CN200942774Y - Self-locking device with spring shaft pin plate plate of four-link gripping device - Google Patents

Abstract

The utility model provides a plate type self-locking device for the spring shaft pin of a four-bar linkage rope clip, which comprises a jawed inner holder and a jawed outer holder that are inter-articulated, a bent lever shaft that is inter-articulated with the inner holder, a sleeve out of the bent lever shaft, and a rope clip, composed of a head wheel seat, an outer holder seat and a skip pole connector, that is provided on the sleeve. The utility model is characterized in that: the bent lever shaft of the rope clip is further provided with a plate frame, a self-locking spring provided in the plate frame, and a self-locking device that is composed of self-locking plates and is articulated on the plate frame. The utility model can fundamentally solve the problem with existing four-bar linkage gravity detachable rope clips that skip falling occurs due to the absence of locking on the maximum chucking power of the wire cable, thus can fully eliminate the safety hazards and accidents during the route running of such cableways, and such cableways can be widely applied. Besides, the utility model has the advantages of: simple structure, easy installation and repair, high feasibility and reliability, and long service life etc.

Description

Self-locking device with spring shaft pin plate plate of four-link gripping device

technical field

The utility model relates to a self-locking device, in particular to a spring shaft-pin plate type self-locking device for a cable grip.

Background technique

The four-bar gravity detachable grip has become the only one adopted in the national freight single-line circulation detachable grip ropeway series products due to its single structure, durability and simple maintenance. The operation practice proves that it is easy to use but not worry-free. The key problem of worry-free operation is that the bucket drop rate remains high during line operation. In addition to management factors, the root cause of this problem is the structure of the rope grip itself. The design is flawed. For example, when this kind of rope gripper runs uphill or downhill on the line, it just needs to have a higher clamping force on the steel rope, that is, the gravity of the bucket makes the rope gripper produce a clamping force on the steel rope However, due to the structural design flaws of this type of gripper, there is no vertical relationship between the movement direction of the bucket and the vertical line of gravity, so that its clamping force on the steel rope will not only not increase, but will decrease instead, and then Causing safety accidents such as skidding and dropping buckets. In addition, when the line is trembling during operation, the clamping function will also be lost due to the inability to lock the clamping force and lose weight, which will cause the steel rope to be unable to be clamped and the bucket to fall. Also just because of these insurmountable technical barriers, make people be difficult to use this grip device with confidence, thus limit the further application and the development of this type ropeway. Therefore, it is necessary to improve the prior art.

Contents of the invention

In view of the above-mentioned defects existing in the prior art, the utility model provides a safe and reliable four-bar cable grip spring shaft pin plate-type self-locking device that can automatically lock the maximum clamping force when the line is running, so as to overcome the disadvantages of the prior art. defects, so that the advantages and performance of this grip can be brought into full play.

The utility model is realized through the following technical proposals: a four-link cable gripping device spring shaft pin plate type self-locking device, which includes inner and outer holding cards with jaws hinged to each other and hinged with the inner holding card The cable grip composed of the bending rod shaft, the sleeve on the bending rod shaft, the head running wheel seat on the sleeve, the outer holding bracket and the boom joint is characterized in that the bending rod shaft of the gripping device is also equipped with There is a self-locking device composed of a plate base, a self-locking spring located in the plate base, and a self-locking plate hinged on the plate base.

The self-locking plate is set on the bending rod shaft through the shaft hole on it, and the running wheel at the upper end of the self-locking plate is matched with the guide plate for releasing the self-locking state, which is used to release the self-locking state of the gripping device, and automatically The lower end of the locking plate is hinged on the plate base through a pivot pin, so that the self-locking plate can swing around the pivot pin to realize self-locking or unlocking.

The self-locking spring is set on the bending rod shaft, one end of which is placed on the plate base, and the other end is placed on the self-locking plate, so that through the combination of the self-locking spring and the self-locking plate, Realize level or stepless self-locking.

The plate base is axially fixed on the sleeve on the bent rod shaft through a lock nut and a lock washer.

The tail end of the plate base can be provided with a tail running wheel, so as to improve the balance stability etc. when the gripping device is unhooked and enters and exits the station.

A friction plate can be arranged on the running wheel seat at the head of the gripping device, so as to improve the synchronization consistency between the gripping device and the steel rope when it is detached and enters and exits the station.

A duckbill-shaped protruding rod can be arranged on the outer holding card of the cable gripping device, so as to pass through the cable pressing roller group of the line tower smoothly.

The surface of the curved rod shaft of the gripping device is set as a convex-concave surface or a smooth surface, so as to realize stepless or stepless self-locking.

Compared with the prior art, the utility model has the following advantages and effects: since a spring shaft pin plate type self-locking device is directly added to the tail of the existing four-bar gravity detachment type grip, it can fundamentally overcome the existing There is a bucket drop problem caused by the four-bar gravity detachable rope grip because it cannot lock the maximum clamping force of the steel rope, so it completely eliminates the safety hazards and accidents of this type of ropeway when it is running on the line. This type of cableway can be widely used. The utility model also has the advantages of simple structure, easy installation and maintenance, high feasibility and reliability, long service life, etc., and has high popularization and application value.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings, but the content of the utility model is not limited thereto.

