CN218978288U

CN218978288U - Anti-collision lifting table

Info

Publication number: CN218978288U
Application number: CN202320008572.9U
Authority: CN
Inventors: 孙国平; 占晓君; 刘益生
Original assignee: Changxing Jingshi Technology Co ltd
Current assignee: Changxing Jingshi Technology Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-09
Anticipated expiration: 2033-01-03

Abstract

The utility model relates to the technical field of lifting tables, in particular to an anti-collision lifting table, wherein a telescopic supporting leg driven by a first motor is fixedly arranged at the bottom of a table top, an outer cylinder with an opening at the lower end is fixedly arranged at the lower end of the supporting leg, a pressure sensor is arranged in the upper end of the outer cylinder, an inner cylinder with a closed upper end is inserted in the lower end of the outer cylinder, and a supporting seat is fixedly arranged at the lower end of the inner cylinder; when no external force acts, the lower end of the pressure sensor is propped against the upper end of the inner cylinder due to the action of gravity, when the first motor drives the tabletop to ascend and collide, the pressure born by the pressure sensor is increased, when the pressure born by the pressure sensor exceeds a preset value, a protection mode is triggered, and the controller sends out an instruction to enable the first motor to stop rotating, so that the tabletop is prevented from being continuously ascended and damaged by the lifting table.

Description

Anti-collision lifting table

Technical Field

The utility model relates to the technical field of lifting tables, in particular to an anti-collision lifting table.

Background

Along with the wide application of the table in work, study and life of people, the comfort and convenience requirements of people on the table are higher and higher, so that the table capable of being adjusted in a lifting way is popular with users.

The safety protection performance of the lifting table when meeting the blockage in the lifting process is an important index for guaranteeing the use reliability of the lifting table. The utility model patent with the application number of CN201920483410.4 discloses an anti-collision lifting platform, which comprises a table top, a lifting upright post and a control unit, wherein the control unit is electrically connected with the lifting upright post and controls the lifting of the lifting upright post, an anti-collision protection area is arranged on the lifting platform, a collision detection unit is arranged on the anti-collision protection area and comprises a contact type press switch, the contact type press switch is electrically connected with the control unit, when the lifting platform is collided, the contact type press switch is extruded, the contact type press switch is connected, the control unit controls the lifting upright post to enter a protection mode, and the lifting upright post is prevented from being continuously lifted to cause the damage of the lifting platform.

However, the lifting platform is only in the protection mode when the anti-collision protection area is extruded, but the lifting upright post cannot enter the protection mode when the non-anti-collision protection area is extruded, so that a detection blind area exists, and the protection of the lifting table is not comprehensive enough.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an anti-collision lifting table, wherein a pressure sensor is arranged below a supporting leg so as to eliminate a detection blind area, and the technical problem that a collision detection unit of the existing lifting table has the detection blind area is solved.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the anti-collision lifting table comprises a table top, wherein a telescopic supporting leg driven by a first motor is fixedly arranged at the bottom of the table top, an outer cylinder with an opening at the lower end is fixedly arranged at the lower end of the supporting leg, a pressure sensor is arranged in the upper end of the outer cylinder, an inner cylinder with a closed upper end is inserted in the lower end of the outer cylinder, and a supporting seat is fixedly arranged at the lower end of the inner cylinder; the inner cylinder is internally and vertically slidably provided with a sliding block, the sliding block is fixedly provided with a positioning column which horizontally extends, the inner cylinder is provided with a strip-shaped hole matched with the positioning column, the outer cylinder is provided with a positioning hole for limiting vertical movement between the outer cylinder and the positioning column, the positioning column sequentially penetrates through the strip-shaped hole and the positioning hole, and the positioning column can vertically move along the strip-shaped hole.

As a further improvement, a supporting block is vertically and slidably arranged in the inner cylinder below the sliding block, a screw rod driven to rotate by a second motor is rotatably arranged in the inner cylinder, and the supporting block is in threaded connection with the screw rod.

As a further improvement, the slide block is provided with an avoidance hole for the screw rod to pass through.

