Pneumatic pinning device

Abstract

The present invention relates to a pneumatic pinning device, including a base, which is installed on a base component that needs to be inserted or pulled out by welding or other means, a bracket is provided on one side of the base, a gas / oil cylinder is installed on the bracket, one end of the pin shaft is assembled on the base, and the other end is assembled with a bolt, an inner polymer ring, an outer polymer ring and a flower nut, the inner polymer ring is installed on the inner side of the end of the pin shaft, and the outer polymer ring is installed on the outer side of the end of the pin shaft, and the inner and outer polymer rings are compressed by the flower nut, and the pin shaft is threadedly connected with the piston rod of the gas / oil cylinder through the other end of the bolt, and the pin shaft is driven to reciprocate by the extension or retraction of the piston rod of the gas / oil cylinder to realize the action of inserting or pulling out the pin. The present invention has a simple structure, a compact and capable layout, is easy to manufacture, effectively eliminates the connection gap between the pin shaft and the piston rod, and greatly reduces the impact noise.

Description

Technical Field

[0001] The invention relates to the field of engineering machinery, and in particular to a pneumatic pinning device that can be used on engineering machinery or automation equipment. Background Art

[0002] With the development of science and technology, construction machinery has been widely used in various occasions many years ago. In the prior art, the common pin plugging and pulling devices in construction machinery are mainly driven directly by linear motors, oil cylinders or air cylinders. Some of the floating parts connecting the piston rod and the pin shaft use joint bearings, some use ball springs, and some have more complicated connection methods and structures. The pin plugging and pulling devices connected in these ways have the following shortcomings: 1. The structure is complex and the manufacturing cost is high. Due to the large number of parts, the difficulty of maintenance is increased; 2. The connection gap between the piston rod and the pin shaft will cause shaking, reducing the stability of the plugging and pulling action; 3. The frequent plugging and pulling process is very likely to cause wear of the connecting parts, reducing its service life; 4. As the cylinder or oil cylinder is extended or retracted, a large impact noise will be generated during the frequent plugging and pulling process, affecting the production environment. Summary of the invention

[0003] In view of the above problems, the technical problem to be solved by the present invention is to provide a pneumatic pin insertion device to eliminate the connection gap between the piston rod and the pin shaft and reduce the impact noise during the pin insertion and extraction process.

[0004] The technical solution of the present invention is as follows: A pneumatic pinning device comprises a base, which is mounted on a base component that needs to be inserted or pulled out, a pin shaft is arranged on the base, a bracket for installing a driving component is arranged on one side of the base, a gas / oil cylinder is mounted on the bracket, a piston rod of the gas / oil cylinder is connected to one end of the pin shaft, and the pin shaft is driven to reciprocate by extending or retracting the gas / oil cylinder piston rod to realize the action of inserting or pulling out the pin, a bolt is assembled at one end of the pin shaft, an inner polymer ring and an outer polymer ring are arranged on the pin shaft, wherein the inner polymer ring is arranged on the inner side of the end of the pin shaft, and the outer polymer ring is arranged on the outer side of the end of the pin shaft, a flower nut for adjusting tightness is also assembled on the bolt, the flower nut is located on one side of the outer polymer ring, a protective pad is arranged between the flower nut and the outer polymer ring, and the pin shaft is threadedly connected to the piston rod of the gas / oil cylinder through the other end of the bolt; a mounting hole is arranged on the bracket, and the piston rod of the gas / oil cylinder is connected to the pin shaft through the mounting hole.

[0005] Furthermore, the bracket is a U-shaped structure with one end open, and a lug is extended outward from both sides of the open end respectively, and the bracket is installed on the base by passing screws and gaskets through the lugs.

[0006] Furthermore, a reinforcing rib plate is fixedly provided on the left and right outer sides of the bracket respectively. The rib plate is transversely arranged on both sides of the bracket, and the width at one end of the lug is greater than the width at the other end.

