Retaining device and ditching and banking machine
By designing a backstop device on the trenching and soiling machine, and using a limiter and a return spring to limit the depth of the tool entering the soil and support the machine, the problem of machine recoil is solved and safety and stability are improved.
Patent Information
- Application Number
- CN202422885679.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing trenching and earthing machines are prone to recoil when encountering hard objects, causing the machine to move backward, posing a safety hazard.
A backstop device is designed, including a first mounting rod and a backstop rod. Through the cooperation of a limit part, a return spring and a support wheel, it limits the depth of the cutter into the soil and supports the machine, reduces the starting torque, and quickly returns to its position when a hard object touches it, reducing thrust and increasing resistance to prevent the machine from backing up.
It effectively reduces or avoids the recoil phenomenon of the trenching and earthing machine, improves operational safety and stability, and ensures that the machine does not move backward when it touches hard objects.
Smart Images
Figure CN223391657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, in particular to a retreat-stopping device and a trenching and earth-raising machine. Background Art
[0002] To promote root development and drainage, trenching and soiling are necessary during crop planting and growth. Most existing trenching and soiling machines have cutters that rotate in the reverse direction (generating a force that pushes the machine backward when subjected to force), while the travel wheels rotate forward to propel the machine forward. Due to the complex nature of the soil, the backward thrust of the cutters often exceeds the forward thrust of the travel wheels. In this case, the machine will rapidly reverse (a phenomenon known as kickback), creating a safety hazard and frequently resulting in injuries. Utility Model Content
[0003] 1. Technical Problems Solved
[0004] In view of the deficiencies in the prior art, the utility model proposes a back-off device and a trenching and hilling machine. The cooperation between the first mounting rod and the back-off rod inserted into the soil can effectively reduce or avoid the recoil of the trenching and hilling machine when encountering hard objects, thereby making it safer.
[0005] 2. Specific technical solutions
[0006] A retreat-stop device includes a first mounting rod, the bottom of the first mounting rod is rotatably connected to the retreat-stop rod, and the upper part of the front end of the retreat-stop rod extends upward and folds over to form a limiting portion; when stopping retreat, the limiting portion cooperates with the bottom of the first mounting rod; a reset spring is provided on the limiting portion, and the other end of the reset spring is fixedly provided on the first mounting rod.
[0007] Implementation principle and working principle:
[0008] In this solution, when the trencher is started, the stop bar extends, limiting the depth of the cutter's entry into the soil or keeping it suspended, reducing or eliminating the torque at start-up and preventing the machine from backlashing. As the trencher moves forward, the stop bar rotates backward, allowing the cutter to enter the soil slowly and evenly, reducing the start-up impact. In addition, when the tool touches a hard object during the startup process or operation, the thrust of the tool rotation on the machine body is greater than the thrust of the walking shaft (wheel) on the machine body, and the machine will retreat. The anti-return rod quickly returns to its original position and straightens under the action of the reset spring force and the friction with the ground, causing the tool to reduce the working depth upward or leave the ground, thereby reducing the thrust of the tool on the machine and increasing the resistance to retreat. Under this dual action, the machine can prevent retreat; when the trenching and hilling machine is working forward, the anti-return rod will rotate backward, and the support wheel will touch the ground in the direction of travel to limit the working depth and avoid affecting the forward movement of the trenching and hilling machine. The setting of the reset spring can make the anti-return rod always maintain a certain angle, and thus can always cooperate with the soil to produce an anti-retreat effect.
[0009] Preferably: a second mounting rod is provided on the limiting portion, and there are two return springs, one at each end of the second mounting rod; the other end of the return spring is provided on both sides of the first mounting rod in the horizontal direction; the beneficial effect of this preferred embodiment is that the return springs on both sides can further enhance the return effect of the anti-return rod, so that the anti-return rod can cooperate with the soil at any time, and at the same time the action of the two return springs makes the restoring force more balanced and the stability better.
[0010] Preferably, a mounting shaft is provided at the bottom of the first mounting rod, and both ends of the mounting shaft are rotatably connected to support wheels respectively; the beneficial effect of this preferred embodiment is that the setting of the support wheels can help the trenching and soiling machine to move forward when trenching, and at the same time can also support the trenching and soiling machine, making it more operable and more stable.
[0011] Preferably: the rear end of the anti-retreat rod is provided with a reinforcing rib; the width of the anti-retreat rod gradually increases from the front end to the rear end; the beneficial effect of this preference is that, on the one hand, the strength of the anti-retreat rod can be improved, and on the other hand, the width setting of the anti-retreat rod can not only not affect the forward movement of the trenching and hilling machine, but also improve its anti-retreat effect.
[0012] Preferably: a limiting block is fixedly provided at the bottom of the first mounting rod, and the rear side of the upper end of the anti-retreat rod is rotatably connected to the front end of the limiting block; when stopping, the limiting part abuts against the front end or upper end of the anti-retreat rod; the beneficial effect of this preferred embodiment is that the cooperation between the limiting part and the front end and upper end of the limiting block can further realize the rotation limit of the anti-retreat rod, and can also improve the limiting effect when the edge of the limiting block is worn.
