the spring seat 7, and the end part of the locating pin 1 protrudes out of the second surface of the connecting piece 3, the first surface of the connecting piece 3 is an end surface facing away from the driving mechanism 2, the second surface of the connecting piece 3 is an end surface facing towards the driving mechanism 2, and the first surface and the second surface of the connecting piece 3 are oppositely arranged. As shown in fig. 1, the prior art mounting member 1a is in bolted connection with the support plate 2a (with a hole), so that the fit clearance is large, and the bolt hole positioning pin 3a reciprocates in the support plate 2a (with a hole), so that the fit clearance is large, and the fit clearances of the two positions are accumulated, so that the stability of the positioning accuracy of the bolt holes on the two sides of the final shaft sleeve 4 can be greatly affected. Compared with the prior art, the connecting piece 3 is fastened at the end part of the piston rod 22 through the second screw 25, so that the fit clearance is smaller, and the positioning precision is higher; in addition, the locating pin 1 is embedded in the spring seat 7, the fit clearance is smaller, and the locating precision is higher.

Specifically, a cavity is provided in the spring seat 7, the cavity can accommodate a portion of the positioning pin 1 embedded in the spring seat 7, and a compression elastic member 71 is disposed in the cavity, and the compression elastic member 71 is preferably sleeved on the positioning pin 1. The compression elastic member 71 can be an elastic member such as a spring, rubber, silica gel, etc., and can play a buffering role on the bolt hole of the side surface of the shaft sleeve 4, so as to prevent the shaft sleeve 4 from being damaged by the positioning pin 1 caused by overlarge air pressure.

In addition, as the bolt hole locating pin 3a of the scissor arm shaft sleeve bolt hole locating tool shown in fig. 1 is closer to a spot welding area, welding slag is easy to accumulate, and the joint of the bolt hole locating pin 3a and the supporting plate 2a is blocked, so that the effective usability of the tool is affected. However, the locating pin 1 is embedded in the spring seat 7, the blocking of the joint of the locating pin 1 and the connecting piece 3 caused by spattering of welding slag is not required to be considered, and the effective usability of the tool is guaranteed.

For a better understanding of the technical concepts of the present application, the following description is made in connection with relatively comprehensive technical features.

As shown in fig. 2 to 5, the preferred embodiment of the present application provides a scissor arm shaft sleeve bolt hole positioning device 10, which comprises a positioning pin 1, a driving mechanism 2, a connecting piece 3, a mounting seat 5 and a spring seat 7, wherein the connecting piece 3 can be a pressing arm, the spring seat 7 is arranged on a first surface of the connecting piece 3 through a third screw 73, the positioning pin 1 is embedded in the spring seat 7, and the end part of the positioning pin 1 protrudes out of a second surface of the connecting piece 3, a cavity is arranged in the spring seat 7, the cavity can accommodate a part of the positioning pin 1 embedded in the spring seat 7, and a compression elastic piece 71 is arranged in the cavity, and the compression elastic piece 71 is preferably sleeved on the positioning pin 1. The locating pin 1 is connected with the driving mechanism 2 through the connecting piece 3, comprises a cylinder body 21 and a piston rod 22 with the driving mechanism 2, the piston rod 22 is installed in the cylinder body 21, the end part of the piston rod 22 passes through a vertical mounting plate 51 on the mounting seat 5 and is connected with the connecting piece 3, the connecting piece 3 is fastened at the end part of the piston rod 22 through a second screw 25, a limiting piece 6 is arranged on the upper part of the surface of the vertical mounting plate 51, facing the connecting piece 3, of the limiting piece 6, and a limiting groove is formed in the limiting piece 6, facing the connecting piece 3.

