Pedal type hydraulic lifting platform

Abstract

The utility model discloses a pedal type hydraulic lifting platform which comprises a channel steel frame and supporting legs, the supporting legs are fixedly connected to the four corners of the lower portion of the channel steel frame, the bottom of the channel steel frame is fixedly connected with an inverted prismatic table support, and the bottom of the inverted prismatic table support is rotationally connected with a hydraulic cylinder. The input end of the hydraulic cylinder is fixedly connected with an oil pressing piston. The inverted pyramid frustum support is arranged below the channel steel frame, so that the hydraulic cylinder is vertically placed instead of being transversely placed, the angle change of the hydraulic cylinder is reduced when the lifting frame carries out lifting work, the lever support, the oil pressing piston and the foot rest lever are matched, the foot rest action is not affected, and meanwhile the foot rest effect is improved. The whole hydraulic power assembly can be integrated into a pedal type jack, an independent hydraulic pump and a corresponding oil conveying pipeline do not need to be arranged, and the equipment complexity and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic lifting platforms, in particular to a pedal-type hydraulic lifting platform. Background Art

[0002] The hydraulic cylinders of the existing lifting platforms with scissor-type mechanical structures are mostly installed in a horizontal manner, with both ends directly installed below the scissor-type mechanical structure, or one end rotatably connected to the base of the lifting platform. Although a larger working stroke can be obtained, the angle of the hydraulic cylinder is basically required to change over a large range when working with the deformation of the scissor-type mechanical structure. Therefore, in order to ensure stable power input, the hydraulic pump part of the hydraulic cylinder is usually installed independently and connected through an oil pipe. A considerable part of the causes of failure of hydraulic equipment are caused by oil leakage in the oil pipe.

[0003] For example, the utility model with application number CN202121632207.2 discloses a galvanized steel plate base for conveniently controlling the height of the lifting platform. It is provided with a foot-operated hydraulic pump. The pressurized end of the foot-operated hydraulic pump is connected to the pressure inlet of the hydraulic cylinder through a hydraulic pipe. By stepping on the foot-operated hydraulic pump, power is transmitted to the hydraulic cylinder through the hydraulic pipe. The telescopic rod of the hydraulic cylinder drives the second connecting rod to slide along the sliding groove, driving the lifting platform to rise; the equipment provides hydraulic power through foot-operated action, but requires the setting of an independent hydraulic pump and a corresponding oil pipeline, which increases the complexity of the equipment and the difficulty of subsequent maintenance, and has certain room for improvement. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a foot-operated hydraulic lifting platform to solve the above problem.

[0005] To achieve the above-mentioned purpose, a foot-operated hydraulic lifting platform is provided, comprising a channel steel frame and legs, the legs are fixedly connected at the four corners of the lower side of the channel steel frame, the bottom of the channel steel frame is fixedly connected to a chamfered platform bracket, the bottom of the chamfered platform bracket is rotatably connected to a hydraulic cylinder, the input end of the hydraulic cylinder is fixedly connected to an oil pressure piston, a piston rod is arranged above the oil pressure piston and a return spring is slidably sleeved on the outer side of the piston rod, a lever bracket is fixedly connected to a position corresponding to the oil pressure piston on one side of the hydraulic cylinder, a pedal rod is rotatably connected to the top of the lever bracket on the side close to the oil pressure piston, a foot pedal is fixedly connected to the end of the foot pedal away from the lever bracket, and an oil return pedal is arranged on the side close to the foot pedal at the bottom of the hydraulic cylinder;

[0006] A lifting frame is arranged above the channel steel frame, a lifting plate is arranged on the top of the lifting frame, a square groove is opened in the middle of the lifting plate, and a rubber pad is fixedly connected to the top of the lifting plate.

[0007] According to the described foot-operated hydraulic lifting platform, the channel steel frame includes two channel steel bodies and a square steel pipe, the two ends of one side of the square steel pipe are respectively fixedly connected to the corresponding channel steel bodies, the notches of the two channel steel bodies are arranged in opposite directions, four limiting holes are equidistantly provided in the middle of one end of the two channel steel bodies away from the square steel pipe, and the one end of the two channel steel bodies away from the square steel pipe is fixedly clamped with a limiting rod through the limiting hole.

