Telescopic adjusting mechanism of self-propelled sprayer axle

Abstract

The utility model relates to the technical field of agriculture and forestry pesticide spraying equipment, in particular to a telescopic adjusting mechanism of a self-propelled sprayer axle. Comprising an outer sleeve, a telescopic inner pipe and a telescopic oil cylinder. The tail of a cylinder body of the telescopic oil cylinder is hinged to the tail of the outer sleeve, and the end of a piston rod of the telescopic oil cylinder is hinged to the outer end of the telescopic inner pipe. Sliding pads are installed on the four pipe walls of the front portion of the outer sleeve respectively, and the pipe walls of the telescopic inner pipe make contact with the sliding pads on the four pipe walls of the outer sleeve. Telescopic adjustment of the left transverse telescopic assembly and the right transverse telescopic assembly can be achieved through the telescopic oil cylinders, time and labor are saved, labor intensity is greatly reduced, and working efficiency is improved; meanwhile, sliding pads are installed on the peripheral pipe walls of the outer sleeve respectively, the pipe wall of the telescopic inner pipe does not make contact with the inner pipe wall of the outer sleeve, and therefore friction resistance in the telescopic adjusting process can be greatly reduced, and the telescopic inner pipe can stretch out and draw back more smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural and forestry spraying equipment, in particular to a telescopic adjustment mechanism for a self-propelled spray machine axle. Background Art

[0002] With the mechanization and intelligence of agricultural production, self-propelled sprayers, as a high-efficiency plant protection agricultural machinery, are widely used in weeding, pest control, sterilization, disease prevention and land fertilization in paddy fields and dry fields.

[0003] Since the planting spacing or row spacing of crops is determined according to their own growth requirements and regional characteristics, traditional plant protection sprayers are mostly customized with fixed wheelbase axles according to user needs to meet their usage requirements. As a result, plant protection sprayer manufacturers have to produce axles with different wheelbases, resulting in many varieties, long cycles, difficult production scheduling, and very low production efficiency and economic benefits.

[0004] In order to solve the above technical problems, Chinese patent document CN211881887U discloses a telescopic adjustment mechanism for a bridge of an elevated plant protection sprayer, which adopts the following technical solutions: the bridge comprises an outer sleeve, a telescopic inner sleeve, a telescopic transmission shaft and a distance adjustment positioning mechanism; the outer sleeve is fixed to the middle section of the bridge, and one end of the telescopic inner sleeve is slidably connected to the outer sleeve. Specifically, an involute inner spline is processed on the inner wall of the outer sleeve, and an involute outer spline is processed on the outer wall of the telescopic inner sleeve, and the involute inner spline matches the involute outer spline; the other end of the telescopic inner sleeve is fixed to the upper limb assembly of the bridge; the telescopic transmission shaft is arranged in the inner cavity of the telescopic inner sleeve; and the outer sleeve and the telescopic inner sleeve are fixed in position by the distance adjustment positioning mechanism after the distance adjustment is completed. The bridge of the bridge of the elevated plant protection sprayer is designed to be telescopic and adjustable, and the position is locked after adjustment, so as to achieve the purpose of flexibly adjusting the wheelbase of the vehicle according to the different row spacing or spacing of crops.

[0005] However, in the above technical solution, the outer sleeve and the telescopic inner sleeve are assembled by spline connection. When adjusting the length of the axle, workers need to manually complete the telescopic adjustment of the telescopic inner sleeves on both sides, and then manually operate the distance adjustment screws and positioning nuts on both sides to lock the position after adjustment. The whole adjustment process is cumbersome, labor-intensive, time-consuming and labor-intensive, and urgently needs to be improved. Utility Model Content

[0006] The utility model aims to provide a telescopic adjustment mechanism for a self-propelled sprayer axle to solve the above technical problems.

[0007] In order to solve the above problems, the technical solution adopted by the utility model is:

[0008] A telescopic adjustment mechanism for a self-propelled sprayer axle comprises an outer sleeve and a telescopic inner tube, the inner end of the telescopic inner tube being inserted into the outer sleeve; and a telescopic oil cylinder; the cylinder body tail of the telescopic oil cylinder is hingedly assembled on the tail of the outer sleeve, and the end of the piston rod thereof is hingedly assembled on the outer end of the telescopic inner tube; sliding pads are respectively installed on the four tube walls on the front of the outer sleeve, the four sliding pads protrude inwardly from the inner walls on the four sides of the outer sleeve, and the tube wall of the telescopic inner tube contacts the sliding pads on the four tube walls on the outer sleeve.

[0009] Preferably, fixed sliding pads are installed on the left tube wall and the bottom tube wall of the outer sleeve, and adjustable sliding pads are installed on the top tube wall and the right tube wall; the fixed sliding pads are fastened to the corresponding tube wall on the outer sleeve by circular pressure plates and bolts; the adjustable sliding pads are assembled on the corresponding tube wall on the outer sleeve by threads, and are locked on the outside by an annular pressure plate and bolts.

