Single-shaft based mechanical steering mechanism and skid loader

Abstract

The application discloses a kind of mechanical type operating mechanism based on single shaft and skid loader, including single shaft system, left walking system, right walking system, left pedal system, right pedal system.Left walking system is rotatably supported on single shaft system, and control is realized to left walking pump by operating left walking system;Right walking system is rotatably supported on single shaft system, and control is realized to right walking pump by operating right walking system;Left pedal system is rotatably supported on single shaft system, and the driving of the valve rod of multi-way valve is realized by operating left pedal system, to realize the lifting and falling action of the boom of whole vehicle;The driving of the valve rod of multi-way valve is realized by operating right pedal system, to realize the bucket of whole vehicle and the action of turning over bucket.The application greatly saves the use space, reduces the number of transmission rod, has simple linkage, small idle stroke, compact structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of compact skid steer loaders, in particular to a compact skid steer loader control mechanism, and belongs to the technical field of engineering machinery. BACKGROUND

[0002] A compact skid steer loader is a small engineering machinery mainly used for indoor work, which can enter and exit a work site through a building elevator. Due to the particularity of its working conditions, the whole machine has a small volume, a compact structure, and a very small available space inside the machine.

[0003] The control mode of a skid steer loader includes hydraulic control, electric control and mechanical control. Due to the particularity of its working conditions, the control mechanism of a compact skid steer loader is mainly mechanical. In the existing mechanical control mechanism, there are two types: a pull rod type with multiple connecting rods and a flexible shaft type with a flexible shaft. However, due to the extremely limited space of a compact skid steer loader, the bending radius and fixed position of a flexible shaft have high space size requirements, which cannot be met. Therefore, a compact skid steer loader is realized by using multiple connecting rods. The pull rod type control mechanism of the existing compact skid steer loader has problems such as large cumulative idle stroke, large space occupation, high failure rate, etc. due to the large number of connecting rods, multiple rotating shafts and long transmission path. SUMMARY

[0004] The purpose of the present application is to provide a single-axis-based mechanical control system to solve the problems of the existing compact skid steer loader control mechanism, such as a large number of connecting rods, a long transmission path, a large cumulative idle stroke, and a large space occupation.

[0005] The present application is implemented according to the following technical solutions:

[0006] In a first aspect, the present application provides a single-axis-based mechanical control mechanism, which includes:

[0007] A single-axis system mainly includes a shaft and a bearing with a seat; the shaft can rotate freely relative to the frame in the bearing with a seat;

[0008] A walking system mainly includes a handle, a handle rod, a pull rod and a reset mechanism; the handle drives the handle rod, the handle rod rotates around the shaft, drives the pull rod to move forward and backward, and controls the walking pump; under the action of the reset mechanism, the pull rod can automatically return to the middle position;

[0009] A pedal system mainly includes a fixed seat, a pedal and a pull rod; the pedal rotates on the fixed seat, drives the pull rod to move forward and backward, and on the one hand, drives the boom associated valve rod of the multi-way valve, and on the other hand, drives the bucket associated valve rod of the multi-way valve.

[0010] In some embodiments, the walking system includes:

[0011] The left walking system comprises a left handle, a left handle rod, a left pull rod, a left reset mechanism, and a pump fixing seat. The left handle drives the left handle rod to rotate around the shaft through the welding sleeve on the left handle rod, and drives the left pull rod to move forward and backward. The left pull rod controls the left walking pump through the pump fixing seat. Under the action of the left reset mechanism, the left pull rod can automatically return to the middle position.

[0012] The right walking system comprises a right handle, a right handle rod, a right pull rod, a right reset mechanism, and a pump fixing seat. The right handle rod rotates around the shaft through the welding sleeve on the right handle rod, and drives the right pull rod to move forward and backward. The right pull rod controls the right walking pump through the pump fixing seat. Under the action of the right reset mechanism, the right pull rod can automatically return to the middle position.

[0013] In some embodiments, the left handle rod comprises:

[0014] A bent rod, the top of which is provided with threads for assembling the left handle;

[0015] A welding sleeve installed at the bottom of the bent rod, the welding sleeve being installed on the shaft in clearance fit;

[0016] A threaded hole rod I installed on the welding sleeve for connecting the left pull rod.

