A tension support mechanism

Abstract

A tensioning support mechanism of the present invention comprises an oil cylinder, a movable support rod, a tensioning sprocket nut, a protective cutter, a tensioning sprocket, an O-ring, bolts, washers, nuts, an adjustment valve assembly 1 and an adjustment valve assembly 2. The oil cylinder of the tensioning support mechanism is equipped with an adjustment valve assembly 1 and an adjustment valve assembly 2. The cavity of the oil cylinder is filled with a liquid medium. The tensioning support mechanism is installed on a fixed plate through a long hole on the oil cylinder by means of bolts, washers and nuts. The tensioning sprocket of the tensioning support mechanism is meshed with a clamping chain to achieve tensioning and supporting the clamping chain. The present invention provides a tensioning support mechanism with a simple structure that can automatically keep the tensioning force of the chain constant.

Description

Technical Field

[0001] The invention relates to a tensioning mechanism, in particular to a tensioning support mechanism for adjusting chain tightness and supporting a sprocket in a clamping chain drive, and belongs to the field of mechanical engineering. Background Art

[0002] In production and life, transmission and transportation mechanisms are indispensable, such as the processing and transportation of parts, the mobile packaging of products, the inspection and maintenance of assembly line workshops, and the harvesting of crops in agricultural production. In the process of moving these items, a variety of complex mechanisms are usually required, and the use of chain clamping transmission is a simple, feasible and effective way to achieve it. In order to ensure a certain clamping force in the chain clamping transmission, the current method is to add a tensioning sprocket to the chain clamping transmission, and adjust the tension of the chain by directly and rigidly moving the tensioning sprocket to generate the clamping force of the chain. However, if the volume of the clamped object changes and becomes larger during the clamping transmission, the tensioning method of directly and rigidly moving the tensioning sprocket cannot automatically adjust the tightness of the chain, nor can it ensure that the clamping transmission force remains constant. This tensioning method of rigidly moving the tensioning sprocket not only makes the operation and adjustment complicated, but also easily damages the clamped object or fails to clamp the clamped object due to the inability to maintain a constant tensioning force. Summary of the invention

[0003] In view of the shortcomings of the current chain clamping transmission technology, the present invention provides a tensioning support mechanism with a simple structure that can automatically maintain a constant tension force of the chain. The technical solution adopted by the present invention is: a tensioning support mechanism of the present invention includes an oil cylinder, a movable support rod, a tensioning sprocket nut, a protective cutter, a tensioning sprocket, an O-ring, bolts, washers, nuts, an adjustment valve assembly 1, and an adjustment valve assembly 2. The oil cylinder of the tensioning support mechanism is installed with an adjustment valve assembly 1 and an adjustment valve assembly 2. The cavity of the oil cylinder is filled with a liquid medium. The tensioning support mechanism is installed on a fixed plate through a long hole on the oil cylinder using bolts, washers, and nuts. The tensioning sprocket of the tensioning support mechanism is connected to the clamping The chain is engaged to achieve the tensioning and supporting of the clamping chain. It is characterized in that the adjusting valve assembly includes an adjusting valve body, a sealing ring, a plunger, a spring, and an adjusting sleeve. The adjusting valve body is connected to the internal thread of the oil cylinder through an external thread. A plunger is installed in the adjusting valve body. One end of the spring is pressed on the plunger, and the other end of the spring is placed in the hole of the adjusting sleeve. The adjusting sleeve is connected to the adjusting valve body through a thread. Rotating the adjusting sleeve can adjust the pressure of the spring on the plunger, and can also adjust the position of the plunger in the adjusting valve body. The second adjusting valve assembly is characterized in that the second adjusting valve assembly includes a second adjusting valve body, a second sealing ring, a second plunger, a locking nut, and an adjusting bolt. The diameter of the second adjusting plunger is smaller than the diameter of the first plunger. The second adjusting valve body is connected to the second internal thread of the oil cylinder through the second external thread. The second plunger is installed in the second adjusting valve body. The adjusting bolt is installed on the second adjusting valve body through a thread. The threaded end of the adjusting bolt is semi-spherical. The semi-spherical end of the adjusting bolt is pressed on the second plunger. The locking nut is installed on the adjusting bolt. The position of the second plunger in the second adjusting valve body can be adjusted by rotating the adjusting bolt. The tensioning support mechanism is characterized in that the oil cylinder includes a cavity, an internal thread 1, an internal thread 2, and a long hole, the movable support rod includes a main plunger, an auxiliary plunger, and a sprocket mounting frame, the main plunger is provided with an oil seal groove and a shallow groove, the auxiliary plunger is provided with a through hole, the movable support rod is installed in the cavity of the oil cylinder, the outer surface 1 of the main plunger is transitionally matched with the inner surface of the cavity of the oil cylinder, the outer surface 2 of the auxiliary plunger is transitionally matched with the inner surface of the cavity of the oil cylinder, an O-ring is installed in the oil seal groove of the main plunger, the tensioning support mechanism is characterized in that a sprocket mounting frame is provided on the movable support rod, the tensioning sprocket is installed on the sprocket mounting frame through a tensioning sprocket nut, the protective cutter is installed on the outside of the tensioning sprocket and is fixed to the sprocket mounting frame through a tensioning sprocket nut, and the protective cutter is provided with teeth.