[0010] Preferably, two sets of sliding pads are respectively installed on the four tube walls of the front portion of the outer sleeve.

[0011] Preferably, an outer sleeve flange is fixed to the tail end of the outer sleeve, and a first hinged seat is fixed on the outer sleeve flange; a telescopic tube flange is fixed to the outer end of the telescopic inner tube, and a second hinged seat is fixed on the telescopic tube flange; the tail end of the cylinder body of the telescopic oil cylinder is hinged on the first hinged seat, and the end of the piston rod is hinged on the second hinged seat.

[0012] Preferably, the outer sleeve flange and the telescopic tube flange are respectively provided with through holes at their centers.

[0013] Beneficial effect: Compared with the prior art, the telescopic adjustment mechanism described in the utility model is provided with a telescopic cylinder. The driver can realize the telescopic adjustment of the left and right lateral telescopic assemblies by operating the hydraulic system to control the telescopic cylinder in the cab, which saves time and effort, greatly reduces labor intensity, and improves work efficiency; at the same time, sliding pads are respectively installed on the surrounding tube walls of the outer sleeve, and the tube wall of the telescopic inner tube does not contact the inner tube wall of the outer sleeve, thereby greatly reducing the friction resistance in the telescopic adjustment process, and making the telescopic inner tube telescope more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the outer sleeve in the embodiment of the utility model (I);

[0016] Figure 3 This is a schematic diagram of the structure of the outer sleeve in the embodiment of the utility model (II);

[0017] Figure 4 It is a structural schematic diagram of the telescopic inner tube in the embodiment of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the adjustable sliding pad described in the embodiment of the utility model;

[0019] Figure 6 The utility model is applied to the axle of a self-propelled sprayer.

[0020] In the figure: 1-outer sleeve; 11-outer sleeve flange; 12-first hinge seat; 2-telescopic inner tube; 21-telescopic tube flange; 22-second hinge seat; 3-telescopic cylinder; 4-through hole; 51-annular pressure plate; 52-adjustable sliding pad; 52A-hexagonal wrench hole; 53-circular pressure plate; 54-adjustable sliding pad; 6-transmission box; 7-longitudinal wheel frame head. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings and specific embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. Example

[0022] Reference Figure 1 The telescopic adjustment mechanism of the self-propelled sprayer axle described in this embodiment includes an outer sleeve 1, a telescopic inner tube 2 and a telescopic cylinder 3.

[0023] The inner end of the telescopic inner tube 2 is inserted into the outer tube 1. The specific assembly method is as follows: sliding pads are respectively installed on the four tube walls of the front part of the outer tube 1. In this embodiment, two sets of sliding pads are respectively installed on the four tube walls of the front part of the outer tube 1. Figure 2 , Figure 3 The sliding pads on the four sides all protrude inward from the inner walls of the outer sleeve 1 on the four sides, and the tube wall of the telescopic inner tube 2 contacts the sliding pads on the tube walls on the four sides of the outer sleeve, thereby avoiding contact with the inner tube wall of the outer sleeve 1, reducing the wear between the two and reducing the friction resistance during the telescopic adjustment process, thereby making the telescopic inner tube 2 more smooth.

[0024] Specifically, fixed sliding pads 54 are installed on the left and bottom tube walls of the outer sleeve 1, and adjustable sliding pads 52 are installed on the top and right tube walls; the fixed sliding pads 54 are fastened to the corresponding tube walls of the outer sleeve 1 through a circular pressing plate 53 and bolts.

[0025] The fixed sliding pad 54 is assembled as follows: first, the fixed sliding pad 54 is fixed on the circular pressing plate 53, and then the fixed sliding pad 54 is respectively inserted into the assembly holes on the left tube wall and the bottom tube wall of the outer tube 1, and then the circular pressing plate 53 is fixed to the outer tube wall of the outer tube 1 by bolts. The thickness of the fixed sliding pad 54 is greater than the tube wall thickness of the outer tube 1, so that after the assembly is completed, it protrudes from the inner wall of the outer tube 1. After the fixed sliding pads 54 on the left tube wall and the bottom tube wall of the outer tube 1 are assembled, they are fixed and cannot be adjusted.

[0026] like Figure 5 As shown, the outer circumference of the adjustable sliding pad 52 is provided with an external thread, and the center of the back is provided with an inner hexagon wrench hole 52A. When assembling, the adjustable sliding pad 52 is first threadedly assembled on the corresponding tube wall of the outer sleeve 1 by an inner hexagon wrench, and the outer side of the adjustable sliding pad 52 is locked by an annular pressing plate 51 and bolts to prevent it from falling off. The spacing between the two sets of relative sliding pads can be adjusted by an inner hexagon wrench, so that the sliding pads on four sides are in contact with the four sides of the telescopic inner tube 2. After a period of use, when the sliding pads on four sides become thinner due to wear, the telescopic inner tube 2 will become radially loose. At this time, the adjustable sliding pad 52 can be screwed with an inner hexagon wrench to readjust the spacing between the two sets of relative sliding pads.