[0017] In some embodiments, the left pull rod comprises:

[0018] A left rod, one end of which is provided with a long thread;

[0019] A pair of mounting nuts and stopper combinations respectively installed at both ends of the long thread for connecting the reset mechanism;

[0020] A pair of fisheye joints with spherical surface hinge respectively installed at both ends of the left rod, the fisheye joint away from the long thread being installed on the threads of the rod I, and the fisheye joint close to the long thread being connected with the pump fixing seat.

[0021] In some embodiments, the right handle rod comprises:

[0022] A bent rod, the top of which is provided with threads for assembling the right handle;

[0023] A welding sleeve installed at the bottom of the bent rod, the welding sleeve being installed on the shaft in clearance fit;

[0024] A threaded hole rod II installed on the welding sleeve for connecting the right pull rod.

[0025] In some embodiments, the right pull rod comprises:

[0026] A right rod, both ends of which are provided with long threads;

[0027] A pair of mounting nuts and a pair of stop pieces are installed on the long threads on both sides respectively, and are used to connect the reset mechanism;

[0028] A pair of fisheye joints with spherical surface are installed on both ends of the right rod respectively, one of which is installed on the thread of the rod II, and the other is connected with the pump fixing base.

[0029] In some embodiments, the left reset mechanism and the right reset mechanism have substantially the same shape, and each is composed of a reset base and two reset springs; the two reset springs are installed in the stepped sleeve of the reset base, and the two reset springs are separated by the middle partition plate in the stepped sleeve; the rod part of the left or right pull rod passes through the two reset springs, and the two stop pieces on the rod part are used in cooperation with the reset springs between the two stop pieces, so that the left or right pull rod can be automatically reset when it moves forward and backward.

[0030] In some embodiments, the pump fixing base includes base I and base II, and the base I and the base II each have a V-shaped notch, the V-shaped notches of the base I and the base II are clamped on the square column of the traveling pump, and the base I and the base II are fastened by bolts; the base II is provided with a mounting thread hole, and the fisheye joint of the left or right pull rod is installed on the thread hole of the base II.

[0031] In some embodiments, the pedal system includes:

[0032] The left pedal system includes a left pedal fixing base, a left pedal, a left pedal pull rod, a left pedal sleeve, and a fork pin; the left pedal rotates on the left pedal fixing base to drive the left pedal pull rod to move forward and backward, the left pedal pull rod drives the left pedal sleeve to rotate on the shaft, and the left pedal sleeve drives the boom connecting valve rod of the multi-way valve through the fork pin.

[0033] The right pedal system includes a right pedal fixing base, a right pedal, a right pedal pull rod, and a fork pin; the right pedal rotates on the right pedal fixing base to drive the right pedal pull rod to move forward and backward, and the right pedal pull rod drives the bucket connecting valve rod of the multi-way valve through the fork pin.

[0034] In some embodiments, the left pedal sleeve includes:

[0035] A connecting rod is arranged in parallel with the shaft, and the length of the connecting rod is less than the length of the shaft;

[0036] A sleeve I and a sleeve II are installed at both ends of the connecting rod respectively, and the sleeve I and the sleeve II are installed on the shaft in clearance fit;

[0037] A connecting rod I is installed on the sleeve I to be connected with the left pedal pull rod.

[0038] Connecting rod II is installed on the sleeve II, and one end of the connecting rod II is connected with the fork pin, and the other end of the fork pin is connected with the operating arm valve rod of the multi-way valve.

[0039] In some embodiments, the left pedal connecting rod comprises:

[0040] Connecting rod I;

[0041] A pair of spherical eye joints are installed at two ends of the connecting rod I, one of which is installed on the left pedal, and the other is installed on the connecting rod I.

[0042] In some embodiments, the right pedal connecting rod comprises:

[0043] Connecting rod II, one end of which is connected with the fork pin;

[0044] One spherical eye joint is installed at the other end of the connecting rod II, and the eye joint is installed on the right pedal.

[0045] In the second aspect, the application provides a skid loader provided with the single-axle-based mechanical control mechanism.

