CN219452793U - Chain tensioning protection device - Google Patents
Chain tensioning protection device Download PDFInfo
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- CN219452793U CN219452793U CN202320377752.4U CN202320377752U CN219452793U CN 219452793 U CN219452793 U CN 219452793U CN 202320377752 U CN202320377752 U CN 202320377752U CN 219452793 U CN219452793 U CN 219452793U
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- box body
- friction block
- chain
- piece
- proximity sensor
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Abstract
The utility model relates to the technical field of cable hoisting equipment, in particular to a chain tensioning protection device, which comprises a support piece, a box body, a connecting piece, a proximity sensor and a detection piece, wherein the support piece is arranged on the box body; the box body is connected with the supporting piece, one end of the connecting piece is positioned in the box body and is connected with the inner wall of the box body through a spring, and the other end of the connecting piece is connected with the friction block; the outer surface of the friction block is arc-shaped and is used for propping up the chain under the action of the spring; the proximity sensor is arranged on the first box body; one end of the detection piece is connected with the friction block, and the other end of the detection piece is provided with a metal target object matched with the proximity sensor. Through this chain tensioning protection device, can effectively solve the problem that can't carry out the rate of tension adjustment and detect to the chain.
Description
Technical Field
The utility model relates to the technical field of cable hoisting equipment, in particular to a chain tensioning protection device.
Background
Since the cable crane hoist is faster than conventional hoist, the former is running and requires that the wire rope must be aligned on the drum. The conventional mode of controlling the deflection angle of the steel wire rope on the winding drum cannot meet the requirement of high-speed lifting of the cable crane.
In the prior art, a Chinese patent document with a publication number of CN2727133 and an authorized bulletin date of 09/21/2005 is proposed, and the technical scheme disclosed in the patent document is as follows: a chain-type rope arranging device for lifting rope of cable crane features that a supporting cross beam with guide rail is installed under main tower, the rollers matched with guide rail are supported by pulley axle, the reverse wheels fixed to pulley frame are arranged on cross beam, and the pulley frame is pulled by two three rows of chains after the single row of chains sleeved on the chain wheel of drum axle drives speed reducer to reduce speed.
In the practical use process, the following problems can occur: the chain between the spool axle and the output speed reducer can not adjust the rate of tension, also can't detect the rate of tension, influences hoisting mechanism's steady work easily, causes the potential safety hazard.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a chain tensioning protection device which can effectively solve the problem that the tensioning degree of a chain cannot be adjusted and detected.
The utility model is realized by adopting the following technical scheme:
a chain tensioning protection device, characterized in that: comprises a supporting piece, a box body, a connecting piece, a proximity sensor and a detecting piece; the box body is connected with the supporting piece; one end of the connecting piece is positioned in the box body and connected with the inner wall of the box body through a spring, and the other end of the connecting piece is connected with a friction block; the outer surface of the friction block is arc-shaped and is used for propping up the chain under the action of the spring; the proximity sensor is arranged on the first box body; one end of the detection piece is connected with the friction block, and the other end of the detection piece is provided with a metal target object matched with the proximity sensor.
The friction block is made of MC nylon.
The end of the connecting piece is provided with a T-shaped groove for placing the friction block, and the friction block is provided with a T-shaped protruding block matched with the T-shaped groove.
The central axis of the tensioning protection device is perpendicular to the chain.
A bottom plate made of angle steel is further arranged between the supporting piece and the box body, and the box body is connected with one side face of the bottom plate through bolts.
And the box body is also provided with a limiting part, and the connecting part is provided with a sliding rail matched with the limiting part.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the utility model, in an initial state, the friction block is tightly propped against the chain, the spring is in a compressed state, and a metal target on the detection piece is in a detection range of the proximity sensor; when the friction block is worn to a certain extent, the spring is gradually loosened to enable the metal target object on the detection piece to be separated from the detection range of the proximity sensor, so that tension detection in the running process of the chain is realized, and the safe running of the chain is protected. The utility model can also be connected with an additional alarm system to realize the function of alarming in time; and the proximity sensor can judge the abrasion condition of the friction block by detecting the position of the metal target in real time, so that early warning can be conveniently sent out.
