Tension-adjustable tensioner

Abstract

The utility model belongs to the field of tensioners, and particularly relates to a tension-adjustable tensioner which comprises a base, the bottom of the base is sleeved with a supporting seat in a sliding mode, the top of the supporting seat is fixedly connected with a supporting rod, a supporting spring is arranged on the outer side of the supporting rod, and the outer side of the supporting rod is sleeved with a connecting rod in a sliding mode. One end of the supporting spring makes contact with the supporting base, the other end of the supporting spring makes contact with the connecting rod, and an upper guide wheel is arranged on the top of the connecting rod. Through the design of the upper guide wheel and the side guide wheels, the belt can be supported and transmitted, the upper guide wheel can elastically support the belt through the supporting spring, the stable tensioning state during belt transmission can be maintained by buffering vibration and compensating belt abrasion and tension change, stable transmission of a transmission system is guaranteed, and the service life of the transmission system is prolonged. And the elastic supporting force of the supporting spring is adjustable, so that the tension on belt transmission can be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of tensioner technology, specifically to a tensioner with adjustable tension. Background Technology

[0002] A belt tensioner is a crucial component of a belt drive system, consisting of a housing, springs, and other parts. It automatically adjusts belt tension, providing appropriate tension to prevent slippage when the belt wears, becomes slack, or experiences tension fluctuations due to load changes. This ensures the normal operation and transmission efficiency of equipment such as automotive engines and industrial production lines.

[0003] Utility model patent CN212225905U discloses a belt tensioner with optimized wrench mouth position. The belt tensioner includes a tensioning arm; a first end of the tensioning arm is fixed to a base via a mounting bolt; no other structures are mounted on the upper surface of the first end of the tensioning arm; a bolt is fixed to the second end of the tensioning arm; a pulley is mounted on the bolt via a bearing and can rotate around the bolt; a dust cover is provided above the bearing; a through hole is provided in the dust cover; the end of the bolt extends beyond the through hole of the dust cover. This utility model saves on the number of parts, reduces costs, and does not affect the use of the belt tensioner itself.

[0004] In the aforementioned prior art, it is inconvenient to adjust the tension during the use of the tensioner, which can lead to problems such as the belt slipping due to wear, stretching, or load changes, or excessive wear due to excessive tightness. Furthermore, the tensioner relies on a support spring for support, but the support spring is not easy to remove from the device, making it difficult to maintain. Damage to the support spring can affect the operation of the tensioner. Utility Model Content

[0005] The purpose of this invention is to provide a tensioner with adjustable tension, which solves the problem of inconvenience in adjusting the tension and the problem of inconvenient disassembly and maintenance of the support spring.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tension-adjustable tensioner, comprising a base, a support seat slidably sleeved at the bottom of the base, a support rod fixedly connected to the top of the support seat, a support spring provided on the outer side of the support rod, a connecting rod slidably sleeved on the outer side of the support rod, one end of the support spring contacting the support seat, the other end of the support spring contacting the connecting rod, an upper guide wheel provided at the top of the connecting rod, side guide wheels provided at both ends of the base, an adjustment mechanism provided on the connecting rod, and a connecting mechanism provided on the support seat.

[0007] Preferably, a sealing sleeve is slidably fitted onto the outer side of the connecting rod, and the sealing sleeve is fixedly connected to the base. By designing the sealing sleeve, the connection between the connecting rod and the base can be sealed.

[0008] Preferably, the adjusting mechanism includes a connecting block, with the connecting block slidably connected inside the connecting rod. The connecting block is slidably connected to the base. A screw is threadedly connected inside the connecting block, and the screw is rotatably connected to the base via a bearing. A first bevel gear is fixedly sleeved on the outer side of the screw, and a second bevel gear meshes with the outer side of the first bevel gear. A knob is fixedly connected to the outer side of the second bevel gear, and the knob is rotatably connected to the base via a bearing. A guide block is fixedly connected to the left end of the connecting rod, and the guide block is slidably connected to the base. This adjusting mechanism facilitates the adjustment of the relative position between the connecting rod and the base.

[0009] Preferably, the base has a guide groove inside, and a guide block is slidably connected inside the guide groove. By designing the guide groove, the guide block can slide along the base.

[0010] Preferably, the connecting mechanism includes a pull rod, which is slidably sleeved inside the base. A plug is fixedly connected to the outer side of the pull rod, and the plug is slidably connected to both the base and the support. A slider is fixedly connected to the upper end of the pull rod, and the slider is slidably connected to the base. A retaining spring is provided inside the base. A magnetic block is fixedly connected to the lower end of the pull rod, and the magnetic block is slidably connected to the base. A magnet is fixedly connected inside the base. This connecting mechanism facilitates the disassembly of the support.

