CN211162970U - Multi-connecting-rod type lifting shaft clamping mechanism capable of self-locking upper dead point and lower dead point - Google Patents

Abstract

The utility model relates to a multi-link type lifting and clamping mechanism with self-locking upper and lower dead center positions, comprising a guide sliding block, a lifting rod, a clamping shaft, a pressing rod, a pin shaft mounting support, a locking push rod, a small sliding block and a spring The bracket, the spring plunger, the upper dead center position limit block and the lower dead center position limit block, the lifting rod is movably arranged in the guide slider, one end of the lifting rod is connected with the clamping shaft, and the other end of the lifting rod is connected with the clamping shaft. The pressure rod is connected, the pressure rod is connected with the pin shaft installation support, the pin shaft installation support is installed on the bottom plate, one end of the locking push rod is connected with the pressure rod, the other end of the locking push rod is connected with the small slider, the small slider The activity is set on the bottom plate, the spring bracket is fixed on the bottom plate, the spring plunger is installed on the spring bracket, the spring plunger is in contact with the small slider, the upper dead center position limit block and the bottom dead center position limit block are installed on the bottom plate superior. The utility model has the advantages of simple and reasonable structure, low cost, convenient operation and maintenance, low labor intensity, high degree of automation, and can meet the needs of use.

Description

The self-locking multi-link type lifting and clamping mechanism of the upper and lower dead center positions

technical field

The utility model relates to a tooling mechanism, in particular to a multi-link type lifting and clamping mechanism with self-locking upper and lower dead center positions, which belongs to the technical field of tooling fixtures.

Background technique

Fixture is an indispensable production auxiliary device in the industrial manufacturing process, and plays a very important role in the entire manufacturing system. In any process in the production process of the product, it is necessary to use a fixture to quickly, conveniently and safely install and fix the workpiece. Reasonable and efficient fixtures can not only greatly ensure the machining accuracy of workpieces, stabilize product quality, improve production efficiency, and reduce production costs, but also can improve workers’ working conditions, ensure safe production, and even expand the scope of machine tool technology. multipurpose".

There are many types of existing fixtures, such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. However, because the actual production processes of various products are ever-changing, and their conditions and requirements are also different, there are still some special ones. A utility model creation of special tooling fixtures. For example, in the manufacturing process of hydraulic cylinders, one of the important processes is that the cylinder barrel and the cylinder head need to be screwed together to assemble the cylinder as a whole. When tightening the assembly, workers need to hold a crowbar in one hand and insert a crowbar outside the cylinder barrel. The C-shaped grease nipple is stuck to prevent the cylinder barrel from rotating, and the other hand takes a wrench and screw it into the cylinder head until it is tight. In the assembly process of the oil cylinder, the method of manually clamping the cylinder with a crowbar is time-consuming and labor-intensive, and the labor intensity of the workers is very high, which greatly reduces the production efficiency, and it is difficult to ensure the consistency of product assembly quality.

At present, there is no mature and reliable special tooling fixture for the tightening and assembly process of the cylinder head and cylinder head among the oil cylinder manufacturers in my country. Most of the enterprises still use the above-mentioned crowbar to manually clamp the cylinder.

Therefore, it is particularly necessary to develop a set of simple structure, low cost, convenient and practical multi-link type lifting and clamping mechanism with self-locking upper and lower dead center positions, as a special tooling fixture for tightening and assembling the cylinder head.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and to provide a simple and reasonable structure design, safe and reliable, low cost, convenient operation and maintenance, reduce labor intensity of workers, improve the degree of automation, and good stability of assembly quality The self-locking multi-link type lifting and clamping mechanism of the upper and lower dead center positions.

The technical solution adopted by the utility model to solve the above problems is: the multi-link type lifting and clamping mechanism with self-locking upper and lower dead center positions includes a frame and a bottom plate, and the bottom plate is fixed on the frame, and is characterized in that: Including guide slider, lifting rod, clamping shaft, pressure rod, pin shaft mounting support, locking push rod, small slider, spring bracket, spring plunger, top dead center position limit block and bottom dead center position limit The lifting rod is movably arranged in the guide slider, one end of the lifting rod is connected with the clamping shaft, the other end of the lifting rod is connected with the pressing rod, the pressing rod is connected with the pin shaft installation support, and the pin shaft installation support is installed On the bottom plate, one end of the locking push rod is connected with the pressure rod, and the other end of the locking push rod is connected with the small slider, the small slider is movably arranged on the bottom plate, the spring bracket is fixed on the bottom plate, and the spring plunger is installed on the spring bracket On the upper side, the spring plunger is in contact with the small slider, and the upper dead center position limit block and the lower dead center position limit block are both installed on the bottom plate.

Preferably, the pressing rod of the present invention is provided with a pin shaft hole for connecting with the pin shaft mounting support, a U-shaped slot hole for connecting with the bottom of the lifting rod, and a pin shaft hole for connecting with the locking push rod from left to right. , and the U-shaped slot hole is located in the middle of the two pin holes.