[0013] A retreat-stopping trenching and hilling machine is equipped with the above-mentioned retreat-stopping device and also includes a frame arranged along the travel direction of the trenching and hilling machine. The front end of the frame is provided with a mounting portion, and the first mounting rod is fixedly connected to the mounting portion.
[0014] Preferably, the mounting portion is further used to adjust the mounting height of the first mounting rod, or the length of the first mounting rod is adjustable; the advantageous effect of this preferred embodiment is that the mounting height of the first mounting rod is adjustable, which can be adapted to ditching requirements of different depths and has better versatility.
[0015] Preferably, the mounting portion includes a limiting sleeve, which is fixedly arranged at the front end of the frame, and a limiting hole is provided on the limiting sleeve, and a plurality of mounting holes that match the limiting holes are provided at intervals on the first mounting rod; the beneficial effect of this preferred embodiment is that the limiting holes and the selection of different mounting holes are used as a structure for adjusting the length of the first mounting rod, and can be adjusted by means of bolts or positioning pins, which is simple and convenient.
[0016] The beneficial effects of the utility model are:
[0017] In this solution, the cooperation of the anti-recoil rod and the limit block arranged at the front end of the frame can reduce or avoid the backlash of the trenching and hilling machine when the tool touches a hard object, thereby improving the safety factor of the operator when operating the trenching and hilling machine; when the trenching and hilling machine moves forward, the anti-recoil rod will rotate backward, thereby avoiding affecting the forward movement of the trenching and hilling machine. The setting of the reset spring can make the anti-recoil rod always maintain a certain angle, so that it can always cooperate with the soil to produce a anti-recoil effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the anti-retraction device of the utility model in the anti-retraction state.
[0019] Figure 2 This is a structural diagram of the utility model's anti-retreat device in the operating and walking state.
[0020] Figure 3 It is a schematic front view of the trenching and earthing machine of the present invention.
[0021] Description of reference numerals:
[0022] The first mounting rod 1 , the anti-retraction rod 2 , the limiting part 3 , the return spring 4 , the second mounting rod 5 , the mounting shaft 6 , the supporting wheel 7 , the reinforcing rib 8 , the limiting block 9 , the frame 10 , the mounting part 11 , and the mounting hole 12 . DETAILED DESCRIPTION
[0023] The following detailed description of the preferred embodiments of the present invention is provided in conjunction with the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art, thereby more clearly defining the scope of protection of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.
[0024] like Figure 1-3 As shown:
[0025] A retreat-stopping device includes a first mounting rod 1, wherein the bottom of the first mounting rod 1 is hinged to the upper end of the retreat-stopping rod 2, wherein the upper part of the front end of the retreat-stopping rod 2 extends upward and folds over to form a limiting portion 3; when the retreat is stopped, the limiting portion 3 abuts against the bottom of the front end of the first mounting rod 1; a return spring 4 is provided on the limit portion 3, and the other end of the return spring 4 is fixedly provided on the first mounting rod 4.
[0026] The basic principle of this device is that when the trenching and hilling machine is started, the stop rod 2 is straightened to limit the depth of the tool into the soil, the trenching and hilling machine moves forward, and the tool rotates. When the tool touches a hard object during the startup process or operation, the thrust of the tool rotation on the machine is greater than the thrust of the walking shaft (wheel) on the machine body. At this time, the rotation of the stop rod 2 will stop due to the cooperation between the limit part 3 and the bottom of the first mounting rod 1, and the soil will reduce the backlash or backlash amplitude of the entire trenching and hilling machine through the stop rod 2; when the trenching and hilling machine moves forward, the stop rod 2 will rotate backward to avoid affecting the forward movement of the trenching and hilling machine. The setting of the reset spring 4 can make the stop rod 2 always maintain a certain angle, and thus can always cooperate with the soil to produce a stop effect.
[0027] During implementation, in order to reduce the wear of the first mounting rod 1 and facilitate the installation of the backstop rod 2, a limiting block 9 is welded or integrally formed at the bottom of the first mounting rod 1, and the rear side of the upper end of the backstop rod 2 is hinged to the front end of the limiting block 9; the front side of the upper end of the backstop rod 2 extends upward and then extends backward. When stopping, the upper extension part of the limiting part 3 and the front end of the backstop rod 2, in order to further realize the limiting of the backstop rod 2, the rear extension part of the limiting part 3 abuts against the upper end of the limiting block 9; through the cooperation between the limiting part 3 and the front end and upper end of the limiting block 9, the limiting effect can also be improved when the edge of the front end of the limiting block 9 is worn.