[0011] Preferably, the support base has a slot inside, and a plug is slidably connected inside the slot. By designing the slot, the plug can slide inside the support base.

[0012] Preferably, one end of the clamping spring is fixedly connected to the slider, and the other end of the clamping spring is fixedly connected to the base. By designing the clamping spring, the force of the clamping spring can be applied to the slider.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through the design of the upper guide wheel and the side guide wheel, can support the belt transmission. The upper guide wheel can rely on the support spring to provide elastic support for the belt. It can buffer vibration, compensate for belt wear and tension changes, maintain a stable tension state during belt transmission, and ensure smooth operation of the transmission system. Moreover, the elastic support force of the support spring is adjustable, which can flexibly adjust the tension of the belt transmission.

[0015] 2. This utility model, through the design of the support base, can support the support spring. By inserting the plug into the slot, the support base can be limited, and the support base can be connected and fixed to the base. By pulling the pull rod outward, the plug can be separated from the support base, making it easy to remove the support base from the base and then take out the support spring for easy maintenance. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This utility model Figure 2 Enlarged view of point B.

[0020] In the diagram: 1. Base; 2. Support base; 3. Support rod; 4. Support spring; 5. Connecting rod; 6. Sealing sleeve; 7. Upper guide wheel; 8. Adjustment mechanism; 9. Connecting mechanism; 10. Side guide wheel; 81. Connecting block; 82. Screw; 83. Bevel gear one; 84. Bevel gear two; 85. Knob; 86. Guide block; 87. Guide groove; 91. Pull rod; 92. Insert block; 93. Slot; 94. Slider; 95. Clamping spring; 96. Magnetic block; 97. Magnet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2An adjustable tensioner includes a base 1, a support seat 2 slidably sleeved at the bottom of the base 1, a support rod 3 fixedly connected to the top of the support seat 2, a support spring 4 provided on the outside of the support rod 3, a connecting rod 5 slidably sleeved on the outside of the support rod 3, one end of the support spring 4 contacting the support seat 2, the other end of the support spring 4 contacting the connecting rod 5, a sealing sleeve 6 slidably sleeved on the outside of the connecting rod 5, the sealing sleeve 6 being fixedly connected to the base 1, and by designing the sealing sleeve 6, the connection between the connecting rod 5 and the base 1 can be sealed, an upper guide wheel 7 is provided at the top of the connecting rod 5, side guide wheels 10 are provided at both ends of the base 1, an adjustment mechanism 8 is provided on the connecting rod 5, and a connecting mechanism 9 is provided on the support seat 2.

[0023] Please see Figure 1 , Figure 2 , Figure 3 The adjusting mechanism 8 includes a connecting block 81. The connecting block 81 is slidably connected inside the connecting rod 5 and is slidably connected to the base 1. The connecting block 81 is threadedly connected to a screw 82, which is rotatably connected to the base 1 via a bearing. A bevel gear 83 is fixedly sleeved on the outside of the screw 82, and a bevel gear 84 meshes with the outside of the bevel gear 83. A knob 85 is fixedly connected to the outside of the bevel gear 84 and is rotatably connected to the base 1 via a bearing. A guide block 86 is fixedly connected to the left end of the connecting rod 5 and is slidably connected to the base 1. A guide groove 87 is provided inside the base 1, and the guide block 86 is slidably connected inside the guide groove 87. By designing the guide groove 87, the guide block 86 can slide along the base 1. By designing the adjusting mechanism 8, the relative position of the connecting rod 5 and the base 1 can be easily adjusted.

[0024] Please see Figure 1 , Figure 2 , Figure 4 The connecting mechanism 9 includes a pull rod 91, which is slidably sleeved inside the base 1. A plug 92 is fixedly connected to the outside of the pull rod 91. The plug 92 is slidably connected to both the base 1 and the support 2. A slot 93 is provided inside the support 2, and the plug 92 is slidably connected inside the slot 93. The slot 93 is designed so that the plug 92 can slide inside the support 2. A slider 94 is fixedly connected to the upper end of the pull rod 91. The slider 94 is slidably connected to the base 1. A retaining spring 95 is provided inside the base 1. One end of the retaining spring 95 is fixedly connected to the slider 94, and the other end of the retaining spring 95 is fixedly connected to the base 1. The retaining spring 95 is designed so that its force can act on the slider 94. A magnetic block 96 is fixedly connected to the lower end of the pull rod 91. The magnetic block 96 is slidably connected to the base 1. A magnet 97 is fixedly connected inside the base 1. The connecting mechanism 9 facilitates the disassembly of the support 2.

