Top joint applied to construction hoist

Abstract

The utility model discloses a top section applied to a construction hoist, which relates to the technical field of construction hoists, and comprises four butt joint columns, a frame body is arranged among the four butt joint columns, and a rack is vertically arranged on the frame body; the height of the rack does not exceed two thirds of the height of the frame body, and the top end of the rack is connected with a force-removing rod with a smooth surface, so that after the driving part moves to the top end of the rack, the force-removing rod does not provide an upward meshing structure for the driving part any more; the top of the frame body is further provided with a limiting assembly so that the driving part can stop operating after the lifting bin makes contact with the limiting assembly. According to the device, mechanical protection and electrical protection modes are adopted, the problem that the lifting bin rushes to the top is greatly solved, and the safety performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of construction elevators, and in particular to a top section used in a construction elevator. Background Art

[0002] The top section is the component structure at the top of the construction elevator, which is set at the top of the standard section; the existing top section is equipped with a sensor, which senses the lifting height of the elevator. Once the elevator does not rise to the sensor position at the top of the top section according to the command, that is, when the elevator contacts the sensor, the sensor will transmit an electrical signal to the drive unit on the elevator. At this time, the drive unit stops the rising action to ensure that the elevator cannot break through the sensor and detach from the entire top section. However, in fact, there are certain disadvantages in only using sensors. If the sensor has an electrical failure, the elevator will have a problem of hitting the top, causing the entire elevator to detach from the standard section and the top section, and the safety effect is weak. Utility Model Content

[0003] The purpose of the utility model is to solve the problems raised in the above-mentioned background technology, and then proposes a top section used in a construction elevator.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A top section used in a construction elevator comprises four docking columns, a frame is commonly arranged between the four docking columns, and a rack is vertically arranged on the frame; the height of the rack does not exceed two-thirds of the height of the frame, and a release rod with a smooth surface is connected to the top of the rack so that after the driving part moves to the top of the rack, the release rod no longer provides an upward meshing structure for the driving part; a limit assembly is also provided on the top of the frame so that the driving part stops operating after the lifting compartment contacts the limit assembly.

[0006] Furthermore, the limit assembly includes a fixed plate, a guide rod, a limit seat, a mounting plate, a spring and a travel switch; the fixed plate is arranged on the top of the frame and a guide rod is slidably arranged on it, a limit seat is arranged on the guide rod, a mounting plate is connected to the bottom of the guide rod, a spring is arranged between the mounting plate and the fixed plate, the spring is sleeved on the guide rod, and a travel switch electrically connected to the driving part is arranged at the bottom of the mounting plate so that the driving part stops operating after the lifting warehouse contacts the travel switch; during implementation, when the lifting warehouse continues to move upward and contacts the travel switch, the travel switch will transmit an electrical signal to the driving part and stop the driving part.

[0007] Furthermore, the limit assembly also includes a pressure sensor electrically connected to the driving part. The pressure sensor is arranged at the bottom of the fixing plate and cooperates with the mounting plate to stop the driving part from operating after the mounting plate contacts the travel switch.

[0008] Furthermore, the frame is provided with a plurality of staggered web members, and the arrangement of the web members decomposes part of the stress of the entire frame structure, thereby improving its bearing capacity and structural strength.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model greatly reduces the problem of top collision of the lifting warehouse through mechanical protection and electrical protection, and has better safety effect; when the driving part moves to the top of the rack, the release rod no longer provides an upward meshing structure for the driving part, thereby preventing the lifting warehouse from continuing to move upward under the action of the driving part. If the lifting warehouse still moves upward until it contacts the limit component, at this time, the limit component will transmit an electrical signal to the driving part and stop the driving part from operating, thereby achieving the purpose of secondary protection limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Among them: 1. docking column; 2. frame; 21. belly rod; 3. rack; 4. release rod; 5. limit assembly; 51. fixing plate; 52. guide rod; 53. limit seat; 54. mounting plate; 55. spring; 56. travel switch; 57. pressure sensor. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0014] Refer to the attached Figure 1 As shown, a top section used in a construction elevator includes four docking columns 1, a frame 2 is commonly arranged between the four docking columns 1, and a rack 3 is vertically arranged on the frame 2; the height of the rack 3 does not exceed two-thirds of the height of the frame 2, and a smooth-surfaced release rod 4 is connected to the top of the rack 3 so that after the driving part moves to the top of the rack 3, the release rod 4 no longer provides an upward meshing structure for the driving part, thereby preventing the lifting compartment from continuing to move upward under the action of the driving part; a limit assembly 5 is also provided on the top of the frame 2 so that the driving part stops operating after the lifting compartment contacts the limit assembly 5, thereby achieving a secondary protection purpose.

