Door machine encoder signal feedback device

Abstract

A portal crane encoder signal feedback device comprises a portal crane body, a walking wheel arranged on the lower portion of the portal crane body, a speed reducer arranged on one side of the walking wheel and used for driving the walking wheel to walk, a gear rotating shaft arranged on the speed reducer and extending to the outside of a shell of the speed reducer and a gear rotating shaft arranged on the speed reducer and extending to the outside of the shell of the speed reducer. A shell fixedly connected with the speed reducer is arranged on the outer side of the gear rotating shaft, a concentric rotation assembly synchronously connected with an output shaft of the encoder is arranged in the shell, and a protection assembly capable of being pulled is arranged on the upper portion of the shell. The encoder is installed on the output shaft of the speed reducer through the concentric rotation assembly, a series of problems caused by the slipping defect of the encoder are fundamentally solved, deviation between walking data and actual walking data in the working process is reduced, the measurement accuracy of the encoder is better guaranteed, and the working efficiency is improved. And meanwhile, the protection assembly is arranged, so that the probability that the encoder is damaged due to external factors is better reduced.

Description

Technical Field

[0001] The utility model relates to the field of mobile gantry cranes, in particular to a gantry crane encoder signal feedback device. Background Art

[0002] A gantry crane is a device for lifting and lowering inspection gates. In order to monitor the travel distance of the gantry crane when it moves left and right, an encoder is usually installed on the travel wheel of the gantry crane.

[0003] The existing encoder installation method usually adopts a wheel installed on the encoder output shaft, and then the wheel is tightly attached to the travel wheel. When the travel wheel rotates, the encoder wheel moves with it due to the friction generated between the encoder wheel and the travel wheel. During operation, the encoder wheel often slips. After going back and forth several times, the gantry machine cannot return to the set zero position, and as the number of operations increases, the gantry machine deviates further from the set zero point. If this zero point is set as the electrical limit of the gantry machine, then the limit protection cannot be truly achieved due to the large deviation, and there will be serious safety hazards, which may cause direct damage to the equipment on the gantry machine and cause unnecessary economic losses. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a door machine encoder signal feedback device.

[0005] The utility model is realized through the following technical solutions:

[0006] A gantry crane encoder signal feedback device comprises a gantry crane body, a traveling wheel at the lower part of the gantry crane body, a reducer for driving the gantry crane body to travel is arranged on one side of the traveling wheel, a gear shaft extending to the outside of its shell is arranged on the reducer, a shell connected and fixed to the reducer is arranged on the outside of the gear shaft, a concentric rotating assembly synchronously connected to the encoder output shaft is arranged inside the shell, and a pull-out protective assembly is arranged on the upper part of the shell.

[0007] Further optionally, the concentric rotating assembly includes a rotating bracket, a front end surface of the rotating bracket is provided with a plurality of toggle rods clamped in the tooth grooves on the gear shaft, and a center axis is provided in the middle of the rear end surface of the rotating bracket, and the center axis extends upward and is connected and fixed to the encoder output shaft.

[0008] Further optionally, a swivel groove is opened inside the shell, and the swivel bracket extends outward into the swivel groove and is connected to the swivel support.

[0009] Further optionally, the encoder is supported and fixed inside the housing by a connecting bracket.

[0010] Further optionally, the protection component includes a protection cover fixed on the end face of the shell, a cavity is opened inside the protection cover and a rotating shaft is arranged at the center of the top end of the protection cover, and a shell rotating around the center of the rotating shaft is arranged in the cavity.

[0011] Further optionally, the protective cover is hingedly fixed to the rotating shell via a rotating shaft at the top.

[0012] Compared with the existing technology, the beneficial effects of the utility model are: the utility model fundamentally solves a series of problems caused by the encoder slip defect by installing the encoder on the output shaft of the reducer through a concentric rotating component, reduces the deviation between the walking data during work and the actual walking data, better ensures the accuracy of the encoder measurement, and at the same time, a protective component is provided to better reduce the probability of the encoder being damaged due to external factors. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a partial enlarged schematic diagram;

[0015] Figure 3 yes Figure 2 A partial enlarged schematic diagram of

[0016] Figure 4 yes Figure 3 Schematic diagram of local section;

[0017] In the figure: gantry machine body 1, reducer 2, gear shaft 3, housing 4, protective cover 41, rotary housing 42, rotary groove 6, rotary bracket 7, central shaft 8, encoder 9, toggle rod 10, connecting bracket 11. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:

[0019] like Figure 1 , 2 As shown, a gantry crane encoder signal feedback device includes a gantry crane body 1, a traveling wheel at the lower part of the gantry crane body 1, a reducer 2 for driving the traveling thereof is arranged on one side of the traveling wheel, a gear shaft 3 extending to the outside of the shell is arranged on the outer side of the gear shaft 3 and a shell 4 connected and fixed to the reducer 2 is arranged, a concentric rotating assembly synchronously connected to the output shaft of the encoder 9 is arranged inside the shell 4, and a pull-out protective assembly is arranged on the upper part of the shell 4.