[0008] According to the described foot-operated hydraulic lifting platform, the chamfered platform bracket includes four connecting oblique rods and a chamfered platform seat, the tops of the four connecting oblique rods are respectively fixedly connected to the tops of the four supporting legs, the bottoms of the four connecting oblique rods are respectively fixedly connected to the four corners of the chamfered platform seat, the position of the chamfered platform seat corresponds to one side of the middle part of the channel steel frame close to the square steel pipe, and the middle part of the chamfered platform seat is rotatably connected to the bottom of the hydraulic cylinder.

[0009] According to the described foot-operated hydraulic lifting platform, both sides of one end of the bottom of the lifting frame close to the limiting hole are respectively slidably connected to the corresponding channel steel body, both sides of one end of the bottom of the lifting frame away from the limiting hole are respectively rotatably connected to both ends of the square steel pipe, both sides of one end of the top of the lifting frame close to the limiting hole are slidably connected to the bottom of the lifting plate, both sides of one end of the top of the lifting frame away from the limiting hole are rotatably connected to the bottom of the lifting plate, and the lower middle part of the lifting frame is rotatably connected to the top of the hydraulic cylinder.

[0010] According to the described foot-operated hydraulic lifting platform, one end of the foot-operated rod below and close to the lever bracket is rotatably connected to the piston rod of the oil pressure piston.

[0011] According to the described foot-operated hydraulic lifting platform, diagonal bracing plates are fixedly connected to the bottom of the channel steel frame at positions corresponding to the four legs, and the bottoms of the plurality of diagonal bracing plates are fixedly connected to the corresponding legs.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. The utility model arranges a chamfered platform bracket under the channel steel frame to change the hydraulic cylinder from a horizontal placement to a vertical placement, and then lowers the lifting frame for lifting work. The angle of the hydraulic cylinder changes, and cooperates with the lever bracket, the oil pressure piston and the pedal rod. While not affecting the pedal action, the entire hydraulic power assembly can be integrated into a foot-operated jack, without the need to arrange an independent hydraulic pump and a corresponding oil pipeline, thereby reducing the complexity of the equipment and the maintenance cost, and enhancing the practicality of the device.

[0014] 2. The channel steel frame of the utility model is provided with a plurality of limit holes and corresponding limit rods. In daily use, the sliding stroke of the lifting frame can be limited by the limit rods installed in the outermost limit holes. When the lifting platform needs to be lifted for a long time, the lifting position of the lifting frame can be mechanically limited by inserting the limit rods into the corresponding limit holes, thereby reducing the pressure of the hydraulic cylinder and enhancing the practicability of the device.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a foot-operated hydraulic lifting platform of the utility model;

[0018] Figure 2 This is a top axonometric view of a foot-operated hydraulic lifting platform of the utility model;

[0019] Figure 3 This is a side structural diagram of a foot-operated hydraulic lifting platform of the utility model;

[0020] Figure 4 This is a bottom-up axonometric view of a foot-operated hydraulic lifting platform of the utility model;

[0021] Legend:

[0022] 1. Channel steel frame; 2. Support legs; 3. Chamfered platform bracket; 4. Hydraulic cylinder; 5. Oil pressure piston; 6. Lever bracket; 7. Return spring; 8. Pedal rod; 9. Foot pedal; 10. Lifting frame; 11. Lifting plate; 12. Rubber pad; 13. Diagonal support plate; 14. Oil return pedal; 15. Square groove; 101. Channel steel body; 102. Square steel pipe; 103. Limit hole; 104. Limit rod; 301. Connecting diagonal rod; 302. Chamfered platform seat. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4The utility model embodiment provides a pedal-type hydraulic lifting platform, including a channel steel frame 1 and legs 2, the legs 2 are fixedly connected at the four corners below the channel steel frame 1, the bottom of the channel steel frame 1 is fixedly connected to the positions corresponding to the four legs 2, and the bottoms of the plurality of diagonal bracing plates 13 are fixedly connected to the corresponding legs 2, the bottom of the channel steel frame 1 is fixedly connected to a chamfered platform bracket 3, the bottom of the chamfered platform bracket 3 is rotatably connected to a hydraulic cylinder 4, the input end of the hydraulic cylinder 4 is fixedly connected to an oil pressure piston 5, a piston rod is arranged above the oil pressure piston 5 and a return spring 7 is slidably sleeved on the outer side of the piston rod, and one side of the hydraulic cylinder 4 is corresponding to the oil pressure piston 5 A lever bracket 6 is fixedly connected at the position, a pedal rod 8 is rotatably connected to the top of the lever bracket 6 near the oil pressure piston 5, an end of the pedal rod 8 below the lever bracket 6 near the end of the lever bracket 6 is rotatably connected to the piston rod of the oil pressure piston 5, a pedal 9 is fixedly connected to the end of the pedal rod 8 away from the lever bracket 6, an oil return pedal 14 is provided on the side of the bottom of the hydraulic cylinder 4 near the pedal 9 for resetting the hydraulic cylinder 4, the hydraulic cylinder of the utility model cooperates with the lever bracket 6, the oil pressure piston 5 and the pedal rod 8, so that the entire hydraulic power assembly can be integrated into a pedal jack, without the need to set up an independent hydraulic pump and a corresponding oil pipeline, reducing the complexity of the equipment and the maintenance cost;

[0025] The channel steel frame 1 includes two channel steel bodies 101 and a square steel tube 102. The two ends of one side of the square steel tube 102 are respectively fixedly connected to the corresponding channel steel body 101. The notches of the two channel steel bodies 101 are arranged in opposite directions. Four limiting holes 103 are evenly spaced in the middle of one end of the two channel steel bodies 101 away from the square steel tube 102. The ends of the two channel steel bodies 101 away from the square steel tube 102 are fixedly connected to the limiting rod 104 through the limiting holes 103. The chamfered platform bracket 3 includes four connecting oblique rods 301 and a prism seat 302. The tops of the four connecting diagonal rods 301 are fixedly connected to the tops of the four legs 2, and the bottoms of the four connecting diagonal rods 301 are fixedly connected to the four corners of the prism seat 302. The position of the prism seat 302 corresponds to the side of the middle of the channel steel frame 1 close to the square steel pipe 102. The middle of the prism seat 302 is rotatably connected to the bottom of the hydraulic cylinder 4. By arranging a chamfered prism bracket 3 under the channel steel frame 1, the hydraulic cylinder 4 is changed from horizontal placement to vertical placement, thereby reducing the angle change of the hydraulic cylinder 4 when the lifting frame 10 is raised or lowered;

[0026] A lifting frame 10 is arranged above the channel steel frame 1, and a lifting plate 11 is arranged on the top of the lifting frame 10. The two sides of one end of the bottom of the lifting frame 10 close to the limiting hole 103 are respectively slidably connected with the corresponding channel steel body 101, and the two sides of one end of the bottom of the lifting frame 10 away from the limiting hole 103 are respectively rotatably connected with the two ends of the square steel pipe 102. The two sides of one end of the top of the lifting frame 10 close to the limiting hole 103 are slidably connected with the bottom of the lifting plate 11, and the two sides of one end of the top of the lifting frame 10 away from the limiting hole 103 are rotatably connected with the bottom of the lifting plate 11. The middle part of the lower part of the lifting frame 10 is rotatably connected with the top of the hydraulic cylinder 4, a square groove 15 is opened in the middle of the lifting plate 11, and a rubber pad 12 is fixedly connected to the top of the lifting plate 11, and a square hole corresponding to the square groove 15 is opened in the middle of the rubber pad 12.