[0015] During the specific implementation of the device, when the driving part moves to the top of the rack 3, the release rod 4 no longer provides an upward meshing structure for the driving part, thereby preventing the lifting warehouse from continuing to move upward under the action of the driving part. If the lifting warehouse still moves upward, it will contact the limit assembly 5 when it continues to move upward. At this time, the limit assembly 5 will transmit an electrical signal to the driving part and stop the driving part from operating.

[0016] For details, please refer to the attached Figure 1 As shown, the limit assembly 5 includes a fixed plate 51, a guide rod 52, a limit seat 53, a mounting plate 54, a spring 55 and a travel switch 56; the fixed plate 51 is arranged on the top of the frame 2 and the guide rod 52 is slidably arranged on it, the guide rod 52 is provided with a limit seat 53, the bottom of the guide rod 52 is connected to the mounting plate 54, a spring 55 is further arranged between the mounting plate 54 and the fixed plate 51, the spring 55 is sleeved on the guide rod 52, and a travel switch 56 electrically connected to the drive unit is arranged at the bottom of the mounting plate 54 so that the drive unit stops operating after the lifting chamber contacts the travel switch 56; during implementation, when the lifting chamber continues to move upward and contacts the travel switch 56, at this time, the travel switch 56 will transmit an electrical signal to the drive unit and stop the drive unit.

[0017] Among them, refer to the attached Figure 1 As shown, in order to further improve the safety effect of the device, the limit assembly 5 also includes a pressure sensor 57 electrically connected to the driving part. The pressure sensor 57 is arranged at the bottom of the fixed plate 51 and cooperates with the mounting plate 54 to make the driving part stop operating after the mounting plate 54 contacts the travel switch 56.

[0018] Among them, refer to the attached Figure 1 As shown, in order to improve the stability of the frame 2 structure, a plurality of staggered webs 21 are provided on the frame 2. The webs 21 are arranged to decompose part of the stress of the entire frame 2 structure, thereby improving its bearing capacity and structural strength.

[0019] 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 in the specification are only to illustrate 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 protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A top section used in a construction elevator, comprising four docking columns (1), a frame (2) being arranged between the four docking columns (1), and a rack (3) being vertically arranged on the frame (2); the characteristics are: The height of the rack (3) does not exceed two-thirds of the height of the frame (2), and a release rod (4) with a smooth surface is connected to the top of the rack (3) so that after the driving part moves to the top of the rack (3), the release rod (4) no longer provides an upward meshing structure for the driving part; A limit assembly (5) is also provided on the top of the frame (2) so that the driving unit stops operating after the lifting bin contacts the limit assembly (5).

2. The top section used for a construction elevator according to claim 1, characterized in that: The limit assembly (5) comprises a fixing plate (51), a guide rod (52), a limit seat (53), a mounting plate (54), a spring (55) and a travel switch (56); The fixing plate (51) is arranged on the top of the frame (2) and a guide rod (52) is slidably arranged on the fixing plate (51). A limit seat (53) is arranged on the guide rod (52). A mounting plate (54) is connected to the bottom of the guide rod (52). A spring (55) is arranged between the mounting plate (54) and the fixing plate (51). The spring (55) is sleeved on the guide rod (52). A travel switch (56) electrically connected to the driving unit is arranged at the bottom of the mounting plate (54).

3. The top section used for a construction elevator according to claim 2, characterized in that: The limiting assembly (5) further comprises a pressure sensor (57) electrically connected to the driving part, wherein the pressure sensor (57) is arranged at the bottom of the fixing plate (51) and cooperates with the mounting plate (54).

4. The top section used for a construction elevator according to claim 1, characterized in that: The frame (2) is provided with a plurality of staggered webs (21).

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