[0004] The tension support mechanism of the present invention can change the position of the mounting on the fixed plate by moving along the long hole on the oil cylinder, thereby realizing the pre-adjustment of the tightness of the clamping chain. After the adjustment, the nut can be tightened to fix the tension support mechanism to the fixed plate. The pressure of the spring on the main plunger can be adjusted by rotating the adjustment sleeve, and the position of the main plunger in the adjustment valve body can also be adjusted to adjust the pressure of the liquid medium, thereby adjusting the pressure of the liquid medium on the moving support rod. The moving support rod is equipped with a tension sprocket, so the tension and support force of the tension sprocket on the clamping chain can be adjusted. Therefore, the tension and support force of the clamping chain can be adjusted by rotating the adjustment sleeve. When the clamping transmission system is working, the clamping chain clamps the object and moves. According to the principle of action and reaction force, the reaction force of the clamping force of the clamped object is transmitted to the tensioning sprocket of the tensioning support mechanism through the chain, and is transmitted to the mobile support rod through the sprocket mounting frame, and then transmitted to the main plunger and the auxiliary plunger, and then transmitted to the liquid medium in the cavity of the oil cylinder through the main plunger and the auxiliary plunger. Under the action of the liquid medium, the impact force of the reaction is buffered. At the same time, the reaction force is transmitted to the main plunger through the liquid medium, and then transmitted to the spring. The elastic action of the spring further buffers the impact force. At the same time, when the amount of clamped objects entering the clamping chain changes, the tensioning force and supporting force of the clamping chain can be maintained under the action of the spring elastic force of the spring and the pressure of the liquid medium. In the clamping transmission of the clamping chain, the tensioning support mechanism can automatically realize the dynamic tensioning of the clamping chain according to the amount of clamped objects, and clamp the objects with a constant clamping force.

[0005] By rotating the adjusting bolt of the adjusting valve assembly 2, the position of the plunger 2 in the adjusting valve body 2 can be adjusted. After the adjustment, the locking nut is turned to fix the adjusting bolt. The threaded end of the adjusting bolt is semi-spherical, which can reduce the friction between the adjusting bolt and the plunger 2 during the adjustment process. Since the diameter of the adjusting plunger 2 is smaller than the diameter of the plunger 1, the adjusting valve assembly 2 can achieve fine adjustment of the pressure of the liquid medium in the oil cylinder compared to the adjusting valve assembly 1, thereby achieving fine adjustment of the clamping force of the clamping chain.

[0006] The mobile support rod is designed with two plungers, a main plunger and an auxiliary plunger. When the clamping chain moves while clamping an object, the ginger pieces buried in the soil will produce a downward pulling force on the clamping chain. This pulling force is transmitted to the mobile support rod through the tensioning sprocket. The mobile support rod is designed with two plungers, a main plunger and an auxiliary plunger. This structure can improve the bending stress on the mobile support rod.

[0007] An O-ring and a shallow groove are installed in the oil seal groove of the main plunger to prevent the hydraulic medium from leaking between the outer surface of the main plunger and the inner surface of the cavity of the oil cylinder.