[0027] The tail of the telescopic oil cylinder 3 is hingedly assembled on the tail of the outer sleeve 1, and the end of the piston rod is hingedly assembled on the outer end of the telescopic inner tube 2. Figure 3 , 4 As shown, an outer sleeve flange 11 is fixed to the tail end of the outer sleeve 1, and a first hinge seat 12 is fixed to the outer sleeve flange 11; Figure 4 As shown, a telescopic tube flange 21 is fixed to the outer end of the telescopic inner tube 2, and a second hinge seat 22 is fixed to the telescopic tube flange 21; the tail of the cylinder body of the telescopic oil cylinder 3 is hinged on the first hinge seat 12, and the end of the piston rod is hinged on the second hinge seat 22.

[0028] The centers of the outer sleeve flange 11 and the telescopic tube flange 21 are respectively provided with through holes 4 for the transmission shaft to pass through.

[0029] like Figure 6 As shown, the telescopic adjustment mechanism described in this embodiment is installed on the axle of the self-propelled sprayer as follows: the outer sleeve flange 11 is fixedly connected to the connecting flange of the transmission box 6 by bolts; the telescopic pipe flange 21 is fixedly connected to the connecting flange of the longitudinal wheel frame head 7 by bolts.

[0030] At the same time, the two ends of the transverse transmission shaft assembled by spline connection respectively penetrate the through holes 4 in the center of the outer sleeve flange 11 and the telescopic tube flange 21, and extend into the transmission box 6 and the longitudinal wheel frame head 7, and are respectively connected to the output end of the transmission box 6 and the input end of the longitudinal transmission shaft. The transverse transmission shaft, the longitudinal transmission shaft and their transmission methods are all prior art, which are not shown in the drawings and will not be described here.

[0031] The technical contents not described in detail in this specification are all prior arts well known to those skilled in the art.

[0032] The above is only an illustrative specific implementation method of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in this field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model. It should also be noted that the various components of the utility model are not limited to the above-mentioned overall application. The various technical features described in the specification of the utility model can be selected one by one or multiple ones can be selected and used in combination according to actual needs. Therefore, the utility model should naturally cover other combinations and specific applications related to the utility model points of this case.

Claims

1. A telescopic adjustment mechanism for a self-propelled sprayer axle, comprising an outer sleeve (1) and a telescopic inner tube (2), wherein the inner end of the telescopic inner tube (2) is inserted into the outer sleeve (1); characterized in that: It also comprises a telescopic oil cylinder (3); the rear end of the cylinder body of the telescopic oil cylinder (3) is hingedly mounted on the rear end of the outer sleeve (1), and the end of the piston rod thereof is hingedly mounted on the outer end of the telescopic inner tube (2); sliding pads are respectively mounted on the four tube walls on the front of the outer sleeve (1), and the four sliding pads protrude inwardly from the four inner walls of the outer sleeve (1), and the tube wall of the telescopic inner tube (2) contacts the sliding pads on the four tube walls of the outer sleeve.

2. The telescopic adjustment mechanism of the axle of the self-propelled sprayer according to claim 1, characterized in that: Fixed sliding pads (54) are installed on the left tube wall and the bottom tube wall of the outer tube (1), and adjustable sliding pads (52) are installed on the top tube wall and the right tube wall; the fixed sliding pads (54) are fastened to the corresponding tube wall of the outer tube (1) by means of a circular pressing plate (53) and bolts; the adjustable sliding pads (52) are assembled on the corresponding tube wall of the outer tube (1) by means of threads, and are locked on the outside by means of an annular pressing plate (51) and bolts.

3. The telescopic adjustment mechanism of the axle of the self-propelled sprayer according to claim 2, characterized in that: Two sets of sliding pads are respectively installed on the four tube walls at the front of the outer sleeve (1).

4. The telescopic adjustment mechanism of the axle of the self-propelled sprayer according to claim 2, characterized in that: An outer sleeve flange (11) is fixed to the rear end of the outer sleeve (1), and a first hinge seat (12) is fixed to the outer sleeve flange (11); a telescopic tube flange (21) is fixed to the outer end of the telescopic inner tube (2), and a second hinge seat (22) is fixed to the telescopic tube flange (21); the rear end of the cylinder body of the telescopic oil cylinder (3) is hinged to the first hinge seat (12), and the end of the piston rod is hinged to the second hinge seat (22).

5. The telescopic adjustment mechanism of the axle of the self-propelled sprayer according to claim 4, characterized in that: Through holes (4) are respectively provided at the centers of the outer sleeve flange (11) and the telescopic tube flange (21).

Images