[0046] Compared with the prior art, the application has the following beneficial effects:

[0047] The application provides a single-axle-based mechanical control mechanism, a left handle rod, a right handle rod and a left pedal sleeve share the same shaft, movement transmission is completed by rotating around the shaft, the whole machine function is realized, the use space is greatly saved, the number of transmission rods is reduced, and the rod system is simple, the idle stroke is small and the structure is compact. BRIEF DESCRIPTION OF DRAWINGS

[0048] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the application, and the schematic embodiments of the application and the description thereof serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0049] In the drawings:

[0050] Figure 1 It is a schematic diagram of the mechanical control mechanism of the application;

[0051] Figure 2 It is a schematic diagram of the left handle rod and the right handle rod of the application (a is the left handle rod, and b is the right handle rod);

[0052] Figure 3 It is a schematic diagram of the left pedal sleeve of the application;

[0053] Figure 4 Fig. 1 is a schematic diagram of the left reset mechanism of the present application;

[0054] Figure 5 Fig. 2 is a schematic diagram of the left pull rod and the right pull rod of the present application (a is the left pull rod and b is the right pull rod);

[0055] Figure 6 Fig. 3 is a schematic diagram of the pump fixing seat of the present application.

[0056] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below by referring to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0058] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as limiting the devices or elements indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0059] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connecting”, “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] As Figure 1As shown in the figure, a single-axis based mechanical control mechanism is mainly used for compact skid steer loader. It comprises a single-axis system, a left walking system, a right walking system, a left pedal system and a right pedal system. The left walking system is rotatably supported on the single-axis system, and the left walking pump is controlled by operating the left walking system. The right walking system is rotatably supported on the single-axis system, and the right walking pump is controlled by operating the right walking system. The left pedal system is rotatably supported on the single-axis system, and the boom joint valve rod of the multi-way valve is driven by operating the left pedal system, so as to realize the lifting and falling actions of the boom of the whole vehicle. The bucket joint valve rod of the multi-way valve is driven by operating the right pedal system, so as to realize the bucket closing and turning actions of the bucket of the whole vehicle. The present application greatly saves the use space, reduces the number of transmission rods, and has simple rod system, small idle stroke and compact structure.

[0061] The single-axis system is further described below.

[0062] Continuing to refer to Figure 1 As shown in the figure, the single-axis system comprises a shaft 1 and a bearing with seat 2. The shaft 1 is provided with a bearing with seat 2 at each end, and the bearing with seat 2 is installed on the vehicle frame. The shaft 1 can freely rotate relative to the vehicle frame in the bearing with seat 2.

[0063] The left walking system is further described below.

[0064] As shown in the figure, Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 The left walking system comprises a left handle 3, a left handle rod 4, a left pull rod 5, a left reset mechanism 6 and a pump fixing seat 7. The left handle 3 is installed on the upper part of the left handle rod 4 through threads. The middle part of the left handle rod 4 is a welding sleeve 4b, and the welding sleeve 4b of the left handle rod 4 is installed on the shaft 1. The welding sleeve 4b of the left handle rod 4 is provided with a grease nipple 4c. The welding sleeve 4b is in clearance fit with the shaft 1, the grease nipple 4c lubricates the fit part of the shaft 1 and the welding sleeve 4b of the left handle rod 4, the left handle rod 4 can freely rotate around the shaft 1, and the other end of the left handle rod 4 is a threaded rod I 4d.

[0065] The left pull rod 5 comprises a left rod 5a, a mounting nut 5b, a baffle 5c and a fish eye joint 5d. The fish eye joint 5d is a spherical surface joint and can freely rotate within a certain angle range. The fish eye joint 5d is installed on the threads of the threaded rod I 4d of the left handle rod 4. The left rod 5a is provided with long threads, and the mounting nut 5b and the baffle 5c are installed on the long threads of the left rod 5a.

[0066] The left reset mechanism 6 comprises a left reset seat 6a and reset springs 6b, the reset springs 6b are arranged in the stepped sleeve of the left reset seat 6a respectively, and the two reset springs 6b are separated by the middle part of the stepped sleeve. The left rod 5a passes through the stepped sleeve of the left reset seat 6a, and through the action of the stopper 5c and the reset spring 6b, the left rod 5a can realize automatic reset when it moves forward and backward.

