An automatically adjustable tension chain assembly

Abstract

This invention relates to the field of chain transmission component technology, and more particularly to an automatically adjustable tension chain component; comprising a bracket, a sprocket, and a chain; a sliding block is slidably connected within a tension groove; an adjustment mechanism is provided on the sprocket; the adjustment mechanism can adjust the tooth thickness of the sprocket teeth to maintain maximum transmission force between the sprocket and the teeth; this invention achieves this by slidably connecting the teeth within the adjustment groove. When the teeth wear and the tooth thickness decreases, the fixed ring is turned upwards to allow the teeth to move, and then the adjustment ring is turned downwards to push the adjustment block downwards to further move the teeth, increasing the thickness of the teeth exposed on the sprocket. Subsequently, the fixed ring is turned downwards again to fix the teeth in place by the adjustment block and the fixed block together. This increases the thickness of the teeth exposed on the sprocket after wear, thereby compensating for the worn parts and restoring the connection between the sprocket and the chain and the transmission force to their maximum state.

Description

Technical Field

[0001] This invention relates to the field of chain transmission components, and more particularly to an automatically adjustable tension chain component. Background Technology

[0002] Chain assemblies generally include a chain and sprockets for the drive chain. After long-term transmission, the chain and sprockets may become loose. Therefore, in the existing technology, when the chain becomes loose, the distance between the sprockets is adjusted, or a driven wheel is added to squeeze the chain, thereby adjusting the tension between the chain and sprockets, so that the chain and sprockets are tightly connected and the transmission is efficient.

[0003] When a sprocket drives a chain, the friction between the sprocket and the chain causes the tooth thickness of the sprocket to decrease due to wear, which reduces the strength of the sprocket teeth and also reduces the transmission force between the sprocket and the chain. Generally, large sprockets are expensive to manufacture. When the teeth of large sprockets are worn, workers usually use tools such as files to repair them by grinding at the root of the sprocket teeth to increase the tooth thickness.

[0004] There are existing solutions that involve replacing worn sprocket teeth, such as the authorized utility model patent with application number CN201420233598.4. However, in actual use, replacing the teeth when they are only slightly worn would be wasteful, while not replacing them would affect the transmission between the sprocket and the chain, thus creating limitations.

[0005] To address this, we propose an automatically adjustable tension chain assembly. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides an automatically adjustable tension chain assembly, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatically adjustable tension chain assembly, comprising...

[0008] support;

[0009] Sprockets; the outer circumferential surface of the sprocket is evenly provided with teeth;

[0010] Chain; the chain is fitted over the outside of the sprocket;

[0011] The bracket has a tension groove; a sliding block is slidably connected in the tension groove; a driven wheel is rotatably connected to the sliding block; the driven wheel meshes with the chain; an adjusting spring is fixedly connected to the sliding block; the other end of the adjusting spring is fixedly connected to the tension groove.

[0012] The sprocket is equipped with an adjustment mechanism; the adjustment mechanism can adjust the tooth thickness of the sprocket teeth so that the sprocket and the teeth maintain maximum power transmission.

[0013] Preferably, the adjusting mechanism includes an adjusting groove, an adjusting ring, a fixing ring, an adjusting block, and a fixing block; the adjusting groove is evenly formed on the outer circumference of the sprocket, the number of adjusting grooves corresponds to the number of teeth of the sprocket, the teeth are slidably connected in the adjusting groove, and the teeth have inverted trapezoidal grooves; the adjusting ring and the fixing ring are both threadedly connected to the sprocket, and the fixing ring is located inside the adjusting ring; the adjusting block and the fixing block are both slidably connected to the sprocket, the lower end faces of the adjusting block and the fixing block are both inclined, the lower end faces of the adjusting block and the fixing block can respectively contact the two sides of the inverted trapezoidal groove, and the upper ends of the adjusting block and the fixing block can respectively contact the adjusting ring and the fixing ring.

[0014] By sliding the gear teeth into the adjusting groove, when the gear teeth wear down and the tooth thickness decreases, the fixed ring is turned upwards to allow the gear teeth to move. Then, the adjusting ring is turned downwards to push the adjusting block downwards, which in turn pushes the gear teeth to move further, increasing the thickness of the gear teeth exposed on the sprocket. Finally, the fixed ring is turned downwards again to fix the gear teeth in place by the adjusting block and the fixed block together. This increases the thickness of the gear teeth exposed on the sprocket after wear, thus compensating for the worn parts and restoring the engagement between the sprocket and the chain and the transmission power to their maximum state.

