Suspension telescopic shear type lifting mechanism

Abstract

The invention discloses a suspension telescopic shear type lifting mechanism, and relates to the technical field of road wreckers, the suspension telescopic shear type lifting mechanism comprises a bottom plate assembly, the bottom plate assembly is connected with a lifting plate assembly through a fork arm assembly, the suspension telescopic shear type lifting mechanism further comprises a carriage used for supporting automobile wheels, and the carriage is arranged on the lifting plate assembly and can horizontally reciprocate in the axial direction of the lifting plate assembly. The invention can be applied to the road wrecker which is laterally mounted left and right.

Description

Technical Field

[0001] The invention relates to the technical field of road tow trucks, in particular to a suspension telescopic scissor-type lifting mechanism. Background Art

[0002] At present, the existing side-mounted road tow trucks mainly realize the lateral movement and vertical lifting of the faulty vehicle through the horizontal mechanism and the vertical mechanism. The horizontal mechanism is mostly arranged above the vehicle chassis, and the vertical mechanism is arranged on the horizontal mechanism. For a side-mounted road tow truck with this structure, regardless of whether it carries a faulty vehicle, its vertical mechanism is always biased to the left or right side of the tow truck. The horizontal mechanism and the vertical mechanism are arranged relatively concentrated, so they occupy a large concentrated space above the chassis, resulting in a lateral shift in the center of gravity of the whole vehicle; in addition, the side-mounted road tow truck with this structure cannot realize the left and right bidirectional side loading function.

[0003] Existing scissor lifts are usually fixed structures. For example, the Chinese patent document "A Scissor Lift" (patent application number: 201921178188.3) discloses a scissor lift, which facilitates the movement of the vehicle by setting two ends of the upper plate at both ends of the lifting platform, thereby avoiding damage to the tires of the vehicle. However, this fixed scissor lift cannot be applied to left and right bidirectional side-mounted road tow trucks. Summary of the invention

[0004] In view of the defects existing in the prior art, the object of the present invention is to provide a suspension telescopic scissor-type lifting mechanism that can be applied to a left-right bidirectional side-mounted road tow truck.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a suspended telescopic scissor-type lifting mechanism, including a base plate assembly, which is connected to a lifting plate assembly through a fork arm assembly, and also includes a drag plate for supporting automobile wheels, which is arranged on the lifting plate assembly and can reciprocate horizontally along the axial direction of the lifting plate assembly.

[0006] A further improvement is that it also includes a lifting cylinder, the cylinder body of the lifting cylinder is hinged to the base plate assembly through a first connecting shaft, and the piston rod of the lifting cylinder is hinged to the fork arm assembly through a second connecting shaft.

[0007] A further improvement is that the fork arm assembly includes a first fork arm and a second fork arm, the middle parts of the first fork arm and the second fork arm are hinged by a first pin shaft, the proximal end of the first fork arm is hinged to the lifting plate assembly by a second pin shaft, the proximal end of the second fork arm is hinged to the base plate assembly by a third pin shaft, the distal end of the first fork arm is connected to a first friction roller compatible with the base plate assembly, and the distal end of the second fork arm is connected to a second friction roller compatible with the lifting plate assembly.

[0008] Further improvements are: the base plate assembly includes two first mounting plates arranged in parallel, and the two ends of the two first mounting plates are respectively connected by a first connecting rod; a first avoidance space is arranged between the two first mounting plates, and a first mounting seat for connecting the lifting cylinder is arranged at the proximal end of the first avoidance space; the cross-section of the first mounting plate is a U-shaped structure with the opening facing upward, and the inner bottom wall of the first mounting plate forms a first guide surface adapted to the first friction roller, and a second mounting seat for connecting the second fork arm is arranged at the proximal end of the first guide surface.

[0009] Further improvements are: walking wheels are axially arranged at both ends of the first avoidance space, and the walking wheels include a first wheel seat and a second wheel seat; the cross-sections of the first wheel seat and the second wheel seat are both U-shaped structures with openings facing downwards, the side walls of the first wheel seat are provided with waist-shaped holes, and the inner top wall of the first wheel seat is provided with positioning columns; the second wheel seat is arranged in the opening of the first wheel seat, and the outer top wall of the second wheel seat is connected to the positioning column through a spring; a wheel body is arranged in the opening of the second wheel seat, and the wheel axle of the wheel body passes through the side wall of the second wheel seat and is connected to the waist-shaped hole.

[0010] A further improvement is that a telescopic slide rail is connected to the outer side of the base plate assembly.

