Adjustable guide rail and rubber tapping machine

Abstract

The utility model provides an adjustable guide rail and a rubber tapping machine, and the adjustable guide rail comprises a guide rail body which is provided with an annular mounting space and is provided with a first end and a second end; the buffer tightening device is connected between the first end and the second end and is arranged at the annular notch of the guide rail body; the multiple supporting devices are arranged on the inner ring wall of the guide rail body and abut against a target installation object. And when the adjustable guide rail is subjected to a force of pressing the target mounting object from inside to outside, the buffer tightening device is lengthened, so that the adjustable guide rail adapts to the caliber of the target mounting object. The technical problems that an existing rubber tree guide rail surrounds a rubber tree, due to the fact that rubber tapping equipment is installed on the rubber tree for a long time, the length of the rubber tree growth guide rail and a binding belt cannot be adaptively adjusted, binding is too tight, and tree growth is affected are solved. In addition, the guide rail cannot be adjusted when attached to the trunk to adapt to the outline of the rubber tree.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically, to an adjustable guide rail and a rubber tapping machine. Background Technology

[0002] Natural rubber is an important industrial raw material. It is produced by tapping the outer bark and bast bark of rubber trees to allow the latex to flow out and be collected in rubber cups, which are then further processed. The increasing use of tapping equipment is becoming a major trend in current rubber tapping technology. Rubber tappers are used to perform tapping operations around rubber trees and are supported by guide rails to facilitate the movement of related equipment.

[0003] However, the relevant technology has at least one of the following problems: the existing rubber tree guide rails surround the rubber tree, and because the rubber tapping equipment takes a long time to install on the rubber tree, the length of the guide rails and binding straps cannot be adjusted adaptively as the rubber tree grows, resulting in excessive binding that affects the growth of the tree; in addition, the guide rails cannot be adjusted when attached to the trunk to adapt to the outline of the rubber tree. Utility Model Content

[0004] The technical problem solved by this utility model is that existing rubber tree guide rails surround rubber trees. Because the rubber tapping equipment takes a long time to install and work on the rubber tree, the length of the guide rails and binding straps cannot be adjusted adaptively as the rubber tree grows, resulting in excessive binding that affects the growth of the tree. In addition, the guide rails cannot be adjusted when attached to the trunk to fit the outline of the rubber tree.

[0005] To solve the above problems, this utility model provides an adjustable guide rail, which includes: a guide rail body having an annular mounting space, the guide rail body being mounted on a target object through the annular mounting space, the guide rail body having a first end and a second end; a buffer tightening device connected between the first end and the second end, the buffer tightening device being located at the annular notch of the guide rail body; and a support device, a plurality of support devices being located on the inner annular wall of the guide rail body and abutting against the target object; wherein, when the adjustable guide rail is subjected to a force from the inside out pressing on the target object, the buffer tightening device elongates to adapt the adjustable guide rail to the diameter of the target object.

[0006] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: through the synergistic effect of the buffer tightening device and the support device, the guide rail body can dynamically adapt to changes in the diameter of the rubber tree and the irregular shape of the rubber tree, solving the problem of loose installation or stress concentration caused by the growth of the rubber tree or changes in the environment, and improving the long-term stability of the rubber tapping machine.

[0007] In one embodiment of this utility model, the buffer tightening device includes: an active adjustment part disposed on a first end; and a passive adjustment part disposed on a second end; wherein a strap connects the active adjustment part and the passive adjustment part.

[0008] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: By separating the active adjustment part and the passive adjustment part, and connecting the active adjustment part and the passive adjustment part with the strap, the length of the buffer tightening device can be adjusted in two ways, making the adjustable range of the circumference of the adjustable guide rail more flexible. At the same time, the flexibility of the strap reduces the risk of damage to the rubber tree bark.

[0009] In one embodiment of this utility model, the passive adjustment part includes a telescopic spring, one end of which is connected to a second end, and the other end of which is connected to a strap; wherein, when the diameter of the target installation object increases, the telescopic spring deforms and stretches to adapt the adjustable guide rail to the diameter of the target installation object.

[0010] Compared with existing technologies, the technical effects achieved by this solution are as follows: the automatic elastic deformation of the spring allows the buffer tightening device to automatically adjust to changes in the outer circumference of the rubber tree trunk without manual intervention, reducing the need for frequent manual adjustments. Furthermore, the buffering effect of the spring disperses the local pressure of the guide rail on the trunk, protecting the bark of the rubber tree.

[0011] In one embodiment of this utility model, the passive adjustment part further includes a telescopic cavity, and a telescopic spring is disposed in the telescopic cavity; wherein, when the telescopic spring deforms, the inner wall of the telescopic cavity cooperates with the telescopic spring so that the telescopic spring remains connected to the passive adjustment part.

[0012] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the telescopic cavity provides physical limits for the spring, preventing the spring from being overstretched or compressed and thus failing, while also constraining the direction of spring deformation, ensuring that the spring is always reliably connected to the passive adjustment part, and improving the durability of the device.

[0013] In one embodiment of this utility model, the active adjustment unit includes: a first rotating shaft rotatably connected to a first end, one end of a strap wrapped around the first rotating shaft, and a one-way ratchet provided on the first rotating shaft; a wrench connected to the first rotating shaft; wherein, when the wrench is turned along the first direction, the wrench drives the first rotating shaft to rotate, and the effective binding length of the strap on the target installation object changes, so that the adjustable guide rail adapts to the diameter of the target installation object.

[0014] Compared with existing technologies, the technical effects achieved by this solution are as follows: through the linkage design of the one-way ratchet and the rotating shaft, the strap can be tightened and locked in one direction. The operator can adjust the guide rail circumference by pulling the wrench in one direction, simplifying the operation steps and preventing accidental loosening.

[0015] In one embodiment of this utility model, the active adjustment unit further includes a check structure that engages with a one-way ratchet to allow the first rotating shaft to enter a one-way rotation state; the check structure is connected to the first end by a spring; wherein, when the first rotating shaft enters the one-way rotation state, the check structure abuts against the ratchet teeth of the one-way ratchet; when the check structure moves away from the one-way ratchet, the check structure disengages from the one-way ratchet, and the first rotating shaft enters a two-way rotation state.

[0016] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by designing a check structure, the active adjustment part cannot be shortened without human intervention, thus preventing the adjustable guide rail from being too loose; by using a spring to install the check structure on the first end, the check structure and the one-way ratchet can perform both disengagement and engagement actions, allowing the user to actively adjust the circumference of the guide rail, balancing adjustment efficiency and safety.

[0017] In one embodiment of this utility model, the wrench is provided with a retractable unlocking member; the first end is provided with a locking member that cooperates with the unlocking member so that the active adjustment part enters the locked state; wherein, when the active adjustment part enters the locked state, the unlocking member and the locking member engage; when the unlocking member moves away from the locking member, the unlocking member and the locking member disengage, and the active adjustment part enters the adjustment state.

[0018] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: through the mechanical interlocking mechanism of the unlocking and locking components, the active adjustment unit cannot adjust the circumference of the adjustable guide rail without human intervention, thereby improving the fault tolerance of the adjustable guide rail.

[0019] In one embodiment of this utility model, the support device includes: a base, which is disposed on the annular wall of the guide rail body and has a transverse groove; a top support member, which is connected to the base to allow the top support member to move along the radial direction of the adjustable guide rail, and has an oblique groove; and a rotating rod, which is rotatably connected to the base and extends into both the transverse groove and the oblique groove; wherein, when the rotating rod rotates along a second direction, the top support member moves away from the base; and when the rotating rod rotates along a third direction opposite to the second direction, the top support member moves closer to the base.

[0020] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: through the combined design of the transverse groove and the oblique groove, the top support can be adjusted to move back and forth along the radial direction of the adjustable guide rail simply by turning the rotating rod, so that the adjustable guide rail can adapt to the shape and contour of the rubber tree.

[0021] In one embodiment of this utility model, the rotating rod is provided with a second rotating shaft rotatably connected to the base, and a first one-way surface gear is provided on the second rotating shaft; the base is provided with a second one-way surface gear that cooperates with the first one-way surface gear, so that when the rotating rod rotates in a third direction, the first one-way surface gear and the second one-way surface gear abut against each other; wherein, when the rotating rod moves away from the base, the first one-way surface gear and the second one-way surface gear disengage.

[0022] Compared with existing technologies, the technical effects achieved by this solution are as follows: Through the cooperation of the first and second one-way gears, when the adjustable guide rail is installed on the rubber tree, the top support is subjected to pressure, the rotating rod cannot move away from the base, and the first and second one-way gears cannot disengage. This ensures that the rotating rod can only rotate in one direction, and the top support can only move away from the base, thus guaranteeing that the installation of the adjustable guide rail will not loosen. On the other hand, when the user removes the adjustable guide rail, the first and second one-way gears can disengage, allowing the top support to move towards the base.

[0023] On the other hand, this utility model also provides a rubber tapping machine, including an adjustable guide rail as in any of the above examples.

[0024] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: it can achieve the technical effects corresponding to any of the above examples, which will not be elaborated here.

[0025] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0026] (1) Through the synergistic effect of the buffer tightening device and the support device, the guide rail body can dynamically adapt to the changes in the perimeter of the rubber tree and the irregular shape of the rubber tree, which solves the problem of loose installation or stress concentration caused by the growth of the rubber tree or changes in the environment of the traditional guide rail, and improves the stability of the rubber tapping machine in long-term operation.

[0027] (2) By separating the active adjustment part and the passive adjustment part, and connecting the active adjustment part and the passive adjustment part with the strap, the length of the buffer tightening device can be adjusted in two ways, making the adjustable range of the circumference of the adjustable guide rail more flexible, while using the flexible characteristics of the strap to reduce the risk of damage to the rubber tree bark.

[0028] (3) By utilizing the characteristic of springs to automatically deform elastically, the buffer tightening device can automatically adjust to the changes in the outer perimeter of the rubber tree trunk without manual intervention, reducing the need for frequent manual adjustments. Furthermore, the buffering effect of the springs disperses the local pressure of the guide rail on the trunk, protecting the bark of the rubber tree. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of an adjustable guide rail provided for an embodiment of this utility model;

[0031] Figure 2 for Figure 1 A schematic diagram of the first part of the active adjustment section of the adjustable guide rail;

[0032] Figure 3 for Figure 1 A schematic diagram of the second part of the active adjustment section of the adjustable guide rail;

[0033] Figure 4 for Figure 1 A schematic diagram of the passive adjustment section of the adjustable guide rail;

[0034] Figure 5 for Figure 1 A schematic diagram of the first state of the support device for the adjustable guide rail;

[0035] Figure 6 for Figure 1 A schematic diagram of the second state of the support device for the adjustable guide rail;

[0036] Figure 7 for Figure 1 A cross-sectional schematic diagram of the support device for the adjustable guide rail.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Adjustable guide rail; 10. Guide rail body; 11. First end; 12. Second end; 13. First slide groove; 14. Locking element; 15. First limiting groove; 16. Annular mounting space; 20. Strap; 100. Active adjustment part; 110. First rotating shaft; 111. One-way ratchet; 112. Ratchet tooth; 120. Wrench; 121. Unlocking element; 122. Second slide groove; 123. Lifting element; 130. Check valve structure; 200. Passive adjustment part; 210. Telescopic spring; 220. Telescopic cavity; 300. Support device; 310. Base; 311. Transverse groove; 312. Second one-way surface gear; 320. Top support; 321. Angled groove; 330. Rotating rod; 331. Second rotating shaft; 332. First one-way surface gear. Detailed Implementation

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0040] See Figures 1 to 7 This utility model provides an adjustable guide rail 1, which includes: a guide rail body 10, the guide rail body 10 having an annular mounting space 16, the guide rail body 10 being mounted on a target object through the annular mounting space 16, the guide rail body 10 having a first end 11 and a second end 12; a buffer tightening device, the buffer tightening device being connected between the first end 11 and the second end 12, the buffer tightening device being located at the annular notch of the guide rail body 10; and a support device 300, a plurality of support devices 300 being located on the inner annular wall of the guide rail body 10 and abutting against the target object; wherein, when the adjustable guide rail 1 is subjected to a force from the inside out pressing by the target object, the buffer tightening device is stretched to adapt the adjustable guide rail 1 to the diameter of the target object.

[0041] Through the synergistic effect of the buffer tightening device and the support device 300, the guide rail body 10 can dynamically adapt to changes in the diameter of the rubber tree and the irregular shape of the rubber tree, solving the problem of loose installation or stress concentration caused by the growth of the rubber tree or changes in the environment, and improving the long-term stability of the rubber tapping machine.

[0042] Preferably, in this embodiment of the invention, the target installation object can be a rubber tree or other trees.

[0043] Preferably, the support devices 300 are distributed along the inner sidewall of the adjustable guide rail 1, and the number of support devices 300 depends on the complexity of the resin surface.

[0044] In this embodiment, the support devices 300 can be evenly distributed or irregularly distributed. For example, when the surface of the resin tree is uneven, the density of the support devices 300 can be increased, and the density can be reduced in flat areas. Furthermore, the support devices 300 and the adjustable guide rail 1 are detachably distributed to allow for adjustments for different resin trees.

[0045] Preferably, the buffer tightening device protrudes from the inner wall of the guide rail to facilitate cooperation with the support device 300.

[0046] Furthermore, the buffer tightening device includes an active adjustment part 100 and a passive adjustment part 200. The active adjustment part 100 is disposed on the first end 11; the passive adjustment part 200 is disposed on the second end 12; wherein, a strap 20 is connected between the active adjustment part 100 and the passive adjustment part 200, and the two ends of the strap 20 are respectively connected to the active adjustment part 100 and the passive adjustment part 200.

[0047] By separating the active adjustment unit 100 and the passive adjustment unit 200, and connecting the active adjustment unit 100 and the passive adjustment unit 200 with the strap 20, the length of the buffer tightening device can be adjusted in two ways, making the adjustable range of the circumference of the adjustable guide rail 1 more flexible. At the same time, the flexibility of the strap 20 reduces the risk of damage to the rubber tree bark.

[0048] Preferably, the active adjustment part 100 and the passive adjustment part 200 are relatively flat on the inner side near the rubber tree so that they can be installed on the rubber tree.

[0049] Furthermore, the strap 20 is made of a flexible, bendable material so that it can be wrapped around the first pivot 110.

[0050] Preferably, the passive adjustment unit 200 includes a telescopic spring 210, one end of which is connected to the second end 12, and the other end of which is connected to the strap 20; wherein, when the diameter of the target installation changes, the telescopic spring 210 deforms and stretches to adapt the adjustable guide rail 1 to the diameter of the target installation.

[0051] The spring's ability to automatically deform elastically allows the buffer tightening device to automatically adjust to changes in the outer circumference of the rubber tree trunk without manual intervention, reducing the need for frequent manual adjustments. The spring's buffering effect also disperses the local pressure on the trunk from the guide rail, protecting the rubber tree's bark.

[0052] Preferably, the spring and the strap 20 are fixedly connected, and the connection point is not limited; for example, the strap 20 can be connected to the end of the spring near the first end 11, and the length of the adjustable guide rail 1 increases when the spring is stretched; the strap 20 can be connected to the end of the spring away from the first end 11, and the length of the adjustable guide rail 1 increases when the spring is compressed.

[0053] The telescopic cavity 220 provides a physical limit for the spring, preventing it from being overstretched or compressed and causing failure. At the same time, it constrains the direction of spring deformation, ensuring that the spring is always reliably connected to the passive adjustment part 200, thus improving the durability of the device.

[0054] For example, the passive adjustment unit 200 also includes a telescopic cavity 220, and a telescopic spring 210 is disposed in the telescopic cavity 220; wherein, when the telescopic spring 210 deforms, the inner wall of the telescopic cavity 220 cooperates with the telescopic spring 210 so that the telescopic spring 210 remains connected to the passive adjustment unit 200.

[0055] In addition, the active adjustment unit 100 includes a first rotating shaft 110 and a wrench 120. The first rotating shaft 110 is rotatably connected to a first end 11. One end of the strap 20 is wrapped around the first rotating shaft 110. The first rotating shaft 110 is provided with a one-way ratchet 111. The wrench 120 is connected to the first rotating shaft 110. When the wrench 120 is turned in the first direction, the wrench 120 drives the first rotating shaft 110 to rotate, and the effective binding length of the strap 20 on the target installation object changes, so that the adjustable guide rail 1 adapts to the diameter of the target installation object.

[0056] The linkage design between the one-way ratchet 111 and the rotating shaft enables one-way tightening and locking of the strap 20. The operator can adjust the guide rail circumference by pulling the wrench 120 in one direction, simplifying the operation and preventing accidental loosening.

[0057] Preferably, the direction of deviation of the helical teeth of the one-way ratchet 111 is not limited, and the wrench 120 can be turned clockwise to drive the first rotating shaft 110, or it can be turned counterclockwise to drive the first rotating shaft 110.

[0058] Preferably, the active adjustment unit 100 further includes a check structure 130 that engages with the one-way ratchet 111 to allow the first rotating shaft 110 to enter a one-way rotation state; the check structure 130 is connected to the first end 11 by a spring, and the check structure 130 is installed in the second limiting groove provided in the first end 11; wherein, when the first rotating shaft 110 enters the one-way rotation state, the check structure 130 abuts against the ratchet teeth 112 of the one-way ratchet 111; when the check structure 130 moves away from the one-way ratchet 111, the check structure 130 disengages from the one-way ratchet 111, and the first rotating shaft 110 enters a two-way rotation state.

[0059] By designing a check structure 130, the active adjustment section 100 cannot be shortened without human intervention, thus preventing the adjustable guide rail 1 from being installed too loosely. The check structure 130 is installed on the first end 11 by a spring. The check structure 130 and the one-way ratchet 111 can perform both disengagement and engagement actions, allowing the user to actively adjust the circumference of the guide rail, balancing adjustment efficiency and safety.

[0060] Preferably, the check structure 130 is connected to the first end 11 via a spring. The check structure 130 is disposed in the first groove 13 of the first end 11, and the check structure 130 engages with the ratchet teeth 112 of the one-way ratchet 111 in the normal state. When it is necessary to adjust the length of the strap 20, the check structure 130 needs to be manually moved away from the rotating shaft.

[0061] Specifically, the wrench 120 is provided with a retractable unlocking member 121, which is used to cooperate with the one-way ratchet 111 so that the wrench 120 drives the first rotating shaft 110; the first end 11 is provided with a locking member 14 that cooperates with the unlocking member 121 so that the active adjustment part 100 enters the locked state; wherein, when the active adjustment part 100 enters the locked state, the unlocking member 121 and the locking member 14 are engaged; when the unlocking member 121 moves away from the locking member 14, the unlocking member 121 and the locking member 14 are disengaged, and the active adjustment part 100 enters the adjustment state.

[0062] Through the mechanical interlocking mechanism between the unlocking component 121 and the locking component 14, the active adjustment unit 100 cannot adjust the circumference of the adjustable guide rail 1 without human intervention, thereby improving the fault tolerance of the adjustable guide rail 1.

[0063] Preferably, the unlocking member 121 is connected to the wrench 120 by a spring, so that the spring automatically extends into the one-way ratchet 111 and the locking member 14; the unlocking member 121 is disposed in the second slide groove 122 of the wrench 120, so that the cooperation between the wrench 120 and the unlocking member 121 is more secure; the unlocking member 121 is provided with a lifting member 123 for assisting in the operation of the unlocking member 121, so that the operator can perform the operation.

[0064] Preferably, the locking member 14 is provided with a first limiting groove 15 that cooperates with the unlocking member 121 to restrict the movement of the unlocking key.

[0065] Preferably, when the active adjustment unit 100 is in the adjustment state, the wrench 120 is pulled in the first direction, and the wrench 120 drives the unlocking member 121. The unlocking member 121 abuts against the ratchet teeth 112 of the one-way ratchet 111, thereby driving the first rotating shaft 110 to rotate. If the wrench 120 has insufficient remaining turning space, the wrench 120 is pulled in the opposite direction to the first direction, and the unlocking member 121 slides over the inclined surface of the ratchet teeth 112. At this time, the check structure 130 abuts against the ratchet teeth 112, so that the first rotating shaft 110 does not move, and the wrench 120 can perform the next round of turning.

[0066] Preferably, when the unlocking member 121 and the locking member 14 are both moved away from the first rotating shaft 110, the first rotating shaft 110 can rotate freely in both directions, thereby allowing for more flexible adjustment of the length of the strap 20.

[0067] Furthermore, the support device 300 includes a base 310, a top support 320, and a rotating rod 330. The base 310 is disposed on the inner side wall of the guide rail body 10, and the base 310 is provided with a transverse groove 311; the top support 320 is connected to the base 310 so that the top support 320 can move in the radial direction of the adjustable guide rail 1, and the top support 320 is provided with an oblique groove 321; the rotating rod 330 is rotatably connected to the base 310, and the rotating rod 330 extends into both the transverse groove 311 and the oblique groove 321; wherein, when the rotating rod 330 rotates in the second direction, the top support 320 moves away from the base 310; when the rotating rod 330 rotates in the third direction opposite to the second direction, the top support 320 moves towards the base 310.

[0068] Through the combined design of the transverse groove 311 and the oblique groove 321, the top support 320 can be adjusted to move back and forth along the radial direction of the adjustable guide rail 1 by simply turning the rotating rod 330, so that the adjustable guide rail 1 can adapt to the shape and contour of the rubber tree.

[0069] Preferably, the base 310 is detachably mounted on the guide rail body 10.

[0070] Preferably, in this embodiment of the application, the top support 320 is sleeved on the base 310, and the top support 320 cannot rotate relative to the base 310.

[0071] In some implementations, the top support 320 can be internally mounted on the base 310. The top support 320 can rotate relative to the base 310 as it moves in the radial direction of the adjustable guide rail 1, but the rotation amplitude cannot exceed the amplitude of the inclined groove 321.

[0072] Preferably, the rotating rod 330 is provided with a second rotating shaft 331 rotatably connected to the base 310, and a first one-way surface gear 332 is provided on the second rotating shaft 331; the base 310 is provided with a second one-way surface gear 312 that cooperates with the first one-way surface gear 332, so that when the rotating rod 330 rotates in a third direction, the first one-way surface gear 332 and the second one-way surface gear 312 abut against each other; wherein, when the rotating rod 330 moves away from the base 310, the first one-way surface gear 332 and the second one-way surface gear 312 disengage.

[0073] Through the cooperation of the first one-way surface gear 332 and the second one-way surface gear 312, when the adjustable guide rail 1 is installed on the glue tree, the top support 320 is under pressure, the rotating rod 330 cannot move away from the base 310, and the first one-way surface gear 332 and the second one-way surface gear 312 cannot disengage. As a result, the rotating rod 330 can only rotate in one direction, and the top support 320 can only move away from the base 310, ensuring that the installation of the adjustable guide rail 1 will not be loose. On the other hand, when the user removes the adjustable guide rail 1, the first one-way surface gear 332 and the second one-way surface gear 312 can disengage, and the adjustable top support 320 can move towards the base 310.

[0074] Preferably, the width of the transverse groove 311 is greater than the diameter of the rotating rod 330, so that the first one-way surface gear 332 can move away from the second one-way surface gear 312.

[0075] On the other hand, the present invention also provides a rubber tapping machine, including an adjustable guide rail 1 as in any of the above examples.

[0076] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An adjustable guide rail, characterized in that, the adjustable guide rail comprises: a guide rail body (10) having an annular mounting space (16), the guide rail body (10) being mounted on a target mounting object through the annular mounting space (16), the guide rail body (10) being provided with a first end (11) and a second end (12); a buffer tightening device connected between the first end (11) and the second end (12), the buffer tightening device being arranged at a notch of the guide rail body (10); a plurality of support devices (300) arranged on an inner annular wall of the guide rail body (10) and abutting against the target mounting object; wherein when the adjustable guide rail is pressed outward by the target mounting object, the buffer tightening device is elongated to adapt the caliber of the target mounting object.

2. The adjustable guide rail according to claim 1, characterized in that, the buffer tightening device comprises: an active adjusting part (100) arranged on the first end (11); a passive adjusting part (200) arranged on the second end (12); wherein a band (20) is connected between the active adjusting part (100) and the passive adjusting part (200).

3. The adjustable guide rail according to claim 2, characterized in that, the passive adjusting part (200) comprises a telescopic spring (210), one end of the telescopic spring (210) being connected to the second end (12), the other end of the telescopic spring (210) being connected to the band (20); wherein when the caliber of the target mounting object becomes larger, the telescopic spring (210) is deformed and elongated to adapt the caliber of the target mounting object.

4. The adjustable guide rail according to claim 3, characterized in that, the passive adjusting part (200) further comprises a telescopic cavity (220), the telescopic spring (210) being arranged in the telescopic cavity (220); wherein when the telescopic spring (210) is deformed, the inner wall of the telescopic cavity (220) cooperates with the telescopic spring (210) to keep the telescopic spring (210) connected to the passive adjusting part (200).

5. The adjustable guide rail according to claim 2, characterized in that, the active adjusting part (100) comprises: a first rotating shaft (110) rotatably connected to the first end (11), one end of the band (20) being wound around the first rotating shaft (110), the first rotating shaft (110) being provided with a one-way ratchet (111); a wrench (120) connected to the first rotating shaft (110). When the spanner (120) is turned in the first direction, the spanner (120) drives the first rotating shaft (110) to rotate, and the effective binding length of the binding belt (20) on the target installation object changes, so that the adjustable guide rail adapts to the caliber of the target installation object.

6. The adjustable guide rail according to claim 5, wherein, the active adjustment part (100) further comprises a check structure (130) matched with the one-way ratchet wheel (111), so that the first rotating shaft (110) enters a one-way rotating state; the check structure (130) is connected with the first end (11) by a spring; when the first rotating shaft (110) enters the one-way rotating state, the check structure (130) and the ratchet teeth (112) of the one-way ratchet wheel (111) abut against each other; when the check structure (130) moves away from the one-way ratchet wheel (111), the check structure (130) is disengaged from the one-way ratchet wheel (111), and the first rotating shaft (110) enters a two-way rotating state.

7. The adjustable guide rail according to claim 5, wherein, the spanner (120) is provided with a retractable unlocking piece (121), which is used to match with the one-way ratchet wheel (111) to drive the first rotating shaft (110) by the spanner (120); the first end (11) is provided with a locking piece (14) matched with the unlocking piece (121), so that the active adjustment part (100) enters a locked state; when the active adjustment part (100) enters the locked state, the unlocking piece (121) is engaged with the locking piece (14); when the unlocking piece (121) moves away from the locking piece (14), the unlocking piece (121) is disengaged from the locking piece (14), and the active adjustment part (100) enters an adjustment state.

8. The adjustable guide rail according to claim 1, wherein, the support device (300) comprises: a base (310) provided on the inner side wall of the guide rail body (10), and the base (310) is provided with a transverse groove (311); a top support piece (320) matched and connected with the base (310), so that the top support piece (320) moves in the radial direction of the adjustable guide rail, and the top support piece (320) is provided with an inclined groove (321); a rotating rod (330) rotationally connected with the base (310), and the rotating rod (330) extends into the transverse groove (311) and the inclined groove (321) at the same time; when the rotating rod (330) rotates in a second direction, the top support piece (320) moves away from the base (310); when the rotating rod (330) rotates in a third direction opposite to the second direction, the top support piece (320) moves towards the base (310).

9. The adjustable guide rail according to claim 8, characterized in that, the rotating rod (330) is provided with a second rotating shaft (331) rotatably connected with the base (310), and the second rotating shaft (331) is provided with a first one-way face gear (332); the base (310) is provided with a second one-way face gear (312) matched with the first one-way face gear (332), so that the first one-way face gear (332) and the second one-way face gear (312) abut against each other when the rotating rod (330) rotates in a third direction; wherein, when the rotating rod (330) moves away from the base (310), the first one-way face gear (332) and the second one-way face gear (312) are disengaged.

10. A rubber tapping machine, characterized in that, the rubber tapping machine comprises the adjustable guide rail according to any one of claims 1-9.

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