[0067] The pump fixing seat 7 comprises a seat I 7a and a seat II 7b, both of which have V-shaped openings, the V-shaped openings of the seat I 7a and the seat II 7b are clamped on the square column of the pump, and the seat I 7a and the seat II 7b are fastened by bolts. The seat II 7b is provided with a threaded hole, and the fish-eye joint with a long thread at one end of the left pull rod 5 is installed on the threaded hole of the seat II 7b.

[0068] As can be seen from the above, the left handle 3 drives the left handle rod 4 to rotate around the shaft 1 through the welding sleeve 4b thereon, drives the left pull rod 5 to move forward and backward, and the left pull rod 5 realizes the control of the left walking pump through the pump fixing seat 7. The left reset mechanism 6 can make the left handle 3 return to the middle position when it is not subjected to external force.

[0069] The right walking system is further described as follows.

[0070] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , the right walking system comprises a right handle 8, a right handle rod 9, a right pull rod 10, a right reset mechanism 11 and a pump fixing seat 7. One end of the right handle rod 9 is provided with a thread 9a, and the right handle 8 is installed on the upper part of the right handle rod 9 through the thread. The middle part of the right handle rod 9 is a welding sleeve 9b, the welding sleeve 9b in the right handle rod 9 is installed on the shaft 1, the welding sleeve 9b of the right handle rod 9 is provided with a grease nipple 4c, the welding sleeve 9b and the shaft 1 are gap-fitted, the grease nipple 4c lubricates the fitting part of the shaft 1 and the welding sleeve 9b of the right handle rod 9, and the right handle rod 9 can rotate freely around the shaft 1. The other end of the right handle rod 9 is a rod II 9c with a threaded hole.

[0071] The right pull rod 10 comprises a right rod 10a, a mounting nut 5b, a stopper 5c and a fish-eye joint 5d. The fish-eye joint 5d is a spherical joint and can rotate freely within a certain angle range, and one fish-eye joint 5d is arranged at each end of the right rod 10a. The fish-eye joint 5d at one end of the right rod 10a is installed on the thread of the rod II 9c of the right handle rod 9. The right rod 10a is provided with long threads at both ends, and the right rod 10a is provided with the mounting nut 5b and the stopper 5c at the long threaded part.

[0072] The right reset mechanism 11 includes right reset seats 11a and reset springs 6b, which are arranged in the stepped sleeves of the right reset seats 11a respectively, and the two reset springs 6b are separated by the middle part of the stepped sleeves. The right rod 10a passes through the stepped sleeves of the right reset seats 11a, and through the effects of the stopper 5c and the reset springs 6b, the right rod 10a can realize automatic reset when it moves forward and backward.

[0073] The pump fixing seat 7 includes seat I 7a and seat II 7b, both of which have V-shaped openings, the V-shaped openings of the seat I 7a and the seat II 7b are clamped on the square column of the pump, and the seat I 7a and the seat II 7b are fastened by bolts. The seat II 7b is provided with a threaded hole for mounting, and the fish-eye joint at one end of the right pull rod 10 is mounted on the threaded hole of the seat II 7b.

[0074] As can be seen from the above, the right handle 8 drives the right handle rod 9 to rotate around the shaft 1 through the welding sleeve 9b thereon, drives the right pull rod 10 to move forward and backward, and the right pull rod 10 realizes control of the right walking pump through the pump fixing seat 7. The right reset mechanism 11 can make the right handle 8 return to the middle position when it is not subjected to external force.

[0075] The left pedal system is further described as follows.

[0076] As shown in Figure 1 , Figure 3 , the left pedal system includes left pedal fixing seats 12, left pedal plates 13, left pedal pull rods 14, left pedal sleeves 15, and fork pins 16. The left pedal plates 13 are hinged to the left pedal fixing seats 12, and the left pedal fixing seats 12 are fixedly installed on the frame. The left pedal sleeve 15 is provided with sleeve I 15a, sleeve II 15b, connecting rod I 15c, and connecting rod II 15d, and the sleeve I 15a and the sleeve II 15b of the left pedal sleeve 15 are provided with grease nipples 4c and pass through the shaft 1, the sleeve I 15a and the sleeve II 15b are gap-fitted with the shaft 1, the grease nipples 4c lubricate the fitting parts of the shaft 1 and the sleeve I 15a and the sleeve II 15b of the left pedal sleeve 15, and the left pedal sleeve 15 can rotate freely around the shaft 1.