In the figure: 1 is the outer holding card, on which a duckbill-shaped protruding rod 2 can be arranged, so as to smoothly pass through the line tower frame pressing roller group 3, and 5 is the inner holding card, which is hinged with the outer holding card 1 through the pivot pin 4 , the lower ends of the inner and outer clamps 5 and 1 are provided with jaws 18, through the cooperation of the two, the clamping and loosening of the steel rope 17 is completed, and the steel rope 17 in line operation can be carried on the line tower Frame support cable roller group 19 or can be pressed under the line tower frame pressure roller group 3; 6 is a bent rod shaft, which is hinged with the inner holding card 5 through a shaft pin 7, and a sleeve is arranged on the curved rod shaft 6 9. The sleeve 9 is provided with a head running wheel seat 21, the head running wheel seat 21 is provided with a head running wheel 20, the sleeve 9 is provided with a boom joint 22, an optional bushing 24 and its upper The outer holding card seat 10 is hinged with the outer holding card 1 through the pivot pin 23 to complete the corresponding action requirements of the four-bar linkage mechanism. Synchronization consistency with the steel rope when entering and leaving the station; the plate base 15 is axially fixed on the sleeve 9 through the lock nut 27, the lock washer 26 and the washer 25, and the self-locking plate 13 passes through the shaft on it. The hole 29 is set on the bending rod shaft 6, its upper end is matched with the guide plate 11 releasing the self-locking state through the running wheel 12, the lower end is hinged on the plate frame 15 through the shaft pin 28, and the self-locking spring 14 is set on the bending rod On the shaft 6, one end of it is placed on the plate base 15, and the other end is placed on the self-locking plate 13 to complete the self-locking or unlocking task of the bending rod shaft 6. The tail end of the plate base 15 can be set Tail running wheel 16 so as to improve the balance stability etc. when the gripping device is unhooked into and out of the station.

Its working process is as follows: when the gripping device goes out of the station and is tied to the steel rope, the inner and outer grips 5 and 1 are naturally lifted up and clamped under the action of gravity generated between the bucket and the steel rope. The steel rope 17 in 18, meanwhile, the bending rod shaft 6 also constantly moves to the right, and the self-locking plate 13 swings to the left around the shaft pin 28 under the action of the self-locking spring 14, because the self-locking plate 13 and the bending rod shaft The mutual movement of 6 has an interference effect on the pointing, so that the bending rod shaft 6 can only move to the right and cannot move to the left, so the leftward movement of the bending rod shaft 6 is locked, and then the jaw 18 and the steel rope 17 are also locked. The increasing clamping force creates a lock. When the gripping device enters the station and the steel rope is disengaged, the self-locking plate 13 contacts and moves through the running wheel 12 at its upper end and the guide plate 11 that releases the self-locking state, so that the self-locking plate 13 is now around the shaft pin 28 Swing to the right to break away from the interference, thereby releasing the locked state to the bending rod shaft 6, thus, also releasing the clamping force locking between the jaws 18 and the steel rope 17 naturally.

Claims (8)

1. A self-locking device of a four-bar-link gripping device with a spring shaft pin plate type, which includes inner and outer grips with jaws hinged to each other, a bent rod shaft hinged with the inner grip, and a bent rod shaft The sleeve on the upper sleeve, and the head running wheel seat on the sleeve, the outer holding bracket and the boom joint constitute the gripping device, which is characterized in that the bending rod shaft of the gripping device is also equipped with a plate base, And the self-locking spring that is positioned at the plate support, and the self-locking device that the self-locking plate that is hinged on the plate support constitutes. 2. The self-locking device according to claim 1, characterized in that the self-locking plate is fitted on the shaft of the bent rod through the shaft hole on the self-locking plate, and the self-locking plate The running wheel at the upper end of the sheet is matched with the guide plate that releases the self-locking state, and the lower end of the self-locking sheet is hinged on the sheet support through a pivot pin. 3. The spring shaft pin plate type self-locking device of the four-link gripping device according to claim 1, characterized in that the self-locking spring is set on the bending rod shaft, one end of which is placed on the plate base, The other end is placed on the self-locking plate. 4. The spring shaft pin plate type self-locking device of the four-link gripping device according to claim 1, characterized in that the plate base is axially fixed on the bending rod shaft by a lock nut and a lock washer on the sleeve. 5. The plate-type self-locking device with spring pivot pins of four-link gripping device according to claim 1, characterized in that the tail end of the plate base is provided with a tail running wheel. 6. The self-locking device according to claim 1, characterized in that a friction plate is set on the running wheel seat at the head of the cable grip. 7. The self-locking device of the four-link cable grip with spring pivot pin plate plate type according to claim 1, characterized in that a duckbill-shaped protruding rod can be arranged on the outer grip of the grip cable. 8. The self-locking device of the four-bar cable grip spring shaft pin plate type self-locking device according to claim 1, characterized in that the surface of the curved rod shaft of the grip grip is set as a convex-concave surface or a smooth surface.

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