[0020] like Figure 2 , 3As shown in , 4, the concentric rotating assembly includes a rotating bracket 7, a front end surface of the rotating bracket 7 is provided with a plurality of toggle rods 10 which are clamped in the tooth grooves on the gear shaft 3, a central shaft 8 is provided in the middle of the rear end surface of the rotating bracket 7, and the central shaft 8 extends upward and is connected and fixed to the output shaft of the encoder 9.

[0021] like Figure 3 , 4 As shown, a swivel groove 6 is provided inside the housing 4, and a swivel bracket 7 extends outwardly into the swivel groove 6 and is rotatably supported and connected thereto.

[0022] like Figure 2 , 4 As shown, the encoder 9 is supported and fixed inside the housing 4 via a connecting bracket 11 .

[0023] like Figure 2 , 3 As shown in FIG. 4 , the protection assembly includes a protection cover 41 fixed on the end face of the shell 4, a cavity is opened inside the protection cover 41 and a rotating shaft is arranged at the center of the top end of the protection cover 41, and a shell 42 rotating around the center of the rotating shaft is arranged in the cavity.

[0024] like Figure 2 , 3 As shown in Figure 4, the protective cover 41 and the rotating shell 42 are hinged and fixed by the rotating shaft at the top.

[0025] The implementation principle of a door machine encoder signal feedback device in the embodiment of the present application is:

[0026] When the gantry machine body 1 moves left and right, the reducer 2 drives its wheels to move, and the gear shaft 3 in the reducer 2 rotates. When the gear shaft 3 rotates, it drives the slewing bracket 7 to rotate synchronously inside the shell 4. When the slewing bracket 7 rotates, the central shaft 8 also rotates. At the same time, the central shaft 8 drives the encoder 9 to rotate coaxially. At this time, the walking distance collected by the encoder 9 is consistent with the moving distance of the gantry machine body 1, which reduces the deviation between the walking data and the actual walking data during work, and better ensures the accuracy of the encoder measurement;

[0027] At the same time, when the gantry crane is running, the rotating shell 42 is pulled, the rotating shell 42 will be pulled out of the protective cover 41, and rotate with the top rotating shaft as the origin, and stop rotating after rotating until it fits with the other end of the protective cover 41. At this time, the protective cover 41 and the rotating shell 42 will form a cylindrical cavity, thereby protecting its concentric rotating components.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gantry crane encoder signal feedback device, comprising a gantry crane body (1), a running wheel at the lower part of the gantry crane body (1), a reducer (2) for driving the running wheel to run is arranged on one side of the running wheel, and a gear shaft (3) extending to the outside of the housing is arranged on the running wheel, characterized in that: A housing (4) connected and fixed to the reducer (2) is arranged outside the gear shaft (3), a concentric rotating assembly synchronously connected to the output shaft of the encoder (9) is arranged inside the housing (4), and a retractable protective assembly is arranged on the upper part of the housing (4).

2. A door machine encoder signal feedback device according to claim 1, characterized in that: The concentric rotary assembly comprises a rotary bracket (7), a front end surface of the rotary bracket (7) is provided with a plurality of toggle rods (10) which are clamped in tooth grooves on the gear shaft (3), and a central shaft (8) is provided in the middle of the rear end surface of the rotary bracket (7), and the central shaft (8) extends upward and is connected and fixed to the output shaft of the encoder (9).

3. A door machine encoder signal feedback device according to claim 2, characterized in that: A swivel groove (6) is provided inside the shell (4), and the swivel bracket (7) extends outwardly into the swivel groove (6) and is connected to the swivel support.

4. The door machine encoder signal feedback device according to claim 2, characterized in that: The encoder (9) is supported and fixed inside the housing (4) via a connecting bracket (11).

5. The door machine encoder signal feedback device according to claim 1, characterized in that: The protection assembly comprises a protection cover (41) fixed on the end surface of the shell (4), a cavity is provided inside the protection cover (41) and a rotating shaft is arranged at the center of the top end of the protection cover (41), and a shell (42) is arranged in the cavity and rotates around the center of the rotating shaft.

6. A door machine encoder signal feedback device according to claim 5, characterized in that: The protective cover (41) and the rotating shell (42) are hinged and fixed via a rotating shaft at the top.

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