[0011] Further improvements are: the lifting plate assembly includes two second mounting plates arranged in parallel, and the two ends of the two second mounting plates are respectively connected by a second connecting rod; a second avoidance space is arranged between the two second mounting plates, the cross-section of the second mounting plate is a U-shaped structure with an opening facing downward, and the inner top wall of the second mounting plate forms a second guide surface adapted to the second friction roller, and a third mounting seat for connecting the first fork arm is arranged at the proximal end of the second guide surface; a limiting groove is arranged on the side wall of the second mounting plate, and reinforcing ribs are arranged at the position corresponding to the limiting groove of the second avoidance space.

[0012] Further improvements are: the cross-section of the drag plate is a U-shaped structure with the opening facing downward; the two side walls of the second mounting plate are respectively provided with a number of guide rollers adapted to the inner top wall of the drag plate, and the outer side wall of the second mounting plate is provided with a number of friction blocks adapted to the inner side wall of the drag plate.

[0013] A further improvement is that a connection hole for connecting to an external traction mechanism is provided on the top wall of the drag plate, and the width of the end of the second mounting plate gradually narrows to form a guide portion, which facilitates the external traction mechanism to drive the drag plate to slide in and out of the lifting plate assembly.

[0014] A further improvement is that the first friction roller is connected to a lower push plate, and the second friction roller is connected to an upper push plate.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the carriage is arranged on the lifting plate assembly and can reciprocate horizontally along the axial direction of the lifting plate assembly, thereby realizing bidirectional side installation.

[0017] 2. In the present invention, the running wheels of the bottom plate assembly cooperate with the telescopic slide rails, so that the scissor-type lifting mechanism in the retracted state can be completely hidden under the chassis of the automobile, thereby improving the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a suspended telescopic scissor lift mechanism in an embodiment of the present invention;

[0019] Figure 2 It is a front view of a suspension telescopic scissor lift mechanism in an embodiment of the present invention;

[0020] Figure 3 It is a side view of a suspended telescopic scissor lift mechanism in an embodiment of the present invention;

[0021] Figure 4 for Figure 2 Sectional view along AA direction;

[0022] Figure 5 for Figure 2 Cross-sectional view along the BB direction;

[0023] Figure 6 is a three-dimensional diagram of a base plate assembly according to an embodiment of the present invention;

[0024] Figure 7 is a cross-sectional view of a base plate assembly according to an embodiment of the present invention;

[0025] Figure 8 A three-dimensional diagram of a traveling wheel in an embodiment of the present invention;

[0026] Fig. 9 A three-dimensional diagram of a lifting plate assembly in an embodiment of the present invention;

[0027] Fig.10 A bottom view of the lifting plate assembly in an embodiment of the present invention;

[0028] Fig.11 A three-dimensional diagram of a carriage according to an embodiment of the present invention;

[0029] Fig.12 Schematic diagram of the working state of the suspended telescopic scissor lifting mechanism in an embodiment of the present invention.

[0030] Reference numerals:

[0031] 1-bottom plate assembly; 101-first mounting plate; 102-first connecting rod; 103-first avoidance space; 104-first guide surface; 105-first mounting seat; 106-second mounting seat; 107-traveling wheel; 108-first wheel seat; 109-waist-shaped hole; 110-second wheel seat; 111-wheel body; 112-wheel axle; 113-positioning column; 114-spring;

[0032] 2-lifting plate assembly; 201-second mounting plate; 202-second connecting rod; 203-second avoidance space; 204-second guide surface; 205-third mounting seat; 206-guide roller; 207-friction block; 208-guide part; 209-limiting groove; 210-reinforcement rib;

[0033] 3-fork arm assembly; 31-first fork arm; 32-second fork arm; 33-first pin shaft; 34-second pin shaft; 35-third pin shaft; 36-lower push plate; 37-first friction roller; 38-upper push plate; 39-second friction roller;

[0034] 4-lifting cylinder; 41-first connecting shaft; 42-second connecting shaft;

[0035] 5- carriage; 51- connection hole;

[0036] 6- Telescopic slide rails. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0038] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

[0040] The following is a further description of the specific embodiments of the present invention in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the present invention are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the present invention, but cannot be understood as limiting the present invention.

[0041] See also Figure 1 to Figure 5 As shown, an embodiment of the present invention provides a suspended telescopic scissor-type lifting mechanism, including a base plate assembly 1, which is connected to a lifting plate assembly 2 through a fork arm assembly 3, and also includes a drag plate 5 for supporting vehicle wheels, which is arranged on the lifting plate assembly 2 and can reciprocate horizontally along the axial direction of the lifting plate assembly 2.

[0042] See also Figure 2 As shown, it also includes a lifting cylinder 4, a cylinder body of the lifting cylinder 4 is hinged to the base plate assembly 1 through a first connecting shaft 41, and a piston rod of the lifting cylinder 4 is hinged to the fork arm assembly 3 through a second connecting shaft 42.

