Transportation and hoisting equipment of limited space special explosion-proof hoisting machinery

Abstract

The utility model relates to hoisting equipment technical field provides the special explosion -proof hoisting machinery transport hoist and mount equipment of limited space, including hoist frame, set up the mobile seat of hoist frame crossbeam and set up the lifting trolley of mobile seat, lifting trolley includes base and brake wheel, be equipped with the slide block of slidable on base, the hydraulic brake cylinder is hinged to have on slide block, base still be equipped with the screw rod of by motor drive, screw rod is connected with slide block drive connection, to drive slide block and the hydraulic brake cylinder hinged to its on mobile, be used for compensating the wear clearance of brake shoe.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to explosion-proof lifting and transport equipment for confined spaces. Background Technology

[0002] Explosion-proof lifting and transport equipment for confined spaces, as large lifting devices, are used in heavy-duty material handling in workshops. The reliability and stability of its braking system directly affect the overall safety and efficiency of the machine. In existing technologies, the braking mechanisms of explosion-proof lifting and transport equipment for confined spaces mostly adopt hydraulic or pneumatic drive, achieving braking through friction between the brake shoes and the brake wheel. However, during long-term use, the brake shoes will wear down, leading to increased clearance, which will affect the braking effect and even cause problems such as insufficient braking force and braking lag. Therefore, we propose explosion-proof lifting and transport equipment for confined spaces. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a special explosion-proof lifting and hoisting equipment for confined spaces to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] Explosion-proof lifting and hoisting equipment for confined spaces includes a hoisting frame, a movable seat set on the crossbeam of the hoisting frame, and a lifting trolley set on the movable seat. The lifting trolley includes a base and a brake wheel. The base is provided with a sliding slider, and a hydraulic brake cylinder is hinged on the slider.

[0006] The base is also equipped with a lead screw driven by a motor. The lead screw is connected to the slider to drive the slider and the hydraulic brake cylinder hinged thereon to move, in order to compensate for the wear gap of the brake shoe. The base is provided with a strip groove, and the slider is slidably set in the strip groove. The brake connecting rod is arc-shaped and symmetrically arranged on the periphery of the brake wheel.

[0007] Preferably, the lifting trolley also includes a pair of brake linkages hinged to the base, brake shoes disposed on the brake linkages, and a linkage connecting the tops of the two brake linkages to enable them to move synchronously; the output end of the hydraulic brake cylinder is connected to the brake linkages via a lever mechanism to drive its action.

[0008] Preferably, the lever mechanism includes a pull rod arm, one end of which is hinged to the top of one of the brake linkages, and the other end of which is hinged to the output end of the hydraulic brake cylinder; a connecting rod is also hinged to the base, and the end of the connecting rod is hinged to the pull rod arm to form a fulcrum.

[0009] Preferably, the end of the lever arm near the brake link has two hinge points, one above the other, which are hinged to the top of the brake link and the other to the link, respectively.

[0010] Preferably, the lead screw is connected to the output end of the motor.

[0011] This utility model provides a special explosion-proof lifting and hoisting equipment for confined spaces. It has the following beneficial effects:

[0012] 1. By using a motor-driven lead screw mechanism, the overall installation position of the hydraulic cylinder can be automatically adjusted to compensate for the increased clearance caused by brake shoe wear. This structure can quickly restore the optimal braking stroke without replacing parts, ensuring stable braking force, extending the service life of the braking system, and significantly reducing maintenance frequency and costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A side view diagram;

[0015] Figure 3 This is a schematic diagram of the braking structure on the lifting trolley of this utility model;

[0016] Figure 4 This utility model Figure 3 A three-dimensional schematic diagram;

[0017] Figure 5 This utility model Figure 4 Partial illustration.

[0018] In the diagram: 1. Lifting frame; 2. Moving seat; 3. Lifting trolley; 31. Base; 32. Brake linkage; 33. Connecting rod; 34. Hydraulic cylinder; 35. Brake shoe; 36. Connecting rod; 37. Tie rod arm; 4. Strip groove; 41. Slider; 42. Lead screw. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of this utility model, not all of it. Based on this utility model, all other inventions obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] See attached document Figure 1-5The explosion-proof lifting and transport equipment for confined spaces includes a lifting frame 1. A slide rail is provided on the crossbeam of the lifting frame 1 along its length. A movable seat 2 is slidably mounted on the slide rail. A lifting trolley 3 is also provided on the movable seat 2 for lifting materials. A caster wheel is also connected to the base of the lifting frame 1, which can control the displacement of the entire lifting equipment and facilitate displacement even in confined spaces.

[0021] The lifting trolley 3 includes a base 31 and a brake wheel fixedly mounted on the base 31. A pair of brake linkages 32 are hinged on the base 31. The brake linkages 32 are distributed in an arc shape on the periphery of the brake wheel. Brake shoes 35 are installed on the two brake linkages 32. The two brake shoes 35 can be closed to grip the periphery of the brake wheel to achieve braking operation.

[0022] The top ends of the two brake linkages 32 are connected to the same linkage 36, which is used to control the two brake linkages 32 to clamp synchronously.