[0025] The specific implementation process of this utility model is as follows: When in use, the belt passes through the lower part of the upper guide wheel 7, and at the same time, the belt passes through the end of the side guide wheel 10 away from the base 1, which can support the belt for transmission. The upper guide wheel 7 can elastically support the belt by relying on the support spring 4. It can maintain a stable tension state during belt transmission by buffering vibration, compensating for belt wear and tension changes, and ensuring the smooth operation of the transmission system.

[0026] When the elastic force of the support spring 4 needs to be adjusted, simply turn the knob 85. The knob 85 drives the second bevel gear 84 to rotate, which in turn drives the first bevel gear 83 to rotate. The first bevel gear 83 drives the screw 82 to rotate, causing the connecting block 81 to make a threaded movement. The connecting block 81 will pull the connecting rod 5 down, and the connecting rod 5 will drive the guide block 86 to slide along the guide groove 87. The connecting rod 5 can press down on the support spring 4, making the elastic support force of the support spring 4 adjustable and flexibly adjusting the tension of the belt drive.

[0027] When it is necessary to disassemble the support base 2, pull the lever 91 outwards. The lever 91 drives the slider 94 to move, and the slider 94 will press against the clamping spring 95. At the same time, the lever 91 will drive the magnetic block 96 to move horizontally, and the lever 91 will also drive the insertion block 92 to move horizontally. When the magnetic block 96 is attracted to the magnet 97, the insertion block 92 will be pulled out from the inside of the support base 2. Then the support base 2 and the connecting rod 5 can be taken out from the inside of the base 1, and the support spring 4 can be taken out for easy maintenance.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tension-adjustable tensioner, comprising a base (1), characterized in that: The base (1) is slidably fitted with a support seat (2) at its bottom. The support seat (2) is fixedly connected with a support rod (3) at its top. A support spring (4) is provided on the outside of the support rod (3). A connecting rod (5) is slidably fitted on the outside of the support rod (3). One end of the support spring (4) is in contact with the support seat (2), and the other end of the support spring (4) is in contact with the connecting rod (5). An upper guide wheel (7) is provided on the top of the connecting rod (5). Side guide wheels (10) are provided on both the left and right ends of the base (1). An adjustment mechanism (8) is provided on the connecting rod (5), and a connecting mechanism (9) is provided on the support seat (2).

2. The tension-adjustable tensioner according to claim 1, characterized in that: A sealing sleeve (6) is slidably sleeved on the outside of the connecting rod (5), and the sealing sleeve (6) is fixedly connected to the base (1).

3. The tension-adjustable tensioner according to claim 1, characterized in that: The adjusting mechanism (8) includes a connecting block (81). The connecting block (81) is slidably connected inside the connecting rod (5). The connecting block (81) is slidably connected to the base (1). The connecting block (81) is threadedly connected to a screw (82). The screw (82) is rotatably connected to the base (1) through a bearing. A bevel gear (83) is fixedly sleeved on the outside of the screw (82). A bevel gear (84) meshes on the outside of the bevel gear (83). A knob (85) is fixedly connected to the outside of the bevel gear (84). The knob (85) is rotatably connected to the base (1) through a bearing. A guide block (86) is fixedly connected to the left end of the connecting rod (5). The guide block (86) is slidably connected to the base (1).

4. The tension-adjustable tensioner according to claim 1, characterized in that: The base (1) has a guide groove (87) inside, and a guide block (86) is slidably connected inside the guide groove (87).

5. The tension-adjustable tensioner according to claim 1, characterized in that: The connecting mechanism (9) includes a pull rod (91), which is slidably sleeved inside the base (1). A plug (92) is fixedly connected to the outside of the pull rod (91). The plug (92) is slidably connected to the base (1) and the support (2) respectively. A slider (94) is fixedly connected to the upper end of the pull rod (91). The slider (94) is slidably connected to the base (1). A retaining spring (95) is provided inside the base (1). A magnetic block (96) is fixedly connected to the lower end of the pull rod (91). The magnetic block (96) is slidably connected to the base (1). A magnet (97) is fixedly connected inside the base (1).

6. The tension-adjustable tensioner according to claim 1, characterized in that: The support base (2) has a slot (93) inside, and a plug (92) is slidably connected inside the slot (93).

7. A tension-adjustable tensioner according to claim 5, characterized in that: One end of the clamping spring (95) is fixedly connected to the slider (94), and the other end of the clamping spring (95) is fixedly connected to the base (1).

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