[0043] See also Figure 4-5 As shown, the fork arm assembly 3 includes a first fork arm 31 and a second fork arm 32, the middle parts of the first fork arm 31 and the second fork arm 32 are hinged by a first pin shaft 33, the proximal end of the first fork arm 31 is hinged to the lifting plate assembly 2 by a second pin shaft 34, the proximal end of the second fork arm 32 is hinged to the bottom plate assembly 1 by a third pin shaft 35, the distal end of the first fork arm 31 is connected to a first friction roller 37 adapted to the bottom plate assembly 1, and the distal end of the second fork arm 32 is connected to a second friction roller 39 adapted to the lifting plate assembly 2. Specifically, the first friction roller 37 is connected to a lower push plate 36, and the second friction roller 39 is connected to an upper push plate 38.

[0044] See also Figure 6-7 As shown, the base plate assembly 1 includes two first mounting plates 101 arranged in parallel, and the two ends of the two first mounting plates 101 are respectively connected by a first connecting rod 102; a first avoidance space 103 is arranged between the two first mounting plates 101, and a first mounting seat 105 for connecting the lifting cylinder 4 is arranged at the proximal end of the first avoidance space 103; the cross-section of the first mounting plate 101 is a U-shaped structure with an opening facing upward, and the inner bottom wall of the first mounting plate 101 forms a first guide surface 104 adapted to the first friction roller 37, and a second mounting seat 106 for connecting the second fork arm 32 is arranged at the proximal end of the first guide surface 104.

[0045] See also Figure 7-8 As shown, running wheels 107 are axially arranged at both ends of the first avoidance space 103, and the running wheels 107 include a first wheel seat 108 and a second wheel seat 110; the cross-sections of the first wheel seat 108 and the second wheel seat 110 are both U-shaped structures with the opening facing downward, the side wall of the first wheel seat 108 is provided with a waist-shaped hole 109, and the inner top wall of the first wheel seat 108 is provided with a positioning column 113; the second wheel seat 110 is arranged in the opening of the first wheel seat 108, and the outer top wall of the second wheel seat 110 is connected to the positioning column 113 through a spring 114; a wheel body 111 is arranged in the opening of the second wheel seat 110, and the wheel axle 112 of the wheel body 111 passes through the side wall of the second wheel seat 110 and is connected to the waist-shaped hole 109.

[0046] See also Fig.12 As shown, the outer side of the bottom plate assembly 1 is connected with a telescopic slide rail 6. Through the telescopic slide rail 6 and the running wheel 107, the scissor lift mechanism in the retracted state can be completely hidden under the chassis of the car, thereby improving the space utilization.

[0047] See also Figure 9-10 As shown, the lifting plate assembly 2 includes two second mounting plates 201 arranged in parallel, and the two ends of the two second mounting plates 201 are connected by a second connecting rod 202 respectively; a second avoidance space 203 is arranged between the two second mounting plates 201, the cross-section of the second mounting plate 201 is a U-shaped structure with the opening facing downward, and the inner top wall of the second mounting plate 201 forms a second guide surface 204 adapted to the second friction roller 39, and the proximal end of the second guide surface 204 is provided with a third mounting seat 205 for connecting the first fork arm 31; a limiting groove 209 is arranged on the side wall of the second mounting plate 201, and a reinforcing rib 210 is arranged at a position corresponding to the second avoidance space 203 and the limiting groove 209.

[0048] See also Fig.11 As shown, the cross section of the carriage 5 is a U-shaped structure with the opening facing downward; the two side walls of the second mounting plate 201 are respectively provided with a plurality of guide rollers 206 adapted to the inner top wall of the carriage 5, and the outer side wall of the second mounting plate 201 is provided with a plurality of friction blocks 207 adapted to the inner side wall of the carriage 5. Specifically, the top wall of the carriage 5 is provided with a connection hole 51 for connecting to an external traction mechanism, and the width of the end of the second mounting plate 201 is gradually narrowed to form a guide portion 208, which is convenient for the external traction mechanism to drive the carriage 5 to slide into and out of the lifting plate assembly 2.

[0049] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the well-known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.

Claims

1. A suspended telescopic scissor-type lifting mechanism, comprising a base plate assembly (1), wherein the base plate assembly (1) is connected to a lifting plate assembly (2) via a fork arm assembly (3), characterized in that: It also comprises a drag plate (5) for supporting the wheels of the automobile. The drag plate (5) is arranged on the lifting plate assembly (2) and can horizontally reciprocate along the axial direction of the lifting plate assembly (2).