[0015] Preferably, the bracket is provided with a detection mechanism; the detection mechanism is capable of detecting the thickness of the wear on the sprocket teeth;

[0016] The detection mechanism includes a mounting block, a contact block, a detection spring, and a pressure sensor. A sliding groove is provided on the bracket. A pusher rod is fixedly connected within the sliding groove. The mounting block is slidably connected within the sliding groove and is fixedly connected to the output end of the pusher rod. A sliding telescopic sleeve is fixedly connected to the mounting block. The pressure sensor is fixedly connected to the mounting block. The contact block is fixedly connected to the end of the sliding telescopic sleeve away from the mounting block. The detection spring is located within the sliding telescopic sleeve, with one end fixedly connected to the contact block and the other end fixedly connected to the pressure sensor.

[0017] By setting up a detection mechanism to accurately detect the wear of the gear teeth, the wear of the spring and the No. 1 pressure sensor can be used to determine the size of the wear. Based on the obtained length of the wear, the operator can adjust the length of the gear teeth protruding from the sprocket, thus making the adjustment of the length of the gear teeth protruding from the sprocket more precise.

[0018] Preferably, the end faces of the adjusting ring and the fixed ring away from the gear teeth are both toothed; a connecting block is provided on the mounting block; teeth of the same thickness as the adjusting ring and the fixed ring are fixedly connected to the side of the connecting block near the sprocket; the teeth can mesh with the toothed end faces of the adjusting ring and the fixed ring.

[0019] Preferably, the connecting block is rotatably connected to the mounting block; a push spring is provided on the mounting block; the push spring is fixedly connected to the end of the connecting block away from the adjusting ring.

[0020] Preferably, electrode blocks are fixedly connected to the inner walls of both the mounting block and the sliding groove; the number of electrode blocks in the sliding groove is three.

[0021] By setting a connecting block on the mounting block and fixing teeth on the connecting block, the position of the mounting block can be moved by pushing an electric push rod, so that the teeth on the connecting block mesh with the end faces of the teeth of the fixing ring and the adjusting ring respectively. Then, by rotating the sprocket, the fixing ring and the adjusting ring rotate relative to the sprocket, thereby adjusting the length of the teeth exposed on the sprocket and fixing the teeth. In conjunction with the detection mechanism, the purpose of automatic detection and automatic adjustment can be achieved, so that manual measurement of the wear degree of the teeth and adjustment of the teeth is not required.

[0022] Preferably, the end of the connecting block that is fixed to the tooth is configured in an arc shape.

[0023] Preferably, a second pressure sensor is fixedly connected to the mounting block; the second pressure sensor is fixedly connected to the push spring; and the teeth on the toothed end face of the fixing ring are inclined.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention involves sliding the gear teeth within an adjusting groove. When the gear teeth wear down and their thickness decreases, the fixed ring is turned upwards to allow the gear teeth to move. Then, the adjusting ring is turned downwards, pushing the adjusting block downwards to further move the gear teeth, increasing the thickness of the gear teeth exposed on the sprocket. Subsequently, the fixed ring is turned downwards again, causing the adjusting block and the fixed block to fix the gear teeth in place. This increases the thickness of the gear teeth exposed on the sprocket after wear, thus compensating for the worn parts and restoring the engagement between the sprocket and the chain, as well as the transmission power, to their maximum state.

[0026] 2. This invention uses a detection mechanism to accurately detect the wear of the gear teeth, thereby detecting the wear of the gear teeth by the spring and the No. 1 pressure sensor. The operator can adjust the length of the gear teeth protruding from the sprocket based on the obtained length of the wear, thus making the adjustment of the length of the gear teeth protruding from the sprocket more precise.

[0027] 3. This invention sets a connecting block on the mounting block and fixes teeth on the connecting block. By pushing the electric push rod to move the position of the mounting block, the teeth on the connecting block can mesh with the end faces of the teeth of the fixing ring and the adjusting ring respectively. Then, by rotating the sprocket, the fixing ring and the adjusting ring rotate relative to the sprocket, thereby adjusting the length of the teeth exposed on the sprocket and fixing the teeth. In conjunction with the detection mechanism, it can achieve the purpose of automatic detection and automatic adjustment, so that it is not necessary to manually measure the wear degree of the teeth and adjust the teeth. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0031] Figure 4 This is a cross-sectional view of the mounting block, sliding telescopic sleeve, and connecting block of the present invention;

[0032] Figure 5 This is a cross-sectional view of the mounting block and electrode block in this invention;

[0033] Figure 6 This is a cross-sectional view of the sprocket adjusting ring, fixing ring, adjusting block, and fixing block in this invention;

[0034] Figure 7 for Figure 6 Diagram showing the positional relationship between the sprocket, adjusting block, fixing block, and gear teeth from a medium CC perspective.

