Small-size crane trolley structure

Abstract

The utility model discloses a small-size crane trolley structure which comprises two trolley plates which are symmetrically arranged and are fixed through a connecting rod and a connecting plate; the fixed pulley is mounted on the connecting plate through a self-adaptive universal shaft, and a groove is formed in the directional pulley; the winding drum is fixed between the trolley plates through a rotating shaft and is driven by a speed reducing motor to rotate; a lifting hook is mounted on the movable pulley assembly, the movable pulley assembly is suspended at the bottom of the trolley plate through a fiber rope, and ascending and descending of the movable pulley assembly are controlled by adjusting the winding and unwinding degree of the fiber rope through rotating and winding of a winding drum. By adjusting the positions of the fixed pulleys, transverse arrangement of the fixed pulleys of a trolley in the prior art is changed into longitudinal arrangement, and the transverse size of the trolley is compressed while the longitudinal size of the trolley is not changed, so that the size is reduced, and the cost is saved; by arranging the fixed pulley controlled by the universal shaft, the fixed pulley adjusts balance in a self-adaptive mode in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the technical field of crane trolleys, in particular to a small-size crane trolley structure. Background Art

[0002] When producing chips or fine parts, it is usually done in a clean room without contact, and cranes are also needed. Clean rooms are expensive, and the cost increases a lot with every square meter of expansion. Therefore, the size of practical cranes in clean rooms needs to be compressed to save costs. The trolleys used by clean room cranes also need to be compressed to save space.

[0003] To this end, the utility model provides a small-size crane trolley structure to solve the above technical problems. Utility Model Content

[0004] Purpose of the utility model: to provide a small-sized crane trolley structure to solve the problems in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A small-sized crane trolley structure, comprising:

[0007] A trolley plate, wherein two trolley plates are symmetrically arranged and the two trolley plates are fixed by a connecting rod and a connecting plate;

[0008] A fixed pulley, the fixed pulley is mounted on the connecting plate through an adaptive universal shaft, and a groove is provided on the fixed pulley;

[0009] The reel is fixed between the trolley plates through a rotating shaft, and the reel is driven to rotate by a reduction motor;

[0010] A movable pulley assembly is provided with a hook, the movable pulley assembly is suspended at the bottom of the trolley plate through a fiber rope, and the rise and fall of the movable pulley assembly is controlled by adjusting the degree of retraction and extension of the fiber rope through rotating winding of a drum.

[0011] Furthermore, the movable pulley assembly includes a fixed shaft, a movable pulley, a limit plate and a limit rod, the movable pulleys are movably arranged on two fixed shafts and limited on the fixed shaft, the movable pulley is provided with a groove for placing the fiber rope, the limit plates are fixedly arranged at both ends of the fixed shaft, and the limit rod is fixed between the two limit plates.

[0012] Furthermore, the diameter of the fixed pulley is slightly smaller than the height and length of the drum.

[0013] Furthermore, both ends of the fiber rope are fixed on the drum, and the fiber rope passes through the grooves of the two movable pulleys respectively and then is hung on the fixed pulley, so that the movable pulley assembly is suspended.

[0014] Furthermore, the trolley also includes a pulley, which is installed on the upper part of the trolley plate through a rotating shaft. The trolley moves linearly on the crane beam through the rotation of the pulley, and the rotation of the pulley is controlled by a motor.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By adjusting the position of the fixed pulley, the horizontal setting of the fixed pulley of the trolley in the prior art is changed to a longitudinal setting, and the lateral size of the trolley is compressed without changing the longitudinal size of the trolley, thereby reducing the size and saving costs; by setting a fixed pulley controlled by a universal joint, the fixed pulley can adaptively adjust the balance during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a side view of the utility model.

