Mechanical tension adjusting device

Abstract

The utility model discloses a mechanical tension adjusting device which comprises a sleeve, a sliding shaft capable of sliding back and forth is arranged in the sleeve, an adjusting rod is arranged in the sliding shaft in a penetrating mode, the adjusting rod and the sliding shaft are in sliding fit, the rear end of the sliding shaft is matched with the rear end of the adjusting rod in an abutting mode, and the adjusting rod penetrates through the front end of the sleeve. The adjusting rod is rotatably matched with the front end of the sleeve, the adjusting rod is sleeved with a spring, and the spring is connected between the front end of the sleeve and the sliding shaft in an abutting mode. The device has the characteristics of simple structure, easiness in operation, cost saving and the like.

Description

Technical Field

[0001] The utility model relates to a tension testing device, in particular to a mechanical tension adjusting device. Background Art

[0002] Before the existing automation equipment is put into operation, it is usually necessary to adjust the tension of transmission components such as ropes and belts. For example, in the process of assembling the synchronous belt, the rated tension is applied to the synchronous belt by the outside world to tighten the belt, and the rotating axis of the synchronous belt pulley is fixed under the condition of keeping the tension unchanged. There are two existing tension detection methods: one is to assemble the tensioning mechanism and then use the tension gauge to check whether the assembly is qualified. It is necessary to configure the tension gauge calibration equipment separately, and the application cost is high; the other is to use a precision tensile gauge. This type of tensile machine requires the cooperation of multiple people, which requires more time and labor costs, and it is not easy to stabilize the tension at the specified value. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mechanical tension adjustment device which has a simple structure, is easy to operate and saves costs in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] A mechanical tension adjustment device includes a sleeve, a sliding shaft that can slide back and forth is provided in the sleeve, an adjusting rod is passed through the sliding shaft and the two are slidably matched, the rear end of the sliding shaft abuts and matches with the rear end of the adjusting rod, the adjusting rod passes through the front end of the sleeve, and the adjusting rod and the front end of the sleeve are rotatably matched, a spring is sleeved on the adjusting rod, and the spring abuts between the front end of the sleeve and the sliding shaft.

[0006] Preferably, a rod cap is provided at the rear end of the adjusting rod.

[0007] Preferably, a wrench hole is provided at the rear end of the rod cap.

[0008] Preferably, a front cavity and a rear cavity are provided in the sliding shaft, the front cavity and the rear cavity are separated by an abutment portion, the adjustment rod passes through the abutment portion and the two are slidably matched.

[0009] Preferably, the rear end of the spring is accommodated in the front cavity, and the rod cap is accommodated in the rear cavity.

[0010] Preferably, the front end of the sleeve is provided with an end head, the end head is provided with a through hole, the adjustment rod passes through the through hole and the two are rotatably matched.

[0011] Preferably, the sliding shaft is provided with a score line, the sleeve is provided with a slot hole, the slot hole extends along the length direction of the sleeve, and the score line is aligned with the slot hole.

[0012] Preferably, the sleeve is provided with a plurality of scale marks, the plurality of scale marks are arranged adjacent to the slot hole, and the plurality of scale marks are distributed in sequence along the length direction of the slot hole.

[0013] Preferably, the score line is an annular score line surrounding the sliding shaft.

[0014] In the mechanical tension adjustment device disclosed by the utility model, taking the motor belt transmission mechanism as an example, the motor fixing plate is used to install the motor, the motor fixing plate is provided with a waist-shaped hole, the bottom plate is connected to the waist-shaped hole position on the motor fixing plate by screws, a support block is fixed on the bottom plate, the front end of the sleeve abuts against the support block, the end of the adjusting rod is aligned with the motor fixing plate and threadedly matched, at this time, the initial position of the motor fixing plate can be observed through the engraved lines and other marks on the sliding shaft, and then the adjusting rod is screwed to make it feed relative to the motor fixing plate, in this process, the spring is compressed, and the elastic force applied by the spring is converted into a pulling force on the motor fixing plate until the belt of the motor is tensioned, and the front and rear position changes of the engraved lines and other marks on the sliding shaft are observed to obtain the tension of the motor fixing plate, and when the tensioning degree reaches the requirement, the screws in the waist-shaped hole of the motor fixing plate are tightened. This testing and adjustment method is not only simple in structure, but also easy to operate, and there is no need to purchase independent testing equipment separately, and the tension adjustment can be completed only by relying on the mechanical structure, which effectively saves the application cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the mechanical tension adjustment device of the utility model;