As a further improvement, two supporting plates are fixedly installed in the inner cylinder in an up-down opposite mode, two ends of the screw rod are respectively installed on the corresponding supporting plates in a rotating mode through bearings, the second motor is installed in the upper end of the inner cylinder, and one end of the screw rod is connected to a rotating shaft of the second motor through a coupler.

As a further improvement, a spring is connected between the support plate and the slider.

After the technical scheme is adopted, the utility model has the beneficial effects that:

(1) The pressure sensor is arranged in the upper end of the outer cylinder, when no external force acts, the lower end of the pressure sensor is propped against the upper end of the inner cylinder due to the action of gravity, when the first motor drives the tabletop to rise and collide, the pressure born by the pressure sensor is increased, when the pressure born by the pressure sensor exceeds a preset value, a protection mode is triggered, the controller sends out an instruction to stop rotating the first motor, the tabletop is prevented from continuously rising to cause the damage of the lifting table, and the pressure sensor is arranged between the outer cylinder and the inner cylinder below the supporting legs, so that the protection mode can be triggered no matter which area is collided in the tabletop rising process, thereby eliminating detection dead zones and protecting the lifting table more comprehensively;

(2) This application is when needs place the heavy object at the desktop, and accessible second motor and lead screw drive supporting shoe upward movement drive the slider and upwards move in step after the bottom of supporting shoe contact slider, and the slider passes through the reference column and drives the urceolus for the inner tube upward movement, and urceolus driving pressure sensor breaks away from the upper end of inner tube, and pressure sensor does not receive the extrusion to avoid the desktop to place the mistake after the heavy object and trigger protection mode, also avoided pressure sensor excessively to receive the pressure damage simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of a support leg according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of an outer tub according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a pressure sensor according to an embodiment of the present utility model disengaged from the upper end of the inner barrel.

In the figure: 1-a desktop; 2-a first motor; 3-supporting legs; 4-a lower cylinder; 5-an upper cylinder; 6-an outer cylinder; 7-a threaded pipe; 8-a threaded rod; 9-a drive box; 10-a pressure sensor; 11-an inner cylinder; 12-a supporting seat; 13-a controller; 14-a slider; 15-positioning columns; 16-bar-shaped holes; 17-positioning holes; 18-supporting blocks; 19-a second motor; 20-screw rod; 21-a support plate; 22-spring.

Detailed Description

As shown in fig. 1 to 4, an anti-collision lifting table comprises a table top 1, a telescopic supporting leg 3 driven by a first motor 2 is fixedly arranged at the bottom of the table top 1, two supporting legs 3 are arranged left and right, each supporting leg 3 comprises a lower cylinder 4 and an upper cylinder 5 inserted into the upper end of the lower cylinder 4, the upper end of the upper cylinder 5 is fixedly arranged at the bottom of the table top 1 through threads, an outer cylinder 6 with an opening at the lower end is fixedly arranged at the lower end of the lower cylinder 4, as shown in fig. 2, the upper end of the outer cylinder 6 is inserted into the lower cylinder 4, a threaded pipe 7 positioned in the lower cylinder 4 is fixedly arranged at the top of the outer cylinder 6 through bolts, a threaded rod 8 matched with the threaded pipe 7 is rotatably arranged in the upper cylinder 5 through a bearing, and the threaded rod 8 acts on the threaded pipe 7 when rotating so as to drive the upper cylinder 5 to move up and down along the lower cylinder 4, so as to drive the table top 1 to lift or lower. The bottom fixed mounting who is located desktop 1 between two supporting legs 3 has drive box 9, and drive box 9 internal rotation is installed the transmission shaft of transversely extending, is connected through the gear pair between the both ends of transmission shaft and two threaded rods 8 respectively, and first motor 2 installs on drive box 9, is connected through the gear pair between first motor 2 and the transmission shaft, and first motor 2 during operation drives the transmission shaft and rotates, and then the transmission shaft drives two threaded rods 8 and rotate to adjust the height of desktop 1.