[0008] The beneficial effects of the patent of the present invention are as follows: the present invention proposes a tensioning support mechanism for a sprocket, which has two adjustment devices, namely, an adjustment valve assembly 1 and an adjustment valve assembly 2, and can realize large adjustment and fine adjustment of the clamping force of the clamping chain. The tensioning support mechanism can buffer the impact force of the clamped object on the clamping chain, and in the clamping transmission of the clamping chain, the tensioning support mechanism can be dynamically tensioned according to the amount of the object, and the object movement can be clamped with a constant clamping force. By rotating the adjustment bolt of the adjustment valve assembly 2, the position of the plunger 2 in the adjustment valve body 2 can be adjusted. After the position is adjusted, the locking nut is rotated to fix the adjustment bolt. The threaded end of the adjustment bolt is semi-spherical, which can reduce the friction between the adjustment bolt and the plunger 2 during the adjustment process. Since the diameter of the adjustment plunger 2 is smaller than the diameter of the plunger 1, the adjustment valve assembly 2 can realize fine adjustment of the pressure of the liquid medium in the oil cylinder compared with the adjustment valve assembly 1, thereby realizing fine adjustment of the clamping force of the clamping chain. The moving support rod is designed with two plungers, a main plunger and an auxiliary plunger. This structure can improve the bending stress on the moving support rod. An O-ring and a shallow groove are installed in the oil seal groove of the main plunger to prevent the hydraulic medium from leaking from the outer surface of the main plunger and the inner surface of the cavity of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the ginger harvesting clamping transmission chain drive system;

[0010] Figure 2 A front view of the tensioning support mechanism of the present invention;

[0011] Figure 3 A top view of the tension support mechanism of the present invention;

[0012] Figure 4 Adjusting valve assembly one;

[0013] Figure 5 Adjusting valve assembly 2;

[0014] Figure 6 Front view of hydraulic cylinder;

[0015] Figure 7 Top view of hydraulic cylinder;

[0016] Figure 8 Mobile support cross-section view;

[0017] Fig. 9 Top view of the protective cutter;

[0018] In the figure: 1, left fixed plate, 2, left driving sprocket 1, 3, left clamping chain, 4, left driving sprocket 2, 5, left driving sprocket, 6, right driving sprocket, 7, right clamping chain, 8, tensioning support mechanism, 9, right driving sprocket 2, 10, right driving sprocket 1, 11, right fixed plate, 801, oil cylinder, 802, movable support rod, 803, tensioning sprocket nut, 804, protective cutter, 805, tensioning sprocket, 806, O-ring, 807, bolt, 808, washer, 809, nut, 810, adjusting valve assembly 1, 820, adjusting valve assembly 2, 811, adjusting valve body 1, 812, sealing ring 1, 813, plunger 1, 814, spring, 815, adjusting sleeve, 8111, external thread 1, 821, adjusting valve body 2, 822, sealing ring 2, 823, plunger 2, 824, locking nut, 825, adjusting bolt, 8211, external thread 2, 8011, cavity, 8012, internal thread 1, 8013, internal thread 2, long hole 8014, 80111, inner surface, 8021, main plunger, 8022, auxiliary plunger, 8023, through hole, 8024, oil seal groove, 8025, shallow groove, 8026, sprocket mounting bracket, 80211, external surface 1, 80221, external surface 2, 8041, knife tooth. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The present invention proposes a tensioning support mechanism, which is implemented by the following technical solutions:

[0020] Taking the tensioning support mechanism in the ginger harvesting clamping transmission chain transmission system as an example, the technical solution adopted by the present invention is: the ginger harvesting clamping transmission chain transmission system includes a left fixed plate 1, a left transmission sprocket 1 2, a left clamping chain 3, a left transmission sprocket 2 4, a left drive sprocket 5, a right drive sprocket 6, a right clamping chain 7, a tensioning support mechanism 8, a right transmission sprocket 2 9, a right transmission sprocket 1 10, and a right fixed plate 11. The left transmission sprocket 1 2, the left transmission sprocket 2 4, and the left drive sprocket 5 are installed on the left fixed plate 1, the left clamping chain 3 is wound around the left transmission sprocket 1 2, the left transmission sprocket 2 4, and the left drive sprocket 5, the right drive sprocket 6, the right transmission sprocket 2 9, and the right transmission sprocket 1 10 are installed on the right fixed plate 11, and the right clamping chain 7 is wound around the right drive sprocket 6, the right transmission sprocket 2 9, and the right transmission sprocket 1 10. When the ginger is harvested, the ginger seedlings are clamped by the left clamping chain 3 and the right clamping chain 7. The left clamping chain 3 and the right clamping chain 7 are respectively driven by the left drive sprocket 5 and the right drive sprocket 6 to clamp the ginger seedlings in the left clamping chain. The ginger seedlings are transmitted between the holding chain 3 and the right clamping chain 7. The tensioning support mechanism 8 is installed on the left fixed plate 1 and the right fixed plate 11 through the long hole 8014 on the cylinder 801 by means of bolts 807, washers 808 and nuts 809. There are a total of 4 tensioning support mechanisms 8 in this ginger harvesting clamping transmission chain transmission system, of which the tensioning sprockets 805 of two tensioning support mechanisms 8 are engaged with the left clamping chain 3 to achieve tensioning and supporting the left clamping chain 3, and the tensioning sprockets 805 of the other two tensioning support mechanisms 8 are engaged with the right clamping chain 7 to achieve tensioning and supporting the right clamping chain 7. A tensioning support mechanism of the present invention comprises an oil cylinder 801, a movable support rod 802, a tensioning sprocket nut 803, a protective cutter 804, a tensioning sprocket 805, an O-ring 806, a bolt 807, a washer 808, a nut 809, an adjustment valve assembly 1 810, and an adjustment valve assembly 2 820. The oil cylinder 801 of the tensioning support mechanism is provided with an adjustment valve assembly 1 810 and an adjustment valve assembly 2 820. The cavity 8011 of the oil cylinder 801 is filled with a liquid medium. The adjustment valve assembly 1 810 comprises an adjustment valve body 1 811, a sealing ring 1 812, and a pressure relief valve 813. , plunger 813, spring 814, adjusting sleeve 815, the adjusting valve body 811 is connected to the internal thread 8012 of the cylinder 801 through the external thread 8111, the plunger 813 is installed in the adjusting valve body 811, one end of the spring 814 is pressed on the plunger 813, and the other end of the spring 814 is placed in the hole of the adjusting sleeve 815, the adjusting sleeve 815 is connected to the adjusting valve body 811 through threads, and the rotating adjusting sleeve 815 can adjust the pressure of the spring 814 on the plunger 813, and can also adjust the position of the plunger 813 in the adjusting valve body 811.The tension support mechanism is characterized in that the second adjustment valve assembly 820 includes a second adjustment valve body 821, a second sealing ring 822, a second plunger 823, a locking nut 824, and an adjustment bolt 825. The diameter of the second adjustment plunger 823 is smaller than the diameter of the first plunger 813. The second adjustment valve body 821 is connected to the second internal thread 8013 of the oil cylinder 801 through the second external thread 8211. The second plunger 823 is installed in the second adjustment valve body 821. The adjustment bolt 825 is installed on the second adjustment valve body 821 through threads. The threaded end of the adjustment bolt 825 is semi-spherical. The semi-spherical end of the adjustment bolt 825 is pressed on the second plunger 823. The locking nut 824 is installed on the adjustment bolt 825. The position of the second plunger 823 in the second adjustment valve body 821 can be adjusted by rotating the adjustment bolt 825. The tensioning support mechanism is characterized in that the oil cylinder 801 includes a cavity 8011, an internal thread 1 8012, an internal thread 2 8013, and a long hole 8014; the movable support rod 802 includes a main plunger 8021, an auxiliary plunger 8022, and a sprocket mounting frame 8026; the main plunger 8021 is provided with an oil seal groove 8024 and a shallow groove 8025; the auxiliary plunger 8022 is provided with a through hole 8023; the movable support rod 802 is installed in the cavity 8011 of the oil cylinder 801; the outer surface 1 80211 of the main plunger 8021 and the inner surface 80111 of the cavity 8011 of the oil cylinder 801 are transitionally matched; the auxiliary plunger 8022 is provided with a through hole 8023; the movable support rod 802 is installed in the cavity 8011 of the oil cylinder 801; the outer surface 1 80211 of the main plunger 8021 and the inner surface 80111 of the cavity 8011 of the oil cylinder 801 are transitionally matched; The outer surface 80221 of the plunger 8022 and the inner surface 80111 of the cavity 8011 of the cylinder 801 are transitionally matched, and an O-ring 806 is installed in the oil seal groove 8024 of the main plunger 8021. The tensioning support mechanism is characterized in that a sprocket mounting frame 8026 is provided on the movable support rod 802, and a tensioning sprocket 805 is installed on the sprocket mounting frame 8026 through a tensioning sprocket nut 803, and a protective cutter 804 is installed on the outside of the tensioning sprocket 805 and fixed to the sprocket mounting frame 8026 through the tensioning sprocket nut 803, and a blade tooth 8041 is provided on the protective cutter 804.