[0035] In the diagram: 1. Bracket; 11. Tensioning groove; 12. Sliding block; 13. Driven wheel; 14. Adjusting spring; 2. Sprocket; 3. Gear teeth; 4. Chain; 5. Adjusting mechanism; 51. Adjusting groove; 52. Adjusting ring; 53. Fixing ring; 54. Adjusting block; 55. Fixing block; 56. Inverted trapezoidal groove; 6. Detection mechanism; 61. Mounting block; 62. Contact block; 63. Detection spring; 64. Pressure sensor No. 1; 65. Sliding groove; 66. Push electric actuator; 67. Sliding telescopic sleeve; 7. Connecting block; 71. Teeth; 72. Push spring; 73. Electrode block; 74. Pressure sensor No. 2. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1:

[0038] Refer to the instruction manual appendix Figure 1 An automatically adjustable tension chain 4-assembly includes a bracket 1;

[0039] Sprocket 2; Teeth 3 are evenly distributed on the outer circumference of sprocket 2;

[0040] Chain 4; Chain 4 is fitted onto the outside of sprocket 2;

[0041] Refer to the instruction manual appendix Figure 1 and 3 The bracket 1 has a tension groove 11; a sliding block 12 is slidably connected in the tension groove 11; a driven wheel 13 is rotatably connected on the sliding block 12; the driven wheel 13 meshes with the chain 4; an adjusting spring 14 is fixedly connected to the sliding block 12; the other end of the adjusting spring 14 is fixedly connected to the tension groove 11.

[0042] The sprocket 2 is provided with an adjustment mechanism 5; the adjustment mechanism 5 can adjust the tooth thickness of the sprocket 2 teeth 3 so that the sprocket 2 and the teeth 3 maintain the maximum transmission force.

[0043] Refer to the instruction manual appendix Figure 1 , 2 In this embodiment, the adjusting mechanism 5 includes an adjusting groove 51, an adjusting ring 52, a fixing ring 53, an adjusting block 54, and a fixing block 55. The adjusting groove 51 is evenly distributed on the outer circumference of the sprocket 2, and the number of adjusting grooves 51 corresponds to the number of teeth 3 of the sprocket 2. The teeth 3 are slidably connected in the adjusting groove 51, and an inverted trapezoidal groove 56 is provided on the teeth 3. The adjusting ring 52 and the fixing ring 53 are both threadedly connected to the sprocket 2, and the fixing ring 53 is located inside the adjusting ring 52. The adjusting block 54 and the fixing block 55 are both slidably connected to the sprocket 2. The lower end surfaces of the adjusting block 54 and the fixing block 55 are both inclined surfaces, and the lower end surfaces of the adjusting block 54 and the fixing block 55 can respectively contact the two sides of the inverted trapezoidal groove 56. The upper ends of the adjusting block 54 and the fixing block 55 can respectively contact the adjusting ring 52 and the fixing ring 53.

[0044] In this invention, the sprocket 2 drives the chain 4 to rotate, and the chain 4 drives the driven wheel 13 on the adjusting block 54 to rotate. After the sprocket 2 drives the chain 4 to rotate for a period of time, the chain 4 loosens, and the elastic force of the adjusting spring 14 always pushes the sliding block 12, so that the sliding block 12, along with the driven wheel 13, presses the chain 4 tightly, thereby keeping the chain 4 and the sprocket 2 in a tight engagement state, so as to achieve the purpose of automatically adjusting the tension of the chain 4 assembly.

[0045] In this embodiment, after the teeth 3 of the sprocket 2 wear down due to prolonged transmission with the chain 4, resulting in a decrease in the tooth thickness of the teeth 3, the operator first rotates the fixing ring 53, causing it to move upwards and creating a gap between the fixing ring 53 and the fixing block 55. Then, the adjusting ring 52 is rotated downwards, pushing the adjusting block 54 downwards. As the adjusting block 54 moves downwards, its lower inclined surface pushes the sidewall of the inverted trapezoidal groove 56 on the teeth 3, thus pushing the teeth 3 towards the direction where the adjusting groove 51 is exposed, increasing the tooth thickness of the teeth 3. While the teeth 3 are moving towards the direction where the adjusting groove 51 is exposed, they also push the fixing block 55 upwards through the sidewall of the other side of the inverted trapezoidal groove 56. This reduces the gap between the fixing block 55 and the upper end of the fixing ring 53, ensuring a sufficient distance between them when the fixing ring 53 is turned upwards. When the tooth thickness of the gear tooth 3 returns to its original thickness, the operator stops turning the adjusting ring 52 and then turns the fixing ring 53 downwards, bringing it into contact with the fixing block 55. The fixing block 55 is then pressed tightly, and the lower end of the fixing block 55 is in close contact with the side wall of the inverted trapezoidal groove 56 of the gear tooth 3. At this point, the fixing block 55 and the adjusting block 54 fix the position of the gear tooth 3. In this embodiment, the adjusting ring 52 contacts all the adjusting blocks 54, and the fixing ring 53 contacts all the fixing blocks 55, thus allowing the position of all the gear teeth 3 to be adjusted at once.

[0046] This invention slides the gear tooth 3 within the adjusting groove 51. When the gear tooth 3 wears and its thickness decreases, the fixing ring 53 is turned upwards to allow the gear tooth 3 to move. Then, the adjusting ring 52 is turned downwards to push the adjusting block 54 downwards, thereby increasing the thickness of the gear tooth 3 exposed on the sprocket 2. Subsequently, the fixing ring 53 is turned downwards again, causing the adjusting block 54 and the fixing block 55 to fix the gear tooth 3 in place. This increases the thickness of the gear tooth 3 exposed on the sprocket 2 after wear, thus compensating for the worn part and restoring the engagement and transmission power between the sprocket 2 and the chain 4 to their maximum state.

[0047] Refer to the instruction manual appendix Figure 1 and 4 In this embodiment, a detection mechanism 6 is provided on the bracket 1; the detection mechanism 6 can detect the thickness of the wear on the teeth 3 of the sprocket 2;

[0048] The detection mechanism 6 includes a mounting block 61, a contact block 62, a detection spring 63, and a first pressure sensor 64; a sliding groove 65 is provided on the bracket 1; a push electric rod 66 is fixedly connected in the sliding groove 65; the mounting block 61 is slidably connected in the sliding groove 65, and the mounting block 61 is fixedly connected to the output end of the push electric rod 66; a sliding telescopic sleeve 67 is fixedly connected to the mounting block 61; the first pressure sensor 64 is fixedly connected to the mounting block 61; the contact block 62 is fixedly connected to the end of the sliding telescopic sleeve 67 away from the mounting block 61; the detection spring 63 is located in the sliding telescopic sleeve 67, one end of the detection spring 63 is fixedly connected to the contact block 62, and the other end is fixedly connected to the first pressure sensor 64;

[0049] In this embodiment, the detection mechanism 6 can detect the wear of the gear teeth 3. When the sprocket 2 is first used, the controller controls the output end of the electric push rod 66 to push the mounting block 61 to a designated position, so that the mounting block 61 moves towards the sprocket 2, thereby contacting the contact block 62 with the gear teeth 3 of the sprocket 2. When the sprocket 2 rotates, the gear teeth 3 on the sprocket 2 contact the contact block 62 in sequence and squeeze the detection spring 63. At this time, the detection spring 63 transmits the pressure to the first pressure sensor 64, and the first pressure sensor 64 then transmits the pressure data to the controller through the transmission line. Subsequently, the electric push rod 66 is pushed to take the mounting block 61 back to the initial position. After the sprocket 2 has been used for a period of time, the controller controls the electric push rod 66 to push the gear teeth 3 back to the initial position. When the movable mounting block 61 reaches the designated position, the contact block 62 contacts the tooth 3 of the sprocket 2 again. At this time, the length of the tooth 3 exposed on the sprocket 2 after wear is reduced, and the pressure value transmitted to the first pressure sensor 64 by the detection spring 63 is also reduced accordingly. According to Hooke's Law formula F=KX, we can transform to obtain X=F / K, where X is the length worn away, F is the difference between the two detection pressures, and K is the spring constant of the detection spring 63. Therefore, based on the difference in pressure on the first pressure sensor 64, the length X of the worn tooth 3 can be detected. The operator can adjust the length of the tooth 3 exposed on the sprocket 2 based on the obtained length of the worn tooth 3, so that the adjustment of the length of the tooth 3 exposed on the sprocket 2 is more accurate.