As shown in fig. 3, a pressure sensor 10 is mounted in the upper end of the outer cylinder 6 by bolts, an inner cylinder 11 with a closed upper end is inserted in the lower end of the outer cylinder 6, and a supporting seat 12 is fixedly mounted at the lower end of the inner cylinder 11 by bolts. The pressure sensor 10 and the first motor 2 are electrically connected with the controller 13, when no external force acts, the lower end of the pressure sensor 10 is propped against the upper end of the inner cylinder 11 due to the action of gravity, when the first motor 2 drives the tabletop 1 to rise and is impacted, the pressure born by the pressure sensor 10 is increased, when the pressure born by the pressure sensor 10 exceeds a preset value, a protection mode is triggered, and the controller 13 sends out an instruction to enable the first motor 2 to stop rotating, so that the tabletop 1 is prevented from continuously rising to cause damage to the lifting table. Because the pressure sensor 10 is arranged between the outer cylinder 6 and the inner cylinder 11 below the supporting leg 3, the protection mode can be triggered no matter which area is collided in the lifting process of the tabletop 1, so that the detection blind area is eliminated, and the lifting table is more comprehensively protected.

The sliding block 14 is vertically and slidably arranged in the inner cylinder 11, the section of the inner cylinder 11 is square, the sliding block 14 can be prevented from rotating in the inner cylinder 11, the sliding block 14 is fixedly provided with the horizontally extending positioning columns 15, two positioning columns 15 are oppositely arranged left and right, one end of each positioning column 15 is provided with external threads, each positioning column 15 is screwed on the sliding block 14, the inner cylinder 11 is provided with a strip-shaped hole 16 matched with each positioning column 15, the outer cylinder 6 is provided with a positioning hole 17 for limiting the vertical movement between the outer cylinder 6 and each positioning column 15, the positioning columns 15 sequentially penetrate through the strip-shaped holes 16 and the positioning holes 17, and the positioning columns 15 can vertically move along the strip-shaped holes 16. When the outer cylinder 6 moves up and down relative to the inner cylinder 11, the positioning column 15 can be driven to move up and down in the strip-shaped hole 16, so that the outer cylinder 6 and the inner cylinder 11 are limited to be completely separated through the cooperation of the positioning column 15 and the strip-shaped hole 16.

The inner cylinder 11 positioned below the sliding block 14 is internally and vertically provided with a supporting block 18 in a sliding manner, the inner cylinder 11 is internally and rotationally provided with a screw rod 20 driven to rotate by a second motor 19, specifically, the inner cylinder 11 is internally and vertically provided with two supporting plates 21 in a fixed manner, the two supporting plates 21 are respectively and fixedly arranged in the inner cylinder 11 through bolts, two ends of the screw rod 20 are provided with polished rods, two ends of the screw rod 20 are respectively and rotationally arranged on the corresponding supporting plates 21 through bearings, the second motor 19 is arranged in the upper end of the inner cylinder 11 through bolts, and one end of the screw rod 20 is connected to a rotating shaft of the second motor 19 through a coupling. The supporting block 18 is connected to the screw rod 20 in a threaded manner, and the slide block 14 is provided with an avoidance hole for the screw rod 20 to pass through.

Specifically, the second motor 19 drives the screw rod 20 to rotate around a specific direction, the screw rod 20 drives the supporting block 18 to move downwards, so that the sliding block 14 and the supporting block 18 are kept in a separated state, the supporting block 18 has no acting force on the sliding block 14, the lower end of the pressure sensor 10 abuts against the upper end of the inner cylinder 11 under the action of gravity, and as shown in fig. 3, a protection mode is normally triggered when the table top 1 is impacted in the rising process; or when the heavy objects need to be placed on the desktop 1, the second motor 19 can drive the screw rod 20 to reversely rotate, the screw rod 20 drives the supporting block 18 to upwards move, the supporting block 14 is driven to synchronously upwards move after the supporting block 18 contacts the bottom of the sliding block 14, the sliding block 14 drives the outer cylinder 6 to upwards move relative to the inner cylinder 11 through the positioning column 15, the outer cylinder 6 drives the pressure sensor 10 to be separated from the upper end of the inner cylinder 11, as shown in fig. 4, the pressure sensor 10 is not extruded, and therefore the mistaken triggering of a protection mode after the heavy objects are placed on the desktop 1 is avoided, and meