Brake clutch device for loop chain tightener

Abstract

According to the brake clutch device for the loop chain tightener, by limiting the rotating direction of the clutch assembly, the clutch assembly can limit the rotating direction of the loop chain driving piece when connected with the loop chain driving piece, so that the loop chain driving piece can only increase the height of a load on a loop chain in the rotating direction; and when the loop chain driving piece is separated from the clutch assembly, rotation limitation of the loop chain driving piece is relieved, rotation of the loop chain driving piece is not limited, and at the moment, the loop chain can be subjected to position adjustment to be matched with lifting of objects with different heights.

Description

Technical Field

[0001] The present application relates to the field of brake technology, and in particular to a brake clutch device for a chain tensioner. Background Art

[0002] The wire tensioner, also known as the ratchet tensioner, is used to tighten the wire during the construction of overhead line installation. When using it, first loosen the wire rope or galvanized iron wire on the wire tensioner and fix it on the crossarm, clamp the wire with the wire clamp, and then turn the special wrench. Due to the anti-reversal effect of the ratchet, gradually wind the wire rope or galvanized iron wire around the ratchet drum to tighten the wire. Fix the tightened wire on the insulator. Then loosen the ratchet first to loosen the wire rope or galvanized iron wire, then loosen the wire clamp, and finally wind the wire rope or galvanized iron wire around the ratchet drum.

[0003] In the current use of the tensioner, the chain is loosened and fixed by loosening and tightening the pawl. When the ratchet wheel that cooperates with the pawl is always under stress, it is relatively difficult for the pawl to disengage from the ratchet wheel, which directly causes the chain to be unable to be adjusted. Utility Model Content

[0004] Based on this, it is necessary to provide a braking clutch device for a chain tensioner in which the chain is loosened and fixed by loosening and tightening the pawl during use. When the ratchet wheel cooperating with the pawl is always under stress, it is relatively difficult for the pawl to disengage from the ratchet wheel, which will directly lead to the problem that the chain cannot be adjusted.

[0005] The present application provides a brake clutch device for a chain tensioner, comprising:

[0006] The main body of the tensioner;

[0007] A chain drive member, rotatably disposed on the tensioner body;

[0008] Characterized in that the braking clutch device for the chain tensioner comprises:

[0009] A clutch assembly is arranged on the tensioner body, the clutch assembly is rotationally matched with the chain drive, the clutch assembly is arranged to rotate in one direction, when the clutch assembly is tightened on the chain drive, the rotation direction of the chain drive is restricted, and when the clutch assembly is detached from the chain drive, the rotation of the chain drive is not restricted.

[0010] The present application relates to a brake clutch device for a chain tensioner, which limits the rotation direction of a clutch assembly, so that the clutch assembly can limit the rotation direction of the chain drive when it is connected to the chain drive, so that the chain drive can only rotate in a direction that can increase the height of the load on the chain, and further maintain a high stability when there is a load on the chain. When the chain drive is disengaged from the clutch assembly, the rotation restriction of the chain drive is released, and the rotation of the chain drive is not restricted. At this time, the chain can be adjusted to cooperate with the lifting of objects at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of a chain tensioner equipped with a braking clutch device for the chain tensioner provided in one embodiment of the present application.

[0012] Figure 2 A schematic half-section diagram of a chain tensioner equipped with a brake clutch device for the chain tensioner provided in one embodiment of the present application, cut along section line AA.

[0013] Figure 3 A partial structural schematic diagram of a chain tensioner equipped with a braking clutch device for the chain tensioner provided in one embodiment of the present application (used to show the installation position of the adapter teeth).

[0014] Figure 4 A partial structural schematic diagram of a chain tensioner provided with a brake clutch device for the chain tensioner according to an embodiment of the present application (used to show the position of the positioning protrusion on the adjustment disk).

[0015] Figure 5 for Figure 2 Enlarged view of point g in the middle.

[0016] Reference numerals:

[0017] 11. Wire tensioner body; 111. Limiting groove; 12. Chain drive member; 13. Clutch assembly;

[0018] 131. clutch rod; 132. transfer tooth; 133. adjustment plate; 133a. positioning protrusion; 134. spring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] like Figure 1As shown, in one embodiment of the present application, the brake clutch device for a chain tensioner includes a tensioner body 11 , a chain drive 12 and a clutch assembly 13 .

[0021] The chain drive member 12 is rotatably disposed on the tensioner body 11 .

[0022] The clutch assembly 13 is arranged on the tensioner body 11. The clutch assembly 13 is rotationally matched with the chain drive member 12. The clutch assembly 13 is arranged to rotate in one direction. When the clutch assembly 13 is screwed onto the chain drive member 12, the rotation direction of the chain drive member 12 is restricted. When the clutch assembly 13 is separated from the chain drive member 12, the rotation of the chain drive member 12 is not restricted.

[0023] Specifically, a chain drive 12 is rotatably provided on the tensioner body 11, and the chain drive 12 is used to limit the position of the chain on the chain tensioner and drive the chain to move. The clutch assembly 13 is provided on the tensioner body 11, and the clutch assembly 13 passes through the chain drive 12, and the clutch assembly 13 can be rotatably engaged and disengaged relative to the chain drive 12.