The outer surface of the friction block is arc-shaped, so that the friction block is matched with the deformed chain in shape, and the running effect of the chain is prevented from being influenced. And the tension of the chain is judged by measuring the abrasion condition of the friction block innovatively, and compared with the technical scheme of detecting the pressure of the spring through a pressure sensor and the like which are conventional in the art, the detection result is more accurate.
The spring is arranged in the box body, is particularly suitable for a scene of high-speed movement between the chain and the friction block, and can prevent the tension protection device from being dragged by the chain to be taken away.
2. The friction block is made of MC nylon and soft, and when the chain and the friction block perform high-speed relative motion, the friction block cannot damage the chain on the premise of playing a tensioning role, so that the service life of the chain is prolonged.
3. The T-shaped groove and the T-shaped protruding block are arranged, so that the friction block is stably installed, and the friction block can be replaced.
4. The central axis of the protection device is perpendicular to the chain, so that the contact lengths of the two ends of the friction block and the chain are symmetrical after the friction block is contacted with the chain.
5. The arrangement of the bottom plate made of angle steel can change the installation direction of the on-site installation bolts, for example, the bolts arranged in the vertical direction during installation can be changed into the horizontal direction for installation, and on-site installation is facilitated.
6. The arrangement of the limiting piece and the sliding rail provides a track and a limiting effect for the relative movement between the box body and the connecting piece, and is also convenient for improving the connection stability between the box body and the connecting piece.
Drawings
The utility model will be described in further detail with reference to the drawings and detailed description, wherein:
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic elevational view of the present utility model;
FIG. 3 is a schematic view of the installation of the present utility model;
the marks in the figure:
1. the tensioning protection device comprises a tensioning protection device 2, a box body 3, a connecting piece 4, a proximity sensor 5, a detecting piece 6, a spring 7, a friction block 8, a T-shaped groove 9, a T-shaped lug 10, a bottom plate 11, a limiting piece 12, a sliding rail 13, a winding drum device 14, a steel wire rope arranging guide device 15, a chain 16 and a supporting piece.
Detailed Description
Example 1
As a basic embodiment of the present utility model, the present utility model includes a chain tension protecting device including a support member 16, a case 2, a connecting member 3, a proximity sensor 4, and a detecting member 5. The box body 2 is connected with a supporting piece 16, the supporting piece 16 is used for providing supporting force for the whole tensioning protection device 1, and the installation angle of the whole tensioning protection device 1 can be adjusted by adjusting the angle of the supporting piece 16.
The connecting piece 3 can be in a column shape, one end of the connecting piece is positioned in the box body 2 and is connected with the inner wall of the box body 2 through the spring 6, and the other end of the connecting piece is connected with the friction block 7. The friction block 7 and the connecting piece 3 can be movably connected. The outer surface of the friction block 7, namely the end far away from the connecting piece 3, is arc-shaped and is used for propping up the chain 15 under the action of the spring 6. In the initial state, the friction block 7 is tightly propped against the chain 15, the spring 6 is in a compressed state, and when the friction block 7 is worn to a certain degree, the spring 6 is gradually loosened until the friction block 7 is severely worn and cannot be tightly propped against the chain 15.
In order to protect the running state of the chain 15 such that the friction block 7 can always exert a tightening effect on the chain 15, the wear degree of the friction block 7 can be detected by means of the proximity sensor 4 and the detecting element 5. Specifically, the proximity sensor 4 is provided on the first casing 2. One end of the detecting piece 5 is connected with the friction block 7, and the other end of the detecting piece is provided with a metal target matched with the proximity sensor 4. When the friction block 7 is tightly propped against the chain 15, the metal target object is always positioned in the detection range of the proximity sensor 4, when the friction block 7 is worn, the spring 6 stretches to drive the friction block 7 to move towards the chain 15 and further drive the detection piece 5 to move towards the chain 15 until the friction block 7 is worn to a certain extent, so that the metal target object on the detection piece 5 is separated from the detection range of the proximity sensor 4.