[0077] The left pedal pull rod 14 includes a pull rod I 14a and a fish-eye joint 5d, the fish-eye joint 5d is a spherical hinge and can rotate freely within a certain angle range, the pull rod I 14a is provided with a fish-eye joint 5d at each end, one end of the fish-eye joint 5d of the left pedal pull rod 14 is connected to the left pedal plate 13, and the other end of the fish-eye joint 5d of the left pedal pull rod 14 is connected to the connecting rod I 15c of the left pedal sleeve 15. One end of the fork pin 16 is installed on the connecting rod II 15d of the left pedal sleeve 15, and the other end of the fork pin 16 is connected to the moving arm connecting valve rod of the multi-way valve.

[0078] As can be seen from the above, the left pedal 13 rotates on the left pedal fixing seat 12, driving the left pedal pull rod 14 and the left pedal sleeve 15, and driving the boom-connected valve stem of the multi-way valve through the fork pin 16 to realize the lifting and lowering action of the entire vehicle boom.

[0079] The above-mentioned right pedal system is further described below.

[0080] like Figure 1 As shown, the right pedal system includes a right pedal fixing seat 17, a right pedal 18, a right pedal rod 19, and a fork pin 16. The right pedal rod 19 includes a rod II 19a and a fisheye joint 5d. The fisheye joint 5d is provided at one end of the right pedal rod. The fisheye joint 5d is a spherical hinge that can rotate freely within a certain angle range. The fisheye joint 5d at one end of the right pedal rod 19 is connected to the right pedal 18. The other end of the right pedal rod 19 is provided with a fork pin 16. The fork pin 16 on the right pedal rod 19 is connected to the bucket connecting valve stem of the multi-way valve.

[0081] As can be seen from the above, the right pedal 18 rotates on the right pedal fixing seat 17 to drive the right pedal pull rod 19 to drive the bucket connecting valve stem of the multi-way valve to achieve the bucket retracting and dumping actions of the entire vehicle bucket.

[0082] In summary, the present invention provides a mechanical operating mechanism based on a single axis, in which the left handle rod 4, the right handle rod 9, and the left pedal sleeve 15 share the same axis 1, and complete motion transmission by rotating around it to realize the function of the whole machine, greatly save space, reduce the number of transmission rod systems, and have a small idle stroke and a compact structure.

[0083] The present invention also provides a skid steer loader equipped with the above-mentioned single-axis-based mechanical operating mechanism.

[0084] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0085] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0086] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiments made according to the technical essence of the present application without departing from the technical solution of the present application still belong to the scope of the present application.

Claims

1. A single-axis based mechanical steering mechanism, characterized in that, It comprises: A single-axis system mainly comprising an axle and a bearing; the axle can rotate freely relative to the frame in the bearing; A walking system mainly comprising a handle, a handle rod, a pull rod and a reset mechanism; the handle drives the handle rod, the handle rod rotates around the axle, drives the pull rod to move forward and backward, and controls the walking pump; under the action of the reset mechanism, the pull rod can automatically return to the middle position; A pedal system mainly comprising a fixed seat, a pedal and a pull rod; the pedal rotates on the fixed seat, drives the pull rod to move forward and backward, and drives the boom valve rod of the multi-way valve on one hand and drives the bucket valve rod of the multi-way valve on the other hand; The walking system comprises a left walking system, which comprises a left handle, a left handle rod, a left pull rod, a left reset mechanism and a pump fixed seat; the left handle drives the left handle rod, the left handle rod rotates around the axle through the welding sleeve on it, drives the left pull rod to move forward and backward, and controls the left walking pump through the pump fixed seat; under the action of the left reset mechanism, the left pull rod can automatically return to the middle position; The left handle rod comprises: A bent rod, the top of which is provided with a thread for assembling the left handle; A welding sleeve installed at the bottom of the bent rod, the welding sleeve is installed on the axle, and the two are gap-fitted; A threaded hole rod I installed on the welding sleeve for connecting the left pull rod; The left pull rod comprises: A left rod provided with a long thread at one end; A pair of mounting nuts and stopper combinations respectively installed at both ends of the long thread for connecting the reset mechanism; A pair of fisheye joints for spherical hinge connection respectively installed at both ends of the left rod, the fisheye joint away from the long thread is installed on the threaded hole rod I, and the fisheye joint close to the long thread is connected with the pump fixed seat; The pedal system comprises a left pedal system, which comprises a left pedal fixed seat, a left pedal, a left pedal pull rod, a left pedal sleeve and a fork pin; the left pedal rotates on the left pedal fixed seat, drives the left pedal pull rod to move forward and backward, the left pedal pull rod drives the left pedal sleeve to rotate on the axle, and the left pedal sleeve drives the boom valve rod of the multi-way valve through the fork pin; The left pedal sleeve comprises: A connecting rod arranged in parallel with the axle, and the length of the connecting rod is less than the length of the axle; A sleeve I and a sleeve II respectively installed at both ends of the connecting rod, and the sleeve I and the sleeve II are installed on the axle, and the two are gap-fitted; A connecting rod I installed on the sleeve I for connecting with the left pedal pull rod; A connecting rod II installed on the sleeve II and connected with one end of the fork pin, and the other end of the fork pin is connected with the boom valve rod of the multi-way valve; The left pedal pull rod comprises: A pull rod I; A pair of fisheye joints for spherical hinge connection respectively installed at both ends of the pull rod I, one of which is installed on the left pedal, and the other of which is installed on the connecting rod I.