[0024] In this embodiment, by limiting the rotation direction of the clutch assembly 13, the clutch assembly 13 can limit the rotation direction of the chain drive member 12 when it is connected to the chain drive member 12, so that the chain drive member 12 can only rotate in a direction that can increase the height of the load on the chain, and further enable the chain to maintain a high stability when there is a load on it. When the chain drive member 12 is disengaged from the clutch assembly 13, the rotation restriction of the chain drive member 12 is released, and the rotation of the chain drive member 12 is not restricted. At this time, the chain can be adjusted to cooperate with the lifting of objects at different heights and to tighten the chain.

[0025] like Figures 2 to 3 As shown, in one embodiment of the present application, the clutch assembly 13 includes a clutch rod 131 , a transfer tooth 132 , an adjustment disk 133 and a spring 134 .

[0026] The clutch rod 131 is arranged on the tensioner body 11. A through hole is arranged on the chain drive member 12. The clutch rod 131 passes through the chain drive member 12 through the through hole. The clutch rod 131 is arranged to be slidable in the through hole.

[0027] The transfer tooth 132 is fixedly connected to one end of the clutch rod 131 . The transfer tooth 132 is rotationally matched with the chain drive member 12 .

[0028] The adjusting disk 133 is fixedly disposed on the other end of the clutch rod 131 .

[0029] The spring 134 is sleeved on the clutch rod 131. The spring 134 is arranged on a side close to the transfer tooth 132. One end of the spring 134 abuts against the clutch rod 131. The other end of the spring 134 abuts against the chain drive member 12.

[0030] Specifically, the clutch rod 131 is arranged on the tensioner body 11, the clutch rod 131 slides through the chain drive 12, the clutch rod 131 can rotate and slide relative to the tensioner body 11, the transfer tooth 132 is fixedly arranged at one end of the clutch rod 131, and the transfer tooth 132 cooperates with the gear of the chain drive 12, the adjustment disk 133 is fixedly arranged at the other end of the clutch rod 131, the spring 134 is sleeved on the clutch rod 131, and one end of the spring 134 abuts against the chain drive 12, and the other end of the spring 134 abuts against the clutch rod 131.

[0031] In this embodiment, by pulling the adjustment disk 133, the clutch rod 131 slides relative to the chain drive member 12, and the transfer tooth 132 is further disengaged from the chain drive member 12, so as to release the restriction on the rotation of the chain drive member 12, and the spring 134 can help the transfer tooth 132 to reset, so that the transfer tooth 132 and the chain drive member 12 are meshed again.

[0032] like Figure 2 and Figure 5 As shown, in one embodiment of the present application, a limiting groove 111 is provided on the tensioner body 11. The limiting groove 111 is arranged on a side close to the adjustment disk 133. A positioning protrusion 133a is fixed on the adjustment disk 133. The positioning protrusion 133a is engaged with the limiting groove 111.

[0033] In this embodiment, the positioning protrusion 133a is driven to be inserted into the limiting groove 111 on the tensioner body 11 by pulling the adjusting disk 133, and the positioning protrusion 133a is engaged with the limiting groove 111 to fix the position of the positioning protrusion 133a, thereby fixing the position of the adjusting disk 133 and the clutch rod 131 to ensure that the transfer tooth 132 and the chain drive member 12 are always kept disengaged. When the adjusting disk 133 is rotated to unlock the positioning protrusion 133a from the limiting groove 111, the elastic force of the spring 134 will again make the transfer tooth 132 engage with the chain drive member 12. At this time, the positioning protrusion 133a will also press against the tensioner body 11 to limit the further movement of the clutch rod 131.

[0034] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A brake clutch device for a chain tensioner, characterized in that: Applicable to a chain tensioner, the chain tensioner comprising: The main body of the tensioner; A chain drive member, rotatably disposed on the tensioner body; Characterized in that the braking clutch device for the chain tensioner comprises: A clutch assembly is arranged on the tensioner body, the clutch assembly is rotationally matched with the chain drive, the clutch assembly is arranged to rotate in one direction, when the clutch assembly is tightened on the chain drive, the rotation direction of the chain drive is restricted, and when the clutch assembly is detached from the chain drive, the rotation of the chain drive is not restricted.

2. The chain according to claim 1 The brake clutch device of the tensioner is characterized in that: The clutch assembly comprises: A clutch rod is arranged on the tensioner body, a through hole is arranged on the chain drive member, the clutch rod passes through the chain drive member through the through hole, and the clutch rod is arranged to be slidable in the through hole; A transfer tooth, fixedly connected to one end of the clutch rod, the transfer tooth being rotationally matched with the chain drive member; An adjusting disk, fixedly arranged at the other end of the clutch rod; A spring is sleeved on the clutch rod. The spring is arranged on a side close to the transfer tooth. One end of the spring abuts against the clutch rod, and the other end of the spring abuts against the ring chain driving member.

3. The chain according to claim 2 The brake clutch device of the tensioner is characterized in that: A limiting groove is provided on the main body of the tensioner, and the limiting groove is arranged on a side close to the adjusting disk. A positioning protrusion is fixed on the adjusting disk, and the positioning protrusion abuts against the main body of the tensioner, and the positioning protrusion is engaged with the limiting groove.

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