[0028] During implementation, in order to further enhance the resetting effect of the anti-return rod 2 and enable the anti-return rod 2 to cooperate with the soil at any time, a second mounting rod 5 is welded on the limit portion 3, and at least one return spring 4 is provided at each end of the second mounting rod 5, and the other end of the return spring 4 is mounted on the mounting ears on both sides of the first mounting rod 1 in the horizontal direction; through the return springs 4 on both sides, the resetting effect of the anti-return rod 2 can be further enhanced, so that the anti-return rod 2 can better cooperate with the soil, and at the same time, the action of the two return springs 4 makes the restoring force more balanced and the stability better.
[0029] During implementation, in order to improve the stability of the trenching and earthing machine during use, a mounting shaft 6 is provided at the bottom of the first mounting rod 1, and the two ends of the mounting shaft 6 are rotatably connected to support wheels 7; through the rotation of the support wheels 7, the trenching and earthing machine can be helped to move forward when trenching, and at the same time, it can also support the trenching and earthing machine, making it more operable.
[0030] During implementation, in order to improve the strength of the anti-recoil rod 2, it can be achieved by thickening the anti-recoil rod 2, or a reinforcing rib 8 can be provided at the rear end of the anti-recoil rod 2; and the width of the anti-recoil rod 2 gradually increases from the front end to the rear end. The advantage of this is that, on the one hand, the strength of the anti-recoil rod 2 can be improved, and on the other hand, the thickness setting of the anti-recoil rod 2 can not only not affect the forward movement of the trenching and hilling machine, but also improve its anti-recoil effect.
[0031] This solution also provides a trenching and earthing machine, which includes a frame 10 arranged along the travel direction of the trenching and earthing machine, a mounting portion 11 welded to the front end of the frame 10, and the upper end of the first mounting rod 1 is fixedly connected to the mounting portion 11; the assembly of the trenching and earthing machine and the anti-recognition device is realized: specifically, the mounting portion 11 is also used to adjust the installation height of the first mounting rod 1 to adapt to trenching requirements of different depths, and the versatility is better.
[0032] As an embodiment, the mounting portion 11 is specifically a limiting sleeve, which is welded to the front end of the frame 10, and a limiting hole is set on the limiting sleeve, and a plurality of mounting holes 12 that match the limiting holes are evenly spaced on the first mounting rod; the combination of the limiting holes and the selection of different mounting holes 12 can adjust the installation height of the first mounting rod 1, specifically, the mounting portion 11 and the first mounting rod 1 are fixed by bolts or locating pins, which is simple and convenient; in other embodiments, the first mounting rod 1 and the mounting portion 11 can also be fixed by a clamp, or a length adjustment structure such as a telescopic limiting rod can be used as the first mounting rod 1.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention shall be defined by the appended claims.
Claims
1. A backstop device, characterized in that: The invention comprises a first mounting rod (1), the bottom of the first mounting rod (1) is rotatably connected to a stop rod (2), the upper part of the front end of the stop rod (2) is extended upward and folded to form a limiting portion (3); when stopping, the limiting portion (3) cooperates with the bottom of the first mounting rod (1); a return spring (4) is provided on the limit portion (3), and the other end of the return spring (4) is fixedly provided on the first mounting rod (1).
2. The anti-retraction device according to claim 1, characterized in that: A second mounting rod (5) is provided on the limiting portion (3), and two return springs (4) are provided, one at each end of the second mounting rod (5); the other end of the return spring (4) is provided on both sides of the first mounting rod (1) in the horizontal direction.
3. The anti-retraction device according to claim 1, characterized in that: A mounting shaft (6) is provided at the bottom of the first mounting rod (1), and both ends of the mounting shaft (6) are rotatably connected to support wheels (7).
4. The anti-retraction device according to claim 1, characterized in that: A reinforcing rib (8) is provided at the rear end of the anti-retraction rod (2); the width of the anti-retraction rod (2) gradually increases from the front end to the rear end.
5. The anti-retraction device according to claim 1, characterized in that: A limiting block (9) is fixedly provided at the bottom of the first mounting rod (1), and the rear side of the upper end of the anti-retraction rod (2) is rotatably connected to the front end of the limiting block (9); when anti-retraction is in progress, the limiting portion (3) abuts against the front end or upper end of the anti-retraction rod (2).
6. A backstop trenching and earthing machine, characterized by: The invention comprises the anti-recoil device according to any one of claims 1 to 5, and further comprises a frame (10) arranged along the travel direction of the trenching and hilling machine, a mounting portion (11) being provided at the front end of the frame (10), and the first mounting rod (1) being fixedly connected to the mounting portion (11).
7. The anti-retreat trenching and earthing machine according to claim 6, characterized in that: The installation height of the first installation rod (1) on the installation portion (11) is adjustable, or the length of the first installation rod (1) is adjustable.
8. The anti-retreat trenching and earthing machine according to claim 7, characterized in that: The mounting portion (11) includes a limiting sleeve, the limiting sleeve is fixedly arranged at the front end of the frame (10), a limiting hole is provided on the limiting sleeve, and a plurality of mounting holes (12) matching the limiting holes are provided at intervals on the first mounting rod (1).