[0007] Furthermore, a fixing block is provided on the bracket, a threaded hole is provided on the fixing block, the gas / oil cylinder is installed on the fixing block by means of screws, spring washers and flat washers, the threaded holes on the fixing block are connected with the mounting holes on the bracket, and the piston rod of the gas / oil cylinder passes through the hole on the fixing block and the mounting hole on the bracket and is connected with the pin shaft.

[0008] Furthermore, a guide hole is provided on the base, and the pin shaft is inserted into the guide hole, and the pin shaft is driven to move in the guide hole by the piston rod of the gas / oil cylinder.

[0009] Furthermore, one end of the bolt is threadedly connected to the pin shaft, and the other end is threadedly connected to the piston rod of the gas / oil cylinder. The end of the bolt connected to the piston rod of the gas / oil cylinder is provided with a through hole that transversely penetrates the bolt.

[0010] Furthermore, a through hole is provided at the end of the piston rod of the gas / oil cylinder and runs through the piston rod transversely.

[0011] Furthermore, when the pin shaft and the piston rod of the gas / oil cylinder are assembled in place, the through hole at the end of the bolt corresponds to the through hole at the end of the piston rod of the gas / oil cylinder, and a cotter pin for preventing loosening is passed through the two corresponding through holes.

[0012] Furthermore, the inner polymer ring and the outer polymer ring are made of polyurethane or rubber.

[0013] Furthermore, travel detection switches are installed at the front and rear ends of the bracket.

[0014] Based on the above technical solution, the present invention has at least the following beneficial effects compared with the prior art:

[0015] The present invention has a compact and neat structure, and the connection between the pin shaft and the piston rod of the gas / oil cylinder is filled with flexible materials, thereby eliminating the connection gap and greatly reducing the impact noise. At the same time, anti-loosening measures are taken to improve the stability of the pin insertion and pin extraction actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric view of the present invention;

[0017] Figure 2 is a top view of the present invention;

[0018] Figure 3 yes Figure 2 Section view along section line AA;

[0019] Figure 4 yes Figure 3 A magnified detail view of the .

[0020] In the figure: 1-base, 2-bracket, 3-fixing block, 4-gas / oil cylinder, 5-pin shaft, 6-bolt, 7-inner polymer ring, 8-outer polymer ring, 9-protection pad, 10-flower nut, 11-cotter pin, 12-screw, 13-spring washer, 14-flat washer, 211-lug, 212-rib plate. DETAILED DESCRIPTION

[0021] The technical solutions of the embodiments of the present invention are described clearly and completely below in conjunction with the drawings of the specification so that those skilled in the art can better understand the technical solutions of the present invention. The embodiments described here are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] In the present invention, unless otherwise clearly specified or limited, the terms "installation", "fixation", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4The figure shows a schematic embodiment of the pneumatic pin-penetrating device provided by the present invention. In the schematic embodiment, the pneumatic pin-penetrating device comprises a base 1, which is mounted on a base member that needs to be pinned or pulled out by welding or other means, and a pin shaft 5 is mounted on the base 1. A bracket 2 for mounting a driving member is provided on one side of the base 1. A gas / oil cylinder 4 is mounted on the bracket 2, and a piston rod of the gas / oil cylinder 4 is connected to one end of the pin shaft 5. One end of the pin 5 is mounted on the base 1, and the other end is equipped with a bolt 6. An inner polymer ring 7 and an outer polymer ring 8 are mounted on the pin 5, wherein the inner polymer ring 7 is mounted on the inner side of the end of the pin 5, and the outer polymer ring 8 is mounted on the outer side of the end of the pin 5. A flower nut 10 for adjusting the tightness is also mounted on the bolt 6. The flower nut 10 is mounted on one side of the outer polymer ring. The inner polymer ring 7 and the outer polymer ring 8 can be compressed by rotating the flower nut 10. A protective pad 9 is mounted between the flower nut 10 and the outer polymer ring 8. The pin 5 is threadedly connected to the piston rod of the gas / oil cylinder 4 through the other end of the bolt 6. A mounting hole is provided on the bracket 2, and the piston rod of the gas / oil cylinder 4 passes through the mounting hole to connect with the pin 5. The pin 5 is driven to reciprocate by the extension or retraction of the piston rod of the gas / oil cylinder 4 to achieve the action of inserting or pulling the pin.