Based on the above technical scheme, the process of locating bolt holes on two sides of the shaft sleeve 4 by the shearing fork arm shaft sleeve bolt hole locating device 10 is as follows:

fig. 4 shows the initial state of the positioning pin 1, the driving mechanism 2 is started, the driving connecting piece 3 is rotated from side to upper, that is, the positioning pin 1 is driven to rotate from side to upper, and after the positioning pin 1 rotates in place, the connecting piece 3 is aligned with the limiting piece 6 on the vertical mounting plate 51. Then, the driving mechanism 2 drives the connecting piece 3 to move towards the limiting piece 6 until the connecting piece 3 is blocked by the limiting piece 6, and at the moment, as shown in fig. 3, the positioning pin 1 is just inserted into the bolt holes on the side face of the shaft sleeve 4, so that the connecting line of the bolt holes on the two sides of the shaft sleeve 4 is kept horizontal. After the positioning of the bolt holes on the side face of the shaft sleeve 4 is completed, the driving mechanism 2 is started, the connecting piece 3 is driven to be far away from the limiting piece 6, and then the connecting piece 3 is driven to rotate to the side from the upper part, so that the positioning pin 1 is reset.

Through the operation, the automatic positioning of the bolt holes on the side face of the shaft sleeve 4 can be realized, the positioning pin 1 is not required to be inserted manually, the manual sequential adjustment is not required, the manufacturing time is saved, and the positioning efficiency is improved. Compared with the prior art, the connecting piece 3 is connected with the piston rod 22 of the driving mechanism 2 through the screw, so that the fit clearance is smaller, and the positioning precision is higher; compared with the prior art, the positioning pin 1 is embedded in the spring seat 7, so that the fit clearance is smaller, and the positioning precision is higher; the product manufacturing precision is improved. Adopt the gyration cylinder, can dodge the spot welding region of axle sleeve 4, and locating pin 1 embeds in spring holder 7, need not to consider locating pin 1 and connecting piece 3 junction jam that the welding slag splashes and lead to, guarantees the availability of frock.

As shown in fig. 6, the present application further provides a scissor arm positioning device, which is provided with the scissor arm shaft sleeve bolt hole positioning device 10 according to the above embodiments.

In the description of the present application, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. The utility model provides a scissor arm axle sleeve bolt hole positioner, its characterized in that includes locating pin (1) and actuating mechanism (2), locating pin (1) through connecting piece (3) with actuating mechanism (2) are connected, actuating mechanism (2) are configured to can drive behind locating pin (1) rotation settlement angle towards the bolt hole removal of axle sleeve (4) and insert the bolt hole of axle sleeve (4).

2. The scissor arm bushing bolt hole positioning device according to claim 1, characterized in that the driving mechanism (2) is a revolving cylinder.

3. The scissor arm bushing bolt hole positioning device according to claim 2, further comprising a mounting seat (5), wherein the drive mechanism (2) is mounted on the mounting seat (5).

4. A scissor arm bushing bolt hole positioning device according to claim 3, characterized in that the driving mechanism (2) comprises a cylinder body (21) and a piston rod (22) located in the cylinder body (21), the end of the piston rod (22) being connected with the connecting piece (3) through a vertical mounting plate (51) on the mounting base (5).

5. The scissor arm bushing bolt hole positioning device according to claim 4, characterized in that the upper part of the surface of the vertical mounting plate (51) facing the connecting piece (3) is provided with a limiting piece (6).

6. The scissor arm bushing bolt hole positioning device according to claim 5, characterized in that the limiting piece (6) is provided with a limiting groove facing the connecting piece (3).

7. A scissor arm bushing bolt hole positioning device according to claim 3, characterized in that the outer side of the cylinder body (21) is provided with a protective cover (23).

8. The scissor arm bushing bolt hole positioning device according to any one of claims 1 to 7, further comprising a spring seat (7), wherein the spring seat (7) is arranged at one end of the connecting piece (3) far away from the driving mechanism, the spring seat (7) is arranged on a first face of the connecting piece (3), the positioning pin (1) is embedded in the spring seat (7), and the end part of the positioning pin (1) protrudes out of a second face of the connecting piece (3), the first face is arranged opposite to the second face, and the second face faces towards the driving mechanism (2).

9. The scissor arm shaft sleeve bolt hole positioning device according to claim 8, characterized in that a cavity for the positioning pin (1) to be partially embedded in the spring seat (7) is arranged in the spring seat (7), and a compression elastic piece (71) sleeved on the positioning pin (1) is arranged in the cavity.

10. A scissor arm positioning device, characterized in that a scissor arm bushing bolt hole positioning device (10) according to any of claims 1 to 9 is provided.