[0050] This invention uses a detection mechanism 6 to accurately detect the wear of the gear teeth 3, thereby detecting the wear size of the gear teeth 3 by the spring 63 and the first pressure sensor 64. The operator can adjust the length of the gear teeth 3 protruding from the sprocket 2 based on the obtained length of wear, thus making the adjustment of the length of the gear teeth 3 protruding from the sprocket 2 more precise.

[0051] Refer to the instruction manual appendix Figure 2In this embodiment, the end faces of the adjusting ring 52 and the fixed ring 53 away from the gear tooth 3 are both set in a tooth shape; a connecting block 7 is provided on the mounting block 61; a tooth 71 with the same thickness as the adjusting ring 52 and the fixed ring 53 is fixedly connected to the side of the connecting block 7 near the sprocket 2; the tooth 71 can mesh with the toothed end faces of the adjusting ring 52 and the fixed ring 53.

[0052] Refer to the instruction manual appendix Figure 4 In this embodiment, the connecting block 7 is rotatably connected to the mounting block 61; a push spring 72 is provided on the mounting block 61; the push spring 72 is fixedly connected to the end of the connecting block 7 away from the adjusting ring 52;

[0053] Refer to the instruction manual appendix Figure 5 In this embodiment, electrode blocks 73 are fixedly connected to the inner walls of both the mounting block 61 and the sliding groove 65; the number of electrode blocks 73 in the sliding groove 65 is three.

[0054] In this embodiment, after the detection mechanism 6 detects the wear of the teeth 3 on the sprocket 2, it first controls the sprocket 2 to stop rotating. At the same time, the controller controls the electric push rod 66 to continue pushing forward, so that the teeth 71 fixed on the connecting block 7 pass over the adjusting ring 52 and reach above the fixed ring 53. In this embodiment, during the movement of the connecting block 7, the elastic force of the push spring 72 always pushes the connecting block 7, so that the end of the connecting block 7 with the teeth 71 contacts the sprocket 2. When the teeth 71 reach above the fixed ring 53, the pushing force of the push spring 72 makes the teeth 71 on the connecting block 7 mesh with the toothed end face of the fixed ring 53. At this time, the sprocket 2 is controlled to rotate. However, the fixed ring 53 on the sprocket 2 cannot rotate with the sprocket 2 because it is stuck by the teeth 71 on the connecting block 7. The fixed ring 53 rotates relative to the sprocket 2, which is equivalent to turning the fixed ring 53. The rotation speed of the sprocket 2 is constant, and only the teeth 71 need to be controlled. The engagement time between the fixed ring 53 and the sprocket 2 controls the number of rotations of the fixed ring 53, thereby controlling the upward rotation distance of the fixed ring 53. After the fixed ring 53 has rotated upward relative to the sprocket 2, the controller controls the sprocket 2 to stop rotating, and then controls the electric push rod 66 to move the mounting block 61 and the connecting block 7 a short distance away from the sprocket 2, so that the teeth 71 on the connecting block 7 move to the position of the adjusting ring 52, and the teeth 71 on the connecting block 7 mesh with the end face of the teeth of the adjusting ring 52. At this time, the sprocket 2 is controlled to rotate in the opposite direction, so that the adjusting ring 52 rotates downward relative to the sprocket 2, pushing the adjusting block 54 downward. Similarly, the downward rotation distance of the adjusting ring 52 is controlled by controlling the engagement time between the teeth 71 and the adjusting ring 52. After the adjusting ring 52 has rotated, the teeth 71 on the connecting block 7 move back to the position of the fixed ring 53, rotating the fixed ring 53 downward and fixing the gear teeth 3.