Preferably, the bottom plate of the present invention is provided with a horizontal U-shaped slot hole, and the central axis of the horizontal U-shaped slot hole, the center position of the pin shaft hole of the pin shaft mounting support, and the central axis of the spring plunger are at the same level. altitude position.

Preferably, the left end of the pressing rod of the present invention is hinged with the pin shaft mounting support through the pin shaft, the right end of the pressing rod is hinged with one end of the locking push rod through the pin shaft, and the other end of the locking push rod is connected with the small slider through the pin shaft. Hinged.

Preferably, the small slider of the present invention is installed in the horizontal U-shaped slot hole of the bottom plate, and the small slider moves horizontally and linearly in the horizontal U-shaped slot hole.

Preferably, the lower end of the lifting rod according to the present invention is connected with the U-shaped slot hole of the pressing rod through a pin shaft.

Preferably, the lifting rod of the present invention is vertically installed in the guide sliding block to form a translational motion pair therewith.

Preferably, the spring bracket, the guide slider, the pin shaft mounting support, the upper dead center position limit block and the bottom dead center position limit block of the present invention are all fixed on the bottom plate by bolts.

Preferably, the base plate of the present invention is fixed on the frame by bolts.

Compared with the prior art, the utility model has the following advantages and effects: 1. The overall structure design is simple and reasonable, the cost is low, reliable and durable, the operation and maintenance are convenient, the labor intensity of workers is reduced, the degree of automation is improved, the assembly efficiency is improved, and the assembly quality is improved. Good stability; 2. Self-locking can be achieved at the upper and lower dead points of the lifting and clamping mechanism, and the self-locking force can be adjusted by changing the spring constant of the plunger spring and the compression length of the spring; 3. Good versatility, It has strong applicability. It only needs to adjust the structure of the clamping shaft, adjust the position of the upper and lower dead center limit blocks, and adjust the locking force. It is very suitable for the development of hydraulic cylinder products. It is used in the production and manufacturing fields of other industries.

Description of drawings

FIG. 1 is a schematic structural diagram of the lifting and clamping mechanism of the embodiment of the present invention at the top dead center position.

FIG. 2 is a schematic structural diagram of the lifting and clamping mechanism of the embodiment of the present invention at the bottom dead center position.

In the figure: frame 1, spring bracket 2, spring plunger 3, small slider 4, locking push rod 5, guide slider 6, lifting rod 7, clamping shaft 8, bottom plate 9, top dead center position limit block 10. The pin shaft mounting support 11, the pressure rod 12, and the bottom dead center position limit block 13.

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings and the embodiments. The following embodiments are the explanations of the present utility model and the present utility model is not limited to the following embodiments.

Example.

Referring to Figures 1 to 2, the self-locking multi-link type lifting and clamping mechanism of the upper and lower dead centers of this embodiment mainly includes a spring bracket 2, a spring plunger 3, a small slider 4, a locking push rod 5, and a guide slider 6. Lifting rod 7, clamping shaft 8, upper dead center position limit block 10, pin shaft mounting support 11, pressing rod 12 and bottom dead center position limit block 13.

In this embodiment, the bottom plate 9 is fixed on the frame 1 by bolts, the guide slider 6 is installed on the bottom plate 9 by bolts, and the lifting rod 7 is vertically installed in the guide slider 6 to form a translation motion pair, so that the lifting rod 7 is in the Under the constraint of the guide slider 6, it can only move up and down in a straight line.

In this embodiment, the clamping shaft 8 is fixedly installed on the upper end of the lifting rod 7, the lower end of the lifting rod 7 is connected with the U-shaped slot hole of the pressing rod 12 through the pin shaft, and the left end of the pressing rod 12 is hinged with the pin shaft mounting support 11 through the pin shaft, The pin shaft mounting support 11 is fixed on the base plate 9 by bolts, so that the pressing rod 12 can only rotate around the pin shaft.

In this embodiment, the right end of the pressing rod 12 is hinged with one end of the locking push rod 5 through a pin shaft, and the other end of the locking push rod 5 is hinged with the small slider 4 through the pin shaft. A translation motion pair is formed in the groove, so that the small slider 4 can only perform horizontal linear motion under the constraint of the U-shaped groove.

In this embodiment, the spring bracket 2 is installed on the bottom plate 9 by bolts, and the spring plunger 3 is fixed on the spring bracket 2. The left end of the spring plunger 3 bears against the small slider 4 and keeps a horizontal leftward direction to the small slider 4 at all times. thrust.

In this embodiment, the upper dead center position limit block 10 is fixed on the base plate 9 by bolts, which is used to limit the upper limit position of the counterclockwise rotation of the pressing rod 12; the bottom dead center position limit block 13 is fixed on the base plate 9 by bolts for Limit the lower limit position of the clockwise rotation of the pressing rod 12 .