[0023] A connecting rod 33 and a hydraulic cylinder 34 are also hinged on the base 31. The connecting rod 33 and the hydraulic cylinder 34 are located on one side of one of the brake linkages 32. A pull rod arm 37 is also included. One end of the pull rod arm 37 is hinged to the top end of the brake linkage 32, and the other end is hinged to the output end of the hydraulic cylinder 34. The connecting rod 33 is located between the brake linkage 32 and the hydraulic cylinder 34, and the end of the connecting rod 33 is hinged to the pull rod arm 37 to form a lever structure. The pull rod arm 37 has two hinge points, one above the other, near the end of the brake linkage 32. The brake linkage 32 is hinged to the lower hinge point, and the connecting rod 36 is hinged to the upper hinge point.

[0024] The connecting rod 33 forms the fulcrum of the lever arm 37. When the hydraulic cylinder 34 retracts, the lever arm 37 uses the hinge point of the connecting rod 33 as the fulcrum to push the brake link 32 near the connecting rod 33 to deflect counterclockwise. Through the connecting rod 36, it pulls the other brake link 32 to deflect clockwise. The two brake links 32 together grip the circumference of the brake wheel to complete the braking.

[0025] During long-term braking operation, the brake shoe 35 will inevitably wear. If the stroke of the hydraulic cylinder 34 is controlled to brake at this time, insufficient braking force will inevitably occur. In order to facilitate stroke compensation after wear, a strip groove 4 is provided on the base 31. A slider 41 is slidably arranged in the strip groove 4. The slider 41 is hinged to the cylinder body of the hydraulic cylinder 34. A lead screw 42 is threadedly connected to the hydraulic cylinder 34. One end of the lead screw 42 is connected to the lead screw seat in the strip groove 4, and the other end of the lead screw 42 is connected to the output end of the motor (not shown in the figure) through a coupling. The motor is electrically connected to the battery mounted on the base 31. The motor is electrically connected to the control switch and is filled with explosion-proof material. The position of the hydraulic cylinder 34 can be adjusted by the motor driving screw 42, thereby adjusting the gap between the brake shoe 35 and the brake wheel, thereby changing the braking torque and realizing braking compensation. The lifting trolley (3) is also covered with an explosion-proof structure, which completely seals the potential ignition sources such as the power supply on the lifting trolley (3) inside an explosion-proof structure.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The above description is only used to illustrate the technical solutions of this utility model, and is not intended to limit it. Although the utility model has been described in detail with reference to the foregoing, those skilled in the art should understand that modifications can still be made to the foregoing technical solutions, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the various technical solutions of this utility model.

Claims

1. A special explosion-proof lifting and hoisting equipment for confined spaces, comprising a hoisting frame (1), a movable seat (2) mounted on the crossbeam of the hoisting frame, and a lifting trolley (3) mounted on the movable seat, wherein the lifting trolley (3) comprises a base (31) and a brake wheel, characterized in that: The base (31) is provided with a sliding slider (41), and a hydraulic brake cylinder (34) is hinged on the slider (41). The base (31) is also provided with a lead screw (42) driven by a motor. The lead screw (42) is connected to the slider (41) to drive the slider (41) and the hydraulic brake cylinder (34) hinged thereon to move, in order to compensate for the wear gap of the brake shoe (35). The lead screw (42) is connected to the output end of the motor, and the motor is electrically connected to an operating switch and is filled with explosion-proof material. The lifting trolley (3) is also covered with an explosion-proof structure, which completely seals the potential ignition source on the lifting trolley (3) inside an explosion-proof structure.

2. The explosion-proof lifting and hoisting equipment for confined spaces according to claim 1, characterized in that: The lifting trolley (3) also includes a pair of brake linkages (32) hinged to the base (31), brake shoes (35) provided on the brake linkages (32), and a linkage (36) connecting the tops of the two brake linkages (32) to make them move synchronously; the output end of the hydraulic brake cylinder (34) is connected to the brake linkages (32) through a lever mechanism to drive its action.

3. The explosion-proof lifting and hoisting equipment for confined spaces according to claim 2, characterized in that: The lever mechanism includes a pull rod arm (37), one end of which is hinged to the top of one of the brake linkages (32), and the other end is hinged to the output end of the hydraulic brake cylinder (34); a connecting rod (33) is also hinged on the base (31), and the end of the connecting rod (33) is hinged to the pull rod arm (37) to form a fulcrum.

4. The explosion-proof lifting and hoisting equipment for confined spaces according to claim 3, characterized in that: The lever arm (37) has two hinge points at one end near the brake link (32), which are respectively hinged to the top of the brake link (32) and the link (36).

5. The explosion-proof lifting and hoisting equipment for confined spaces according to claim 1, characterized in that: The base (31) has a strip groove (4), and the slider (41) is slidably disposed in the strip groove (4).

6. The explosion-proof lifting and hoisting equipment for confined spaces according to claim 2, characterized in that: The brake linkage (32) is arc-shaped and symmetrically arranged on the circumference of the brake wheel.

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