2. The mechanical operating mechanism based on a single axle according to claim 1, wherein: The walking system further comprises a right walking system, which comprises a right handle, a right handle rod, a right pull rod, a right reset mechanism and a pump fixing seat; the right handle rod rotates around the shaft through the welding sleeve thereon to drive the right pull rod to move forward and backward, and the right pull rod controls the right walking pump through the pump fixing seat; under the action of the right reset mechanism, the right pull rod can automatically return to the middle position.

3. A single-axis based mechanical steering mechanism according to claim 2, wherein, The right handle rod comprises: a bent rod, the top of which is provided with a thread for assembling the right handle; a welding sleeve, which is installed at the bottom of the bent rod, and is installed on the shaft in clearance fit; a rod II with a threaded hole, which is installed on the welding sleeve to connect the right pull rod; The right pull rod comprises: a right rod, the two ends of which are provided with long threads; a pair of mounting nuts and stopper combinations, which are respectively installed on the long threads on the two sides to connect the reset mechanism; a pair of fisheye joints with spherical hinge, which are respectively located at the two ends of the right rod, one of which is installed on the thread of the rod II, and the other is connected with the pump fixing seat.

4. The mechanical control mechanism based on single shaft according to claim 2, wherein: the left reset mechanism and the right reset mechanism are substantially identical in shape, and each comprises a reset seat and two reset springs; the two reset springs are installed in the stepped sleeve of the reset seat, and are separated by the middle partition plate in the stepped sleeve; the rod of the left pull rod or the right pull rod passes through the two reset springs, and the two stoppers on the rod are used in cooperation with the reset springs between the two stoppers, so that the left pull rod or the right pull rod can automatically reset when moving forward and backward.

5. The mechanical control mechanism based on single shaft according to claim 2, wherein: the pump fixing seat comprises seat I and seat II, the seat I and the seat II each have a V-shaped notch, the V-shaped notches of the seat I and the seat II are clamped on the square column of the walking pump, and the seat I and the seat II are fastened by bolts; the seat II is provided with a mounting threaded hole, and the fisheye joint of the left pull rod or the right pull rod is installed on the threaded hole of the seat II.

6. The mechanical control mechanism based on single shaft according to claim 1, wherein: the pedal system further comprises a right pedal system, which comprises a right pedal fixing seat, a right pedal, a right pedal pull rod and a fork pin; the right pedal rotates on the right pedal fixing seat to drive the right pedal pull rod to move forward and backward, and the right pedal pull rod drives the bucket joint valve rod of the multi-way valve through the fork pin.

7. A single-axis based mechanical steering mechanism according to claim 6, wherein, The right pedal pull rod comprises: a pull rod II, one end of which is connected with the fork pin; a fisheye joint with spherical hinge, which is installed at the other end of the pull rod II, and is installed on the right pedal.

8. A skid steer loader, characterized in that: the mechanical control mechanism based on single shaft according to any one of claims 1 to 7 is installed.

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