Example 2
As a preferred embodiment of the present utility model, the present utility model includes a chain tension protector, which includes a support member 16, a case 2, a connecting member 3, a proximity sensor 4, and a detecting member 5. One end of the connecting piece 3 is positioned in the box body 2 and is connected with the inner wall of the box body 2 through a spring 6, and the other end of the connecting piece is connected with a friction block 7. The outer surface of the friction block 7 is arc-shaped and made of MC nylon and is used for propping up the chain 15 under the action of the spring 6 until the friction block is excessively worn and cannot prop up the chain 15. The proximity sensor 4 is provided on the first casing 2. One end of the detecting piece 5 is connected with the friction block 7, and the other end of the detecting piece is provided with a metal target matched with the proximity sensor 4.
The supporting member 16 may be a bracket, and is configured to be connected to the box 2, to provide a supporting force for the whole tensioning protection device 1, so that the central axis of the protection device is perpendicular to the chain 15, and finally, after the friction block 7 contacts with the chain 15, the lengths of the two ends contacted are symmetrical.
Example 3
As another preferred embodiment of the present utility model, the present utility model includes a chain tension protector comprising a support member 16, a case 2, a connecting member 3, a proximity sensor 4, and a detecting member 5. The box body 2 is connected with the supporting piece 16, specifically, a bottom plate 10 made of angle steel is further arranged between the supporting piece 16 and the box body 2, and the box body 2 is connected with one side surface of the bottom plate 10 through bolts, so that the installation angle of the tensioning protection device 1 can be adjusted conveniently.
One end of the connecting piece 3 is positioned in the box body 2 and is connected with the inner wall of the box body 2 through a spring 6, and the other end of the connecting piece is connected with a friction block 7. Specifically, a T-shaped groove 8 for placing a friction block 7 is formed at the end of the connecting piece 3, and a T-shaped bump 9 matched with the T-shaped groove 8 is arranged on the friction block 7. The outer surface of the friction block 7 is arc-shaped and is used for propping up the chain 15 under the action of the spring 6. The proximity sensor 4 is arranged on the first box body 2; one end of the detecting piece 5 is connected with the friction block 7, and the other end of the detecting piece is provided with a metal target matched with the proximity sensor 4.
Example 4
As a preferred embodiment of the utility model, the utility model comprises a chain tensioner 1, which is particularly suitable for use in a chain 15 arranged between a winding drum device 13 and a wire rope guide 14, with reference to fig. 3 of the drawings. Referring to fig. 1 of the specification and fig. 2 of the specification, the chain tension protecting device 1 of the present utility model includes a supporting member 16, a bottom plate 10, a case 2, a connecting member 3, a spring 6, a pressing plate, a friction block 7, a proximity sensor 4, a detecting member 5, and an alarm assembly.
The support 16 may be fixed to the ground for good support. The bottom plate 10 is made of angle steel and comprises two side surfaces which are vertically arranged, wherein one side surface is used for being connected with the supporting piece 16, the other side surface is used for being connected with the box body 2 through a plurality of bolts, and the bolts which are arranged in the vertical direction are changed into the bolts which are horizontally arranged during installation, so that the central axis of the tensioning protection device 1 is vertical to the chain 15.
Further, a pressing plate connected with the bolt is further arranged in the box body 2. The spring 6 is arranged in the box body 2, one end of the spring is connected with the pressing plate, and the other end of the spring is connected with the connecting piece 3. The size circumference of the connecting piece 3 is 3mm smaller than the outer contour of the box body 2. The spring 6 compresses or extends to drive the connecting piece 3 to move up and down along the central axis of the box body 2. In order to improve the connection stability of the connecting piece 3 and the box body 2, the box body 2 is further provided with a limiting piece 11, the limiting piece 11 can be a sliding block, and the connecting piece 3 is provided with a sliding rail 12 matched with the limiting piece 11. Or, a bolt is arranged on the box body 2, and a long hole matched with the bolt is arranged on the connecting piece 3.