2. The suspended telescopic scissor lift mechanism according to claim 1, characterized in that: It also comprises a lifting cylinder (4), wherein the cylinder body of the lifting cylinder (4) is hinged to the base plate assembly (1) via a first connecting shaft (41), and the piston rod of the lifting cylinder (4) is hinged to the fork arm assembly (3) via a second connecting shaft (42).

3. The suspended telescopic scissor lifting mechanism according to claim 1, characterized in that: The fork arm assembly (3) comprises a first fork arm (31) and a second fork arm (32); the middle parts of the first fork arm (31) and the second fork arm (32) are hinged via a first pin shaft (33); the proximal end of the first fork arm (31) is hinged to the lifting plate assembly (2) via a second pin shaft (34); the proximal end of the second fork arm (32) is hinged to the base plate assembly (1) via a third pin shaft (35); the distal end of the first fork arm (31) is connected to a first friction roller (37) adapted to the base plate assembly (1); and the distal end of the second fork arm (32) is connected to a second friction roller (39) adapted to the lifting plate assembly (2).

4. The suspended telescopic scissor lifting mechanism according to claim 3, characterized in that: The base plate assembly (1) comprises two first mounting plates (101) arranged in parallel, and the two ends of the two first mounting plates (101) are connected respectively by a first connecting rod (102); a first avoidance space (103) is arranged between the two first mounting plates (101), and a first mounting seat (105) for connecting to a lifting cylinder (4) is arranged at the proximal end of the first avoidance space (103); the cross section of the first mounting plate (101) is a U-shaped structure with an opening facing upward, and the inner bottom wall of the first mounting plate (101) forms a first guide surface (104) adapted to the first friction roller (37), and a second mounting seat (106) for connecting to a second fork arm (32) is arranged at the proximal end of the first guide surface (104).

5. The suspended telescopic scissor lift mechanism according to claim 4, characterized in that: Traveling wheels (107) are axially arranged at both ends of the first avoidance space (103), and the traveling wheels (107) include a first wheel seat (108) and a second wheel seat (110); the cross-sections of the first wheel seat (108) and the second wheel seat (110) are both U-shaped structures with openings facing downwards, the side wall of the first wheel seat (108) is provided with a waist-shaped hole (109), and the inner top wall of the first wheel seat (108) is provided with a positioning column (113); the second wheel seat (110) is arranged in the opening of the first wheel seat (108), and the outer top wall of the second wheel seat (110) is connected to the positioning column (113) through a spring (114); a wheel body (111) is arranged in the opening of the second wheel seat (110), and the wheel axle (112) of the wheel body (111) passes through the side wall of the second wheel seat (110) and is connected to the waist-shaped hole (109).

6. The suspended telescopic scissor lift mechanism according to claim 1, characterized in that: The outer side of the base plate assembly (1) is connected to a telescopic slide rail (6).

7. The suspended telescopic scissor lift mechanism according to claim 3, characterized in that: The lifting plate assembly (2) comprises two second mounting plates (201) arranged in parallel, and the two ends of the two second mounting plates (201) are respectively connected by a second connecting rod (202); a second avoidance space (203) is arranged between the two second mounting plates (201); the cross section of the second mounting plate (201) is a U-shaped structure with an opening facing downward, and the inner top wall of the second mounting plate (201) forms a second guide surface (204) adapted to the second friction roller (39), and the proximal end of the second guide surface (204) is provided with a third mounting seat (205) for connecting to the first fork arm (31); a limiting groove (209) is arranged on the side wall of the second mounting plate (201), and a reinforcing rib (210) is arranged at a position corresponding to the second avoidance space (203) and the limiting groove (209).

8. The suspended telescopic scissor lift mechanism according to claim 7, characterized in that: The cross section of the carriage (5) is a U-shaped structure with its opening facing downward; the two side walls of the second mounting plate (201) are respectively provided with a plurality of guide rollers (206) adapted to the inner top wall of the carriage (5); the outer side wall of the second mounting plate (201) is provided with a plurality of friction blocks (207) adapted to the inner side wall of the carriage (5).

9. The suspended telescopic scissor lift mechanism according to claim 7, characterized in that: The top wall of the drag plate (5) is provided with a connection hole (51) for connecting to an external traction mechanism, and the width of the end of the second mounting plate (201) is gradually narrowed to form a guide portion (208), so as to facilitate the external traction mechanism to drive the drag plate (5) to slide into and out of the lifting plate assembly (2).

10. The suspended telescopic scissor lift mechanism according to claim 3, characterized in that: The first friction roller (37) is connected to a lower push plate (36), and the second friction roller (39) is connected to an upper push plate (38).

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