In this embodiment, the pressing rod 12 is provided with a pin shaft hole for connecting with the pin shaft mounting support 11, a U-shaped slot hole for connecting with the bottom of the lifting rod 7, and a pin shaft hole for connecting with the locking push rod 5 in order from left to right. And the U-shaped slot hole is between the two pin shaft holes.

In this embodiment, the bottom plate 9 is provided with a horizontal U-shaped slot, and it should be ensured that the central axis of the horizontal U-shaped slot is at the same level as the center position of the pin hole of the pin shaft mounting support 11 and the central axis of the spring plunger 3 altitude position.

The working principle of this embodiment is as follows: the pressing rod 12 is used as a joystick, and the left end of the pressing rod 12 is the operating end, and when the left end of the pressing rod 12 is pressed down, the right end of the pressing rod 12 will drive the lifting rod 7 and the clamping shaft 8 vertically upward After the thrust generated by the spring plunger 3 is transmitted through the locking push rod 5, an upward thrust will be generated on the lifting rod 7, which can lock the lifting rod 7 and the clamping shaft 8 at the top dead center position; The left end of the rod 12 and the right end of the pressing rod 12 will drive the lifting rod 7 and the clamping shaft 8 to move vertically downward, and the thrust generated by the spring plunger 3 will be transmitted through the locking push rod 5 and will produce a downward pulling force on the lifting rod 7 , lock the lift rod 7 and the clamping shaft 8 at the bottom dead center position.

In this embodiment, the horizontal thrust generated by the spring plunger 3 can be used to realize the self-locking of the lifting and clamping mechanism at the upper and lower dead centers, and the self-locking force can be adjusted by changing the spring constant and the spring compression length of the plunger spring 3 , The tedious locking device is omitted, the structure is simple, the operation is convenient, the utility model is reliable and durable, the manufacturing cost is low, and the installation and maintenance are easy.

Through the above description, those skilled in the art have been able to implement.

In addition, it should be noted that the specific embodiments described in this specification may have different shapes and names of parts and components, and the above content described in this specification is only an illustration of the structure of the present invention. All equivalent changes or simple changes made according to the structure, features and principles described in the patent concept of the present utility model are included in the protection scope of the present utility model patent. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, as long as they do not deviate from the structure of the present invention or exceed those defined in the claims. All should belong to the protection scope of the present invention.

Claims (9)

1. The utility model provides a multi-link formula lift card axle mechanism of top and bottom dead center position auto-lock, includes frame and bottom plate, the bottom plate is fixed in the frame, its characterized in that: the lifting device is characterized by further comprising a guide sliding block, a lifting rod, a clamping shaft, a pressing rod, a pin shaft mounting support, a locking push rod, a small sliding block, a spring support, a spring plunger, an upper dead point position limiting block and a lower dead point position limiting block, wherein the lifting rod is movably arranged in the guide sliding block, one end of the lifting rod is connected with the clamping shaft, the other end of the lifting rod is connected with the pressing rod, the pressing rod is connected with the pin shaft mounting support, the pin shaft mounting support is mounted on a bottom plate, one end of the locking push rod is connected with the pressing rod, the other end of the locking push rod is connected with the small sliding block, the small sliding block is movably arranged on the bottom plate, the spring support is fixed on the bottom plate, the spring plunger is mounted on the spring support.

2. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the pressing rod is sequentially provided with a pin shaft hole for connecting with the pin shaft mounting support, a U-shaped groove hole for connecting with the bottom of the lifting rod and a pin shaft hole for connecting with the locking push rod from left to right, and the U-shaped groove hole is positioned between the two pin shaft holes.

3. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the bottom plate is provided with a horizontal U-shaped slotted hole, and the central axis of the horizontal U-shaped slotted hole, the circle center position of the pin shaft hole of the pin shaft mounting support and the central axis of the spring plunger are positioned at the same horizontal height position.

4. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the left end of the pressure lever is hinged with the pin shaft mounting support through a pin shaft, the right end of the pressure lever is hinged with one end of the locking push rod through a pin shaft, and the other end of the locking push rod is hinged with the small sliding block through a pin shaft.

5. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 3, which is characterized in that: the small sliding block is arranged in a horizontal U-shaped slot of the bottom plate, and the small sliding block moves horizontally and linearly in the horizontal U-shaped slot.

6. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 2, which is characterized in that: the lower end of the lifting rod is connected with a U-shaped groove hole of the pressure rod through a pin shaft.

7. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the lifting rod is vertically arranged in the guide sliding block to form a translational motion pair with the guide sliding block.

8. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the spring support, the guide sliding block, the pin shaft mounting support, the upper dead point position limiting block and the lower dead point position limiting block are fixed on the bottom plate through bolts.

9. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the bottom plate is fixed on the frame through bolts.

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