[0021] Since the growth of ginger in different fields is different, the ginger in some plots grows vigorously while that in others does not grow vigorously. Even in different positions within the same plot, the vigor of the ginger seedlings varies. Therefore, when harvesting ginger, the number of ginger seedlings entering the transmission system of the ginger harvesting clamping transmission chain is different. In order to ensure that the clamping transmission chain can clamp the ginger seedlings at every moment during work, the clamping mechanism of the transmission system of the clamping transmission chain is required to be able to achieve dynamic tensioning according to the number of ginger seedlings, and to clamp and transmit the ginger seedlings with a constant clamping force during the entire harvesting process.

[0022] The tension support mechanism 8 of the present invention can change the position of the installation on the left fixed plate 1 by moving along the long hole 8014 on the oil cylinder 801, thereby pre-adjusting the tightness of the left clamping chain 3. After adjustment, the tension support mechanism 8 can be fixed to the left fixed plate 1 by tightening the nut 809. The tension support mechanism 8 can change the position of the installation on the right fixed plate 11 by moving along the long hole 8014 on the oil cylinder 801, thereby pre-adjusting the tightness of the right clamping chain 7. After adjustment, the tension support mechanism 8 can be fixed to the right fixed plate 11 by tightening the nut 809. By rotating the adjustment sleeve 815, the pressure of the spring 814 on the plunger 813 can be adjusted, and the position of the plunger 813 in the adjustment valve body 811 can also be adjusted to adjust the pressure of the liquid medium, thereby adjusting the pressure of the liquid medium on the movable support rod 802. The movable support rod 802 is equipped with a tensioning sprocket 805, so the tensioning force and supporting force of the tensioning sprocket 805 on the left clamping chain 3 or the right clamping chain 7 can be adjusted. Therefore, by rotating the adjustment sleeve 815, the tensioning force and supporting force of the left clamping chain 3 or the right clamping chain 7 can be adjusted. When the clamping transmission system is working, the left clamping chain 3 and the right clamping chain 7 are connected to each other. The ginger seedlings are clamped and moved. According to the principle of action and reaction force, the reaction force of the clamping force of the ginger seedlings is transmitted to the tensioning sprocket 805 of the tensioning support mechanism 8 through the chain, and is transmitted to the upper part of the movable support rod 802 through the sprocket mounting frame 8026, and then transmitted to the main plunger 8021 and the auxiliary plunger 8022, and then transmitted to the liquid medium in the cavity 8011 of the cylinder 801 through the main plunger 8021 and the auxiliary plunger 8022. Under the action of the liquid medium, the impact force of the reaction is buffered. At the same time, the reaction force is transmitted to the plunger 1 813 through the liquid medium, and then transmitted to the spring 814. The elastic action of the spring 814 further buffers the impact force. At the same time, when the amount of ginger seedlings entering the left clamping chain 3 and the right clamping chain 7 changes, the tensioning support mechanism 8 can maintain the tensioning force and supporting force of the left clamping chain 3 or the right clamping chain 7 under the action of the spring elastic force of the spring 814 and the pressure of the liquid medium. Therefore, in the clamping transmission of the ginger harvesting process, the tensioning support mechanism 8 can realize dynamic tensioning according to the amount of ginger seedlings, and clamp the ginger seedlings with a constant clamping force to move.

[0023] By rotating the adjusting bolt 825 of the adjusting valve assembly 820, the position of the plunger 823 in the adjusting valve body 821 can be adjusted. After adjusting the position, the locking nut 824 is turned to fix the adjusting bolt 825. The threaded end of the adjusting bolt 825 is semi-spherical, which can reduce the friction between the adjusting bolt 825 and the plunger 823 during the adjustment process. Since the diameter of the adjusting plunger 823 is smaller than the diameter of the plunger 813, the adjusting valve assembly 820 can achieve fine adjustment of the liquid medium pressure in the oil cylinder 801 compared to the adjusting valve assembly 810, thereby achieving fine adjustment of the clamping force of the clamping chain.

[0024] The movable support rod 802 is designed with two plungers, a main plunger 8021 and an auxiliary plunger 8022. When the left clamping chain 3 or the right clamping chain 7 clamps the ginger seedlings and moves, the ginger pieces buried in the soil will generate a downward pulling force on the left clamping chain 3 or the right clamping chain 7. This pulling force is transmitted to the movable support rod 802 through the tensioning sprocket 805. The movable support rod 802 is designed with two plungers, a main plunger 8021 and an auxiliary plunger 8022. This structure can improve the bending stress on the movable support rod 802.

[0025] An O-ring 806 and a shallow groove 8025 are installed in the oil seal groove 8024 of the main plunger 8021, which can prevent the hydraulic medium from leaking between the outer surface 80211 of the main plunger 8021 and the inner surface 80111 of the cavity 8011 of the cylinder 801.

[0026] The protective cutter 804 is installed on the outside of the tensioning sprocket 805 and is on the sprocket mounting frame 8026 through the tensioning sprocket nut 803. The protective cutter 804 has teeth 8041. The protective cutter 804 can prevent the sprocket from being easily penetrated by stems, leaves and other debris. The protective cutter 804 has teeth 8041 that can cut off the stems, leaves and other debris of the ginger seedlings close to the tensioning sprocket 805 to prevent the stems, leaves and other debris of the ginger seedlings from being entangled with the tensioning sprocket 805.

[0027] Finally, it should be noted that the above examples are only a specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the disclosure of the present invention by a person of ordinary skill in the art should be considered as the protection scope of the present invention.

Claims

1. A tensioning support mechanism, comprising an oil cylinder (801), a movable support rod (802), a tensioning sprocket nut (803), a protective cutter (804), a tensioning sprocket (805), an O-ring (806), a bolt (807), a washer (808), a nut (809), an adjustment valve assembly (810), and an adjustment valve assembly (820), wherein the oil cylinder (801) is provided with the adjustment valve assembly (810) and the adjustment valve assembly (820), and a cavity (8011) of the oil cylinder (801) is filled with a liquid medium, characterized in that The adjusting valve assembly (810) comprises an adjusting valve body (811), a sealing ring (812), a plunger (813), a spring (814), and an adjusting sleeve (815). The adjusting valve body (811) is connected to an internal thread (8012) of an oil cylinder (801) via an external thread (8111). A plunger (813) is installed in the adjusting valve body (811). One end of the spring (814) is pressed on the plunger (813). The other end of the spring (814) is placed in a hole of the adjusting sleeve (815). The adjusting sleeve (815) is connected to the adjusting valve body (811) via a thread. 1), by rotating the adjusting sleeve (815), the pressure of the spring (814) on the plunger (813) can be adjusted, and the position of the plunger (813) in the adjusting valve body (811) can also be adjusted to adjust the pressure of the liquid medium, thereby adjusting the pressure of the liquid medium on the movable support rod (802). The movable support rod (802) is equipped with a tensioning sprocket (805), so the tensioning force and supporting force of the tensioning sprocket (805) on the clamping chain can be adjusted. Therefore, by rotating the adjusting sleeve (815), the tensioning force and supporting force of the clamping chain can be adjusted. When the clamping transmission system is working, The clamping chain clamps the clamped object and moves it. According to the principle of action and reaction force, the reaction force of the clamping force clamping the clamped object is transmitted to the tensioning sprocket (805) of the tensioning support mechanism through the chain, and is transmitted to the upper side of the moving support rod (802) through the sprocket mounting frame (8026), and then transmitted to the main plunger (8021) and the auxiliary plunger (8022), and then transmitted to the liquid medium in the cavity (8011) of the oil cylinder (801) through the main plunger (8021) and the auxiliary plunger (8022). Under the action of the liquid medium, the reaction impact force is buffered, and at the same time, the reaction force is transmitted through The liquid medium is transferred to the plunger 1 (813), and then to the spring (814). The elastic effect of the spring (814) further buffers the impact force. At the same time, when the amount of clamped objects entering the left clamping chain (3) and the right clamping chain (7) changes, the tensioning force and supporting force of the left clamping chain (3) or the right clamping chain (7) can be maintained under the action of the spring force of the spring (814) and the pressure of the liquid medium. In the clamping transmission of the clamping chain, the tensioning support mechanism (8) can automatically realize dynamic tensioning of the clamping chain according to the amount of clamped objects, and clamp the objects with a constant clamping force.The second adjusting valve assembly (820) comprises a second adjusting valve body (821), a second sealing ring (822), a second plunger (823), a locking nut (824), and an adjusting bolt (825). The diameter of the second adjusting plunger (823) is smaller than the diameter of the first plunger (813). The second adjusting valve body (821) is connected to the second internal thread (8013) of the oil cylinder (801) via a second external thread (8211). The second plunger (823) is installed in the second adjusting valve body (821). The adjusting bolt (825) is installed on the second adjusting valve body (821) via a thread. The threaded end of the adjusting bolt (825) is semi-spherical. The semi-spherical end of the adjusting bolt (825) is pressed on the second plunger (823), which can reduce the friction between the adjusting bolt (825) and the second plunger (823) during the adjustment process. A locking nut (824) is installed on the adjusting bolt (825). The position of the second plunger (823) in the adjusting valve body (821) can be adjusted by rotating the adjusting bolt (825). The position of the second plunger (823) in the adjusting valve body (821) can be adjusted by rotating the adjusting bolt (825) of the adjusting valve assembly (820). After the position is adjusted, the locking nut (824) is rotated to fix the adjusting bolt (825). Since the diameter of the second adjustment plunger (823) is smaller than the diameter of the first adjustment plunger (813), the second adjustment valve assembly (820) can achieve fine adjustment of the pressure of the liquid medium in the oil cylinder (801) compared with the first adjustment valve assembly (810), thereby achieving fine adjustment of the clamping force of the clamping chain; the oil cylinder (801) includes a cavity (8011), an internal thread one (8012), an internal thread two (8013), and a long hole (8014); the movable support rod (802) includes a main plunger (8021), an auxiliary plunger (8022), and a sprocket mounting frame (8026); the main plunger (8021) is provided with an oil seal groove (80 24) and a shallow groove (8025), a through hole (8023) is provided on the auxiliary plunger (8022), the movable support rod (802) is installed in the cavity (8011) of the oil cylinder (801), the outer surface 1 (80211) of the main plunger (8021) and the inner surface (80111) of the cavity (8011) of the oil cylinder (801) are transitionally matched, the outer surface 2 (80221) of the auxiliary plunger (8022) and the inner surface (80111) of the cavity (8011) of the oil cylinder (801) are transitionally matched, and an O-type sealing ring (806) is installed in the oil seal groove (8024) of the main plunger (8021). ; 2. A tensioning support mechanism according to claim 1, characterized in that: A sprocket mounting frame (8026) is provided on the movable support rod (802), a tensioning sprocket (805) is installed on the sprocket mounting frame (8026) through a tensioning sprocket nut (803), a protective cutter (804) is installed outside the tensioning sprocket (805) and is fixed on the sprocket mounting frame (8026) through the tensioning sprocket nut (803), and a cutter tooth (8041) is provided on the protective cutter (804).

3. A tensioning support mechanism according to claim 1, characterized in that The protective cutter (804) is installed outside the tensioning sprocket (805), and the protective cutter (804) is provided with cutter teeth (8041). The protective cutter (804) can prevent the sprocket from being easily penetrated by foreign objects, and the protective cutter (804) is provided with cutter teeth (8041) which can cut off foreign objects close to the tensioning sprocket (805) to prevent the foreign objects from being entangled with the tensioning sprocket (805).

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