[0027] Working principle: The utility model arranges a chamfered platform bracket 3 under the channel steel frame 1 so that the hydraulic cylinder 4 is placed vertically instead of horizontally, thereby reducing the angle change of the hydraulic cylinder 4 when the lifting frame 10 is lifted. In conjunction with the lever bracket 6, the oil pressure piston 5 and the pedal rod 8, the entire hydraulic power assembly can be integrated into a foot-operated jack, without the need to arrange an independent hydraulic pump and a corresponding oil pipeline, and the hydraulic cylinder 4 will only swing slightly when working, which will not affect the pedaling action; and the multiple limiting holes 103 and the corresponding limiting rods 104 arranged on the channel steel frame 1 can be used in daily use to limit the maximum sliding stroke of the bottom of the lifting frame 10 through the limiting rods 104 installed in the outermost limiting holes 103, and when the lifting platform needs to be lifted for a long time, the limiting rods 104 can be inserted into the limiting holes 103 at the corresponding positions, thereby mechanically limiting the lifting position of the lifting frame 10, thereby reducing the pressure of the hydraulic cylinder 4 and improving the service life of the equipment.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A pedal-type hydraulic lifting platform, comprising a channel steel frame (1) and legs (2), characterized in that: The four corners of the lower side of the channel steel frame (1) are fixedly connected with supporting legs (2); the bottom of the channel steel frame (1) is fixedly connected with a chamfered platform bracket (3); the bottom of the chamfered platform bracket (3) is rotatably connected with a hydraulic cylinder (4); the input end of the hydraulic cylinder (4) is fixedly connected with an oil pressure piston (5); a piston rod is arranged above the oil pressure piston (5) and a return spring (7) is slidably sleeved on the outer side of the piston rod; a lever bracket (6) is fixedly connected with a position corresponding to the oil pressure piston (5) on one side of the hydraulic cylinder (4); a pedal rod (8) is rotatably connected with the top of the lever bracket (6) near the oil pressure piston (5); a pedal (9) is fixedly connected with the end of the pedal rod (8) away from the lever bracket (6); and an oil return pedal (14) is arranged on the bottom of the hydraulic cylinder (4) near the pedal (9); A lifting frame (10) is arranged above the channel steel frame (1), a lifting plate (11) is arranged on the top of the lifting frame (10), a square groove (15) is opened in the middle of the lifting plate (11), and a rubber pad (12) is fixedly connected to the top of the lifting plate (11).

2. A foot-operated hydraulic lifting platform according to claim 1, characterized in that: The channel steel frame (1) comprises two channel steel bodies (101) and a square steel tube (102); two ends of one side of the square steel tube (102) are respectively fixedly connected to the corresponding channel steel body (101); the notches of the two channel steel bodies (101) are arranged in opposite directions; four limiting holes (103) are evenly spaced in the middle of one end of the two channel steel bodies (101) away from the square steel tube (102); and the one end of the two channel steel bodies (101) away from the square steel tube (102) is fixedly clamped to a limiting rod (104) through the limiting hole (103).

3. A foot-operated hydraulic lifting platform according to claim 2, characterized in that: The chamfered pyramid support (3) comprises four connecting oblique rods (301) and a prism seat (302), the tops of the four connecting oblique rods (301) are fixedly connected to the tops of the four supporting legs (2), the bottoms of the four connecting oblique rods (301) are fixedly connected to the four corners of the prism seat (302), the position of the prism seat (302) corresponds to the middle of the channel steel frame (1) close to the square steel pipe (102), and the middle of the prism seat (302) is rotatably connected to the bottom of the hydraulic cylinder (4).

4. A foot-operated hydraulic lifting platform according to claim 2, characterized in that: The two sides of one end of the bottom of the lifting frame (10) close to the limiting hole (103) are respectively slidably connected to the corresponding channel steel body (101), the two sides of one end of the bottom of the lifting frame (10) away from the limiting hole (103) are respectively rotatably connected to the two ends of the square steel pipe (102), the two sides of one end of the top of the lifting frame (10) close to the limiting hole (103) are slidably connected to the bottom of the lifting plate (11), the two sides of one end of the top of the lifting frame (10) away from the limiting hole (103) are rotatably connected to the bottom of the lifting plate (11), and the lower middle part of the lifting frame (10) is rotatably connected to the top of the hydraulic cylinder (4).

5. The foot-operated hydraulic lifting platform according to claim 1, characterized in that: One end of the pedal rod (8) below and close to the lever bracket (6) is rotatably connected to the piston rod of the oil pressure piston (5).

6. The foot-operated hydraulic lifting platform according to claim 1, characterized in that: A diagonal brace plate (13) is fixedly connected to the bottom of the channel steel frame (1) at positions corresponding to the four supporting legs (2), and the bottoms of the plurality of diagonal brace plates (13) are fixedly connected to the corresponding supporting legs (2).

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