[0024] The pneumatic pin insertion device provided by the present invention can eliminate the connection gap between the pin shaft and the piston rod of the gas / oil cylinder through the above-mentioned mechanical structure, reduce the impact noise, and improve the stability of the pin insertion and pin removal actions.

[0025] In the schematic embodiment of the pneumatic pin-threading device provided by the present invention, the bracket 2 is a U-shaped structure with an opening at one end, and a lug 211 is extended outward on both sides of the opening end, and the bracket 2 is installed on the base 1 by screws and gaskets through the lug 211. A rib plate 212 for strengthening is fixedly provided on the left and right outer sides of the bracket 2, and the rib plate 212 is transversely arranged on both sides of the bracket 2, and the width at one end of the lug 211 is greater than the width at the other end. The rib plate 212 can effectively increase the strength of the bracket 2 and prevent its deformation. Since the part where the pin shaft 5 is connected to the piston rod of the gas / oil cylinder is located inside the bracket, the bracket 2 is designed as a U-shaped structure. Through the design of the upper and lower openings, it is possible to observe whether the pins are in place at any time, and it is also convenient for maintenance.

[0026] In the schematic embodiment of the pneumatic pin-threading device provided by the present invention, a fixed block 3 is also welded on the bracket 2, and a threaded hole for assembly is provided on the fixed block 3. The gas / oil cylinder or linear motor is installed on the fixed block 3 by means of screws 12, spring washers 13, and flat washers 14. The mounting hole on the fixed block 3 is arranged to be connected with the mounting hole on the bracket 2, and the piston rod of the gas / oil cylinder 4 passes through the hole on the fixed block 3 and the mounting hole on the bracket 2 and is connected to the pin shaft 5.

[0027] In the schematic embodiment of the pneumatic pin insertion device provided by the present invention, a guide hole is provided on the base 1, and the pin shaft 5 is inserted into the guide hole. The piston rod of the air / oil cylinder 4 drives the pin shaft 5 to reciprocate in the guide hole and guides the pin shaft 5, thereby realizing stable pin insertion and pin removal actions.

[0028] In the schematic embodiment of the pneumatic pinning device provided by the present invention, one end of the bolt 6 is threadedly connected to the pin shaft 5, and the other end is threadedly connected to the piston rod of the gas / oil cylinder 4. The end of the bolt 6 connected to the piston rod of the gas / oil cylinder 4 is provided with a through hole that runs transversely through the bolt. A through hole that runs transversely through the piston rod is provided at the end of the piston rod of the gas / oil cylinder 4. When the pin shaft 5 and the piston rod of the gas / oil cylinder 4 are assembled in place, the through hole at the end of the bolt 6 corresponds to the through hole at the end of the piston rod of the gas / oil cylinder 4, and a cotter pin is inserted in the two corresponding through holes, which can effectively prevent the connection between the pin shaft 5 and the piston rod of the gas / oil cylinder from loosening during the process of inserting or pulling the pin, thereby ensuring the stability of the insertion and pulling actions.

[0029] In the schematic embodiment of the pneumatic pinning device provided by the present invention, the inner polymer ring 7 and the outer polymer ring 8 are made of flexible materials. The inner polymer ring 7 is assembled on the inner side of the end of the pin shaft 5 connected to the piston rod of the gas / oil cylinder 4 by pressing, and the outer polymer ring 8 is assembled on the outer side of the end of the pin shaft 5 connected to the piston rod of the gas / oil cylinder 4 by pressing. Since the connection part between the pin shaft 5 and the piston rod of the gas / oil cylinder 4 is filled with polyurethane material, the connection gap is effectively eliminated, and the impact noise during the insertion and removal of the pin is reduced. In addition, the inner polymer ring 7 and the outer polymer ring 8 have an automatic self-aligning function, which can reduce the manufacturing and installation accuracy of the oil cylinder or cylinder mounting support.