[0020] In the figure: 1. trolley plate; 101. connecting rod; 102. connecting plate; 2. fixed pulley; 3. adaptive universal joint; 4. reel; 5. reduction motor; 6. movable pulley assembly; 601. fixed shaft; 602. movable pulley; 603. limit plate; 604. limit rod; 7. fiber rope; 8. pulley; 9. motor. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0022] To this end, the applicant designed Figure 1-3 A small-sized crane trolley structure shown in the figure includes: a trolley plate 1, two symmetrically arranged trolley plates 1 are fixed between the two trolley plates 1 by a connecting rod 101 and a connecting plate 102; a fixed pulley 2, the fixed pulley 2 is installed on the connecting plate 102 through an adaptive universal joint 3, and a groove is provided on the fixed pulley 2; a drum 4, fixed between the trolley plates 1 through a rotating shaft, and the drum 4 is driven to rotate by a reduction motor 5; a movable pulley assembly 6, a hook is installed on the movable pulley assembly 6, the movable pulley assembly 6 is suspended at the bottom of the trolley plate 1 by a fiber rope 7, and the rise and fall of the movable pulley assembly 6 are controlled by rotating and winding the drum 4 to adjust the retraction and extension degree of the fiber rope 7.

[0023] Further optionally, in this embodiment, the movable pulley assembly 6 includes a fixed shaft 601, a movable pulley 602, a limiting plate 603 and a limiting rod 604. The movable pulleys 602 are movably arranged on the fixed shaft 601 at two positions and are limited on the fixed shaft 601. The movable pulley 602 is provided with a groove for placing the fiber rope 7. The limiting plates 603 are fixedly arranged at both ends of the fixed shaft 601, and the limiting rod 604 is fixed between the two limiting plates 603.

[0024] In this embodiment, it is further optional that the diameter of the fixed pulley 2 is slightly smaller than the height and length of the drum 4 .

[0025] In this embodiment, further optional, both ends of the fiber rope 7 are fixed on the drum 4, and the fiber rope 7 passes through the grooves of the two movable pulleys 602 respectively and then hangs on the fixed pulley 2, so that the movable pulley assembly 6 is suspended.

[0026] Further optionally, in this embodiment, the trolley also includes a pulley 8, which is installed on the upper part of the trolley plate 1 through a rotating shaft. The trolley moves linearly on the crane beam through the rotation of the pulley 8, and the pulley 8 is controlled to rotate by the motor 9.

[0027] The present application changes the fixed pulley 2 of the trolley in the prior art from a horizontal setting to a vertical setting by adjusting the position of the fixed pulley 2, thereby compressing the horizontal dimension of the trolley without changing the longitudinal dimension of the trolley, thereby reducing the size and saving costs; by setting the fixed pulley 2 controlled by a universal joint, the fixed pulley 2 can adaptively adjust the balance during the lifting process.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A small-sized crane trolley structure, characterized in that: include: A trolley plate, wherein two trolley plates are symmetrically arranged and the two trolley plates are fixed by a connecting rod and a connecting plate; A fixed pulley, the fixed pulley is mounted on the connecting plate through an adaptive universal shaft, and a groove is provided on the fixed pulley; The reel is fixed between the trolley plates through a rotating shaft, and the reel is driven to rotate by a reduction motor; A movable pulley assembly is provided with a hook, the movable pulley assembly is suspended at the bottom of the trolley plate through a fiber rope, and the rise and fall of the movable pulley assembly is controlled by adjusting the degree of retraction and extension of the fiber rope through rotating winding of a drum.

2. A small-sized crane trolley structure according to claim 1, characterized in that: The movable pulley assembly includes a fixed shaft, a movable pulley, a limit plate and a limit rod. The movable pulleys are movably arranged on the fixed shaft and limited on the fixed shaft. The movable pulley is provided with a groove for placing the fiber rope. The limit plates are fixedly arranged at both ends of the fixed shaft, and the limit rod is fixed between the two limit plates.

3. A small-sized crane trolley structure according to claim 1, characterized in that: The diameter of the fixed pulley is slightly smaller than the height and length of the drum.

4. A small-sized crane trolley structure according to claim 2, characterized in that: Both ends of the fiber rope are fixed on the drum, and the fiber rope passes through the grooves of the two movable pulleys respectively and is hung on the fixed pulley, so that the movable pulley assembly is suspended.

5. A small-sized crane trolley structure according to claim 1, characterized in that: The trolley also includes a pulley, which is installed on the upper part of the trolley plate through a rotating shaft. The trolley moves linearly on the crane beam through the rotation of the pulley, and the rotation of the pulley is controlled by a motor.

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