[0055] In this embodiment, one electrode block 73 is fixedly connected to the mounting block 61, and three electrode blocks 73 are fixedly connected to the inner wall of the sliding groove 65. The three electrode blocks 73 in the sliding groove 65 are numbered sequentially from the direction away from the sprocket 2 to the direction closer to the sprocket 2 as electrode block 1, electrode block 2, and electrode block 3. Thus, when electrode block 1 contacts electrode block 73 on the mounting block 61, the position of the mounting block 61 causes the contact block 62 to be squeezed by the gear teeth 3; when electrode block 2 contacts electrode block 73 on the mounting block 61, the position of the mounting block 61 causes the teeth 71 on the connecting block 7 to mesh with the end face of the teeth of the adjusting ring 52; when electrode block 3 contacts electrode block 73 on the mounting block 61, the mounting... The position of block 61 allows the teeth 71 on connecting block 7 to mesh with the end face of the toothed ring 53. In this embodiment, the motor block and the controller are connected through a transmission line. When the electrode block 73 on mounting block 61 contacts the first electrode block 73, current flows between the electrode block 73 on mounting block 61 and the first electrode block 73, and is then transmitted to the controller. The controller then controls the electric push rod 66 to stop pushing the mounting block 61, so that the detection spring 63 and the first pressure sensor 64 detect the wear of the gear teeth 3. Similarly, when the electrode block 73 on mounting block 61 is connected to the second electrode block 73 and the third electrode block 73, it indicates that the mounting block 61 has reached the corresponding position. The controller uses this to precisely control the position of the mounting block 61.

[0056] This invention provides a connecting block 7 on the mounting block 61, with teeth 71 fixedly connected to the connecting block 7. By pushing the electric push rod 66 to move the position of the mounting block 61, the teeth 71 on the connecting block 7 can mesh with the end faces of the teeth of the fixing ring 53 and the adjusting ring 52, respectively. Then, by rotating the sprocket 2, the fixing ring 53 and the adjusting ring 52 rotate relative to the sprocket 2, thereby adjusting the length of the tooth 3 exposed on the sprocket 2 and fixing the tooth 3. In conjunction with the detection mechanism 6, it can achieve automatic detection and automatic adjustment, thus eliminating the need for manual measurement of the wear degree of the tooth 3 and adjustment of the tooth 3.

[0057] Example 2:

[0058] Based on Example 1, refer to the appendix of the instruction manual. Figure 4 In this embodiment, the end of the connecting block 7 to which the tooth 71 is fixed is configured as an arc shape;

[0059] In this embodiment, a second pressure sensor 74 is fixedly connected to the mounting block 61; the second pressure sensor 74 is fixedly connected to the push spring 72; the teeth on the toothed end face of the fixing ring 53 are inclined.

[0060] In this embodiment, the end of the connecting block 7 with the tooth 71 is set in an arc shape, so that when the connecting block 7 moves toward the sprocket 2, when the arc surface of the connecting block 7 contacts the sprocket 2, the connecting block 7 can deflect upward along the arc surface and will not collide with the sprocket 2, thereby preventing damage to the sprocket 2, the connecting block 7, and the tooth 71.