[0030] The pneumatic pinning device provided by the present invention has a simple structure, a compact and neat layout, is easy to manufacture, and has a low manufacturing cost. It can be used as an independent module and conveniently transplanted to certain specific parts of industrial production platforms or engineering machinery. Travel detection switches can be installed at the front and rear ends of the bracket 2 to facilitate automatic monitoring and control.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic pin insertion device, comprising a base, the base being mounted on a base member that needs to be inserted or pulled out, a pin shaft being arranged on the base, a bracket for mounting a driving member being arranged on one side of the base, a gas / oil cylinder being mounted on the bracket, a piston rod of the gas / oil cylinder being connected to one end of the pin shaft, and the pin shaft being driven to reciprocate by the extension or retraction of the gas / oil cylinder piston rod to achieve the action of inserting or pulling out the pin, characterized in that: One end of the pin shaft is equipped with a bolt, and an inner polymer ring and an outer polymer ring are arranged on the pin shaft, wherein the inner polymer ring is arranged on the inner side of the end of the pin shaft, and the outer polymer ring is arranged on the outer side of the end of the pin shaft, and a flower nut for adjusting tightness is also arranged on the bolt, and the flower nut is located on one side of the outer polymer ring, and a protective pad is arranged between the flower nut and the outer polymer ring, and the pin shaft is threadedly connected to the piston rod of the gas / oil cylinder through the other end of the bolt; The bracket is provided with a mounting hole, and the piston rod of the gas / oil cylinder passes through the mounting hole and is connected with the pin shaft.

2. The pneumatic pinning device according to claim 1, characterized in that: The bracket is a U-shaped structure with one end open, and a lug is extended outwards from both sides of the open end. The bracket is installed on the base by passing screws and gaskets through the lugs.

3. The pneumatic pinning device according to claim 1 or 2, characterized in that: A reinforcing rib plate is fixedly provided on the left and right outer sides of the bracket respectively. The rib plate is transversely arranged on both sides of the bracket, and the width of the rib plate at one end of the lug is greater than the width of the other end.

4. The pneumatic pinning device according to claim 1, characterized in that: A fixing block is provided on the bracket, and a threaded hole is provided on the fixing block. The gas / oil cylinder is installed on the fixing block by means of screws, spring washers and flat washers. The threaded hole on the fixing block is connected with the mounting hole on the bracket, and the piston rod of the gas / oil cylinder passes through the hole on the fixing block and the mounting hole on the bracket and is connected with the pin shaft.

5. The pneumatic pinning device according to claim 1, characterized in that: A guide hole is provided on the base, and the pin shaft is inserted into the guide hole. The pin shaft is driven to move in the guide hole by the piston rod of the gas / oil cylinder.

6. The pneumatic pinning device according to claim 1, characterized in that: One end of the bolt is threadedly connected to the pin shaft, and the other end is threadedly connected to the piston rod of the gas / oil cylinder. The end of the bolt connected to the piston rod of the gas / oil cylinder is provided with a through hole that runs horizontally through the bolt.

7. The pneumatic pinning device according to claim 6, characterized in that: A through hole is provided at the end of the piston rod of the gas / oil cylinder and runs through the piston rod transversely.

8. The pneumatic pinning device according to claim 6 or 7, characterized in that: When the pin shaft and the piston rod of the gas / oil cylinder are assembled in place, the through hole at the end of the bolt corresponds to the through hole at the end of the piston rod of the gas / oil cylinder, and a cotter pin for preventing loosening is inserted in the two corresponding through holes.

9. The pneumatic pinning device according to claim 1, characterized in that: The inner polymer ring and the outer polymer ring are made of polyurethane or rubber.

10. The pneumatic pinning device according to claim 1, characterized in that: The front and rear ends of the bracket are equipped with travel detection switches.

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