The end of the other end of the connecting piece 3 is provided with a T-shaped groove 8 for placing a friction block 7, and the friction block 7 is provided with a T-shaped protruding block 9 matched with the T-shaped groove 8. The friction block 7 is made of MC nylon, and the outer surface of the friction block 7, namely, one end far away from the connecting piece 3, is arc-shaped.
The proximity sensor 4 is provided on the first case 2, and the fixing manner is not limited. The detecting member 5 may have a rod shape, one end of which is connected to the friction block 7, and the other end of which is provided with a metal target, such as a steel sheet, which is matched with the proximity sensor 4. The alarm assembly may include an alarm and a controller. In this embodiment, the proximity sensor 4, the controller and the alarm are all purchased from a finished product, and the structure of the proximity sensor is not required to be improved. The controller is connected to the proximity sensor 4 and the alarm, respectively, and this connection is not modified in this embodiment either.
When the tensioning protection device 1 is installed, the friction block 7 is tightly propped against the chain 15, the spring 6 is in a compressed state, and a metal target object on the detection piece 5 is positioned in the detection range of the proximity sensor 4; when the friction block 7 is worn to a certain extent, the spring 6 is gradually loosened to enable the metal target object to be separated from the detection range of the proximity sensor 4, and an alarm feedback signal is sent.
In view of the foregoing, it will be appreciated by those skilled in the art that, after reading the present specification, various other modifications can be made in accordance with the technical scheme and concepts of the present utility model without the need for creative mental efforts, and the modifications are within the scope of the present utility model.
Claims (6)
1. A chain tensioning protection device, characterized in that: comprises a supporting piece (16), a box body (2), a connecting piece (3), a proximity sensor (4) and a detecting piece (5); the box body (2) is connected with the supporting piece (16); one end of the connecting piece (3) is positioned in the box body (2), is connected with the inner wall of the box body (2) through a spring (6), and the other end of the connecting piece is connected with a friction block (7); the outer surface of the friction block (7) is arc-shaped and is used for propping up the chain (15) under the action of the spring (6); the proximity sensor (4) is arranged on the first box body (2); one end of the detection piece (5) is connected with the friction block (7), and the other end of the detection piece is provided with a metal target matched with the proximity sensor (4).
2. A chain tensioner as set forth in claim 1, wherein: the friction block (7) is made of MC nylon.
3. A chain tensioner as set forth in claim 2, wherein: the end part of the connecting piece (3) is provided with a T-shaped groove (8) for placing a friction block (7), and the friction block (7) is provided with a T-shaped protruding block (9) matched with the T-shaped groove (8).
4. A chain tensioner as claimed in claim 2 or 3, wherein: the central axis of the tensioning protection device (1) is perpendicular to the chain (15).
5. A chain tensioner as set forth in claim 4, wherein: a bottom plate (10) made of angle steel is further arranged between the supporting piece (16) and the box body (2), and the box body (2) is connected with one side surface of the bottom plate (10) through bolts.
6. A chain tensioner as set forth in claim 1, wherein: the box body (2) is also provided with a limiting part (11), and the connecting part (3) is provided with a sliding rail (12) matched with the limiting part (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320377752.4U CN219452793U (en) | 2023-03-03 | 2023-03-03 | Chain tensioning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320377752.4U CN219452793U (en) | 2023-03-03 | 2023-03-03 | Chain tensioning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452793U true CN219452793U (en) | 2023-08-01 |
Family
ID=87423268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320377752.4U Active CN219452793U (en) | 2023-03-03 | 2023-03-03 | Chain tensioning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452793U (en) |
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2023
- 2023-03-03 CN CN202320377752.4U patent/CN219452793U/en active Active
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