[0016] Figure 2 This is an exploded view of the mechanical tension adjustment device of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the mechanical tension adjustment device of the utility model when applied to motor equipment. DETAILED DESCRIPTION

[0018] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0019] The utility model discloses a mechanical tension adjustment device, combined with Figures 1 to 3As shown, it includes a sleeve 1, a sliding shaft 2 that can slide back and forth is provided in the sleeve 1, an adjusting rod 3 is passed through the sliding shaft 2 and the two are slidably matched, the rear end of the sliding shaft 2 abuts against the rear end of the adjusting rod 3, the adjusting rod 3 passes through the front end of the sleeve 1, and the adjusting rod 3 rotates with the front end of the sleeve 1, a screw portion 31 is provided at the front end of the adjusting rod 3, a spring 4 is sleeved on the adjusting rod 3, and the spring 4 abuts between the front end of the sleeve 1 and the sliding shaft 2.

[0020] In the above structure, take the motor belt drive mechanism as an example, see Figure 2 and Figure 3 The motor fixing plate 101 is used to install the motor. The motor fixing plate 101 has a waist-shaped hole. The bottom plate 100 is connected to the waist-shaped hole position on the motor fixing plate 101 by screws. A support block 102 is fixed on the bottom plate 100. The front end of the sleeve 1 abuts against the support block 102. The end of the adjusting rod 3 is aligned with the motor fixing plate 101 and threadedly matched. At this time, the initial position of the motor fixing plate 101 can be observed through the engraved lines and other marks on the sliding shaft 2. Then, the adjusting rod 3 is screwed to feed it relative to the motor fixing plate 101. During this process, the spring 4 is compressed, and the elastic force applied by the spring 4 is converted into a pulling force on the motor fixing plate 101 until the motor belt is tensioned. The front and rear position changes of the engraved lines and other marks on the sliding shaft 2 are observed to obtain the tension of the motor fixing plate 101. When the tensioning degree reaches the requirement, the screws in the waist-shaped holes of the motor fixing plate 101 are tightened. This testing and adjustment method is not only simple in structure and easy to operate, but also does not require the purchase of independent testing equipment. The tension adjustment can be completed by relying solely on the mechanical structure, which effectively saves the application cost.

[0021] In order to facilitate the screwing of the adjusting rod 3 , in this embodiment, a rod cap 30 is provided at the rear end of the adjusting rod 3 .

[0022] Furthermore, a spanner hole is provided at the rear end of the rod cap 30. For example, the spanner hole may be a hexagon socket hole.

[0023] As a preferred embodiment, a front cavity 20 and a rear cavity 21 are provided in the sliding shaft 2. The front cavity 20 and the rear cavity 21 are separated by an abutment portion 22. The adjusting rod 3 passes through the abutment portion 22 and the two are slidably matched.

[0024] Specifically, the rear end of the spring 4 is accommodated in the front cavity 20 , and the rod cap 30 is accommodated in the rear cavity 21 .

[0025] In the above structure, the rod cap 30 can be placed in the rear cavity 21 and can rotate relative to the rear cavity 21, so as to hide the rear end of the adjustment rod 3 and make the overall structure of the tension adjustment device more compact and small.

[0026] In this embodiment, the front end of the sleeve 1 is provided with an end head 10, and the end head 10 is provided with a through hole 11, and the adjusting rod 3 passes through the through hole 11 and the two are rotatably matched. In actual application, the front end of the adjusting rod 3 is provided with a screw portion 31, and the screw portion 31 is arranged on the front side of the end head 10, and the diameter of the screw portion 31 is larger than the diameter of the threaded portion of the adjusting rod 3. Figure 3 The screw portion 31 is threadedly matched with the motor fixing plate 101 .