[0061] In this embodiment, when the tooth 71 meshes with the fixed ring 53 and the sprocket 2 rotates, causing the fixed ring 53 to twist downward relative to the sprocket 2, the tooth 3 moves towards the direction exposing the adjusting groove 51, causing the inverted trapezoidal side that contacts the fixed block 55 to also move a certain distance. Therefore, the height at which the fixed block 55 contacts the side wall of the inverted trapezoidal groove 56 is slightly higher than its original height. Consequently, when the fixed ring 53 twists downward relative to the sprocket 2, the height after contacting the fixed block 55 is slightly higher than its original height. Thus, during the process of the sprocket 2 rotating and twisting the fixed ring 53 downward, the rotational speed of the sprocket 2 is fixed, and the time between the meshing of the tooth 71 and the fixed ring 53 is less than the time required to twist the fixed ring 53 upward, the fixed ring 53 is already twisted to the position of contact with the fixed block 55. During the remaining time, the sprocket 2 continues... As the sprocket 2 rotates, the fixed ring 53 and the fixed block 55 come into contact with each other, and the fixed ring 53 and the sprocket 2 can no longer rotate. When the fixed ring 53 rotates with the sprocket 2, the slightly inclined teeth on the fixed ring 53 and the teeth 71 cause the teeth 71 and the fixed ring 53 to interlock. The connecting block 7 is lifted and then falls down, so the pressure transmitted to the second pressure sensor 74 by the pushing spring 72 at the other end of the connecting block 7 changes. After the second sensor transmits the information of the pressure change to the controller, the controller controls the sprocket 2 to stop rotating and the mounting block 61 returns to its original position, thus reducing the wear on the fixed ring 53 and the teeth 71 and preventing damage to the teeth of the fixed ring 53 and the teeth 71 when the fixed ring 53 rotates with the sprocket 2, thereby improving the practical application effect of the present invention.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatically adjustable tension chain assembly, comprising: Support (1); Sprocket (2); the outer circumference of the sprocket (2) is uniformly provided with teeth (3); Chain (4); the chain (4) is sleeved on the outside of the sprocket (2); The bracket (1) has a tension groove (11); a sliding block (12) is slidably connected in the tension groove (11); a driven wheel (13) is rotatably connected on the sliding block (12); the driven wheel (13) meshes with the chain (4); an adjusting spring (14) is fixedly connected to the sliding block (12); the other end of the adjusting spring (14) is fixedly connected to the tension groove (11); Its features are: The sprocket (2) is provided with an adjustment mechanism (5); the adjustment mechanism (5) can adjust the tooth thickness of the sprocket (2) teeth (3) so that the sprocket (2) and the teeth (3) maintain the maximum transmission force. The adjusting mechanism (5) includes an adjusting groove (51), an adjusting ring (52), a fixing ring (53), an adjusting block (54), and a fixing block (55); the adjusting groove (51) is evenly distributed on the outer surface of the sprocket (2), and the number of adjusting grooves (51) corresponds to the number of teeth (3) of the sprocket (2). The teeth (3) are slidably connected in the adjusting groove (51), and the teeth (3) are provided with inverted trapezoidal grooves (56); the adjusting ring (52) and the fixing ring (53) are both threadedly connected to the sprocket (2). On the sprocket (2), the fixed ring (53) is located inside the adjusting ring (52); the adjusting block (54) and the fixed block (55) are both slidably connected to the sprocket (2), the lower end surfaces of the adjusting block (54) and the fixed block (55) are both inclined surfaces, the lower end surfaces of the adjusting block (54) and the fixed block (55) can respectively contact the two sides of the inverted trapezoidal groove (56), and the upper ends of the adjusting block (54) and the fixed block (55) can respectively contact the adjusting ring (52) and the fixed ring (53); The bracket (1) is provided with a detection mechanism (6); the detection mechanism (6) can detect the thickness of the wear on the teeth (3) of the sprocket (2); The detection mechanism (6) includes a mounting block (61), a contact block (62), a detection spring (63), and a first pressure sensor (64); a sliding groove (65) is provided on the bracket (1); a push electric push rod (66) is fixedly connected in the sliding groove (65); the mounting block (61) is slidably connected in the sliding groove (65), the mounting block (61) is fixedly connected to the output end of the push electric push rod (66), and a sliding telescopic sleeve (67) is fixedly connected on the mounting block (61); the first pressure sensor (64) is fixedly connected to the mounting block (61); the contact block (62) is fixedly connected to the end of the sliding telescopic sleeve (67) away from the mounting block (61); the detection spring (63) is located in the sliding telescopic sleeve (67), one end of the detection spring (63) is fixedly connected to the contact block (62), and the other end is fixedly connected to the first pressure sensor (64).

2. The automatically adjustable tension chain assembly according to claim 1, characterized in that: The end faces of the adjusting ring (52) and the fixed ring (53) away from the gear teeth (3) are both set in a tooth shape; a connecting block (7) is provided on the mounting block (61); a tooth (71) with the same thickness as the adjusting ring (52) and the fixed ring (53) is fixedly connected to the side of the connecting block (7) near the sprocket (2); the tooth (71) can mesh with the toothed end faces of the adjusting ring (52) and the fixed ring (53).

3. The automatically adjustable tension chain assembly according to claim 2, characterized in that: The connecting block (7) is rotatably connected to the mounting block (61); a push spring (72) is provided on the mounting block (61); the push spring (72) is fixedly connected to one end of the connecting block (7) away from the adjusting ring (52).

4. The automatically adjustable tension chain assembly according to claim 3, characterized in that: Electrode blocks (73) are fixedly connected to the inner walls of both the mounting block (61) and the sliding groove (65); the number of electrode blocks (73) in the sliding groove (65) is three.

5. The automatically adjustable tension chain assembly according to claim 4, characterized in that: The end of the connecting block (7) to which the tooth (71) is fixed is configured in an arc shape.

6. The automatically adjustable tension chain assembly according to claim 5, characterized in that: A second pressure sensor (74) is fixedly connected to the mounting block (61); the second pressure sensor (74) is fixedly connected to the push spring (72); the teeth on the toothed end face of the fixing ring (53) are inclined.

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