[0027] This embodiment preferably uses a method of combining engraved lines with marks to realize the judgment of the feed amount. Specifically, the sliding shaft 2 is provided with an engraved line 23, and the sleeve 1 is provided with a slot 12. The slot 12 extends along the length direction of the sleeve 1, and the engraved line 23 is aligned with the slot 12.

[0028] Accordingly, the sleeve 1 is provided with a plurality of scale marks 13, the plurality of scale marks 13 are arranged adjacent to the slot 12, and the plurality of scale marks 13 are sequentially distributed along the length direction of the slot 12. In this embodiment, the plurality of scale marks 13 may be numbers, and in addition, the plurality of scale marks 13 may also be other types of symbols such as letters, and the advantage of using symbols is that they can play a role in encrypting tension data.

[0029] In practical applications, the sliding shaft 2 may be subjected to the torsion of the adjusting rod 3 and rotate accordingly. In order to avoid blocking the engraved line 23 , in the present embodiment, the engraved line 23 is an annular engraved line surrounding the sliding shaft 2 .

[0030] In this embodiment, the spring 4 is preferably used to apply elastic force between the sleeve 1 and the sliding shaft 2. In a specific application, the spring 4 with an appropriate length and compression capacity can be selected according to the compression distance. In addition, a mechanical sensor can be set in the sleeve 1 to detect the stress between the sliding shaft 2 and the spring 4.

[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 or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mechanical tension adjustment device, characterized in that: The invention comprises a sleeve (1), wherein a sliding shaft (2) capable of sliding forward and backward is arranged in the sleeve (1), an adjusting rod (3) is inserted into the sliding shaft (2) and the two are slidably matched, the rear end of the sliding shaft (2) is abutted against the rear end of the adjusting rod (3), the adjusting rod (3) passes through the front end of the sleeve (1), and the adjusting rod (3) is rotationally matched with the front end of the sleeve (1), the front end of the adjusting rod (3) is provided with a screw part (31), the adjusting rod (3) is sleeved with a spring (4), and the spring (4) is abutted between the front end of the sleeve (1) and the sliding shaft (2).

2. The mechanical tension adjustment device according to claim 1, characterized in that: The rear end of the adjusting rod (3) is provided with a rod cap (30).

3. The mechanical tension adjustment device according to claim 2, characterized in that: The rear end of the rod cap (30) is provided with a wrench clamping hole.

4. The mechanical tension adjustment device according to claim 2, characterized in that: A front cavity (20) and a rear cavity (21) are provided in the sliding shaft (2); the front cavity (20) and the rear cavity (21) are separated by an abutment portion (22); the adjusting rod (3) passes through the abutment portion (22) and the two are slidably matched.

5. The mechanical tension adjustment device according to claim 4, characterized in that: The rear end of the spring (4) is accommodated in the front cavity (20), and the rod cap (30) is accommodated in the rear cavity (21).

6. The mechanical tension adjustment device according to claim 1, characterized in that: The front end of the sleeve (1) is provided with an end head (10), the end head (10) is provided with a through hole (11), the adjustment rod (3) passes through the through hole (11), and the two are rotatably matched.

7. The mechanical tension adjustment device according to claim 1, characterized in that: The sliding shaft (2) is provided with a score line (23), the sleeve (1) is provided with a slot hole (12), the slot hole (12) extends along the length direction of the sleeve (1), and the score line (23) is aligned with the slot hole (12).

8. The mechanical tension adjustment device according to claim 7, characterized in that: The sleeve (1) is provided with a plurality of scale marks (13), the plurality of scale marks (13) are arranged adjacent to the slot hole (12), and the plurality of scale marks (13) are distributed in sequence along the length direction of the slot hole (12).

9. The mechanical tension adjustment device according to claim 7, characterized in that: The engraved line (23) is an annular engraved line surrounding the sliding shaft (2).

10. The mechanical tension adjustment device according to claim 6, characterized in that: The screw rod portion (31) is arranged at the front side of the end head (10), and the diameter of the screw rod portion (31) is larger than the diameter of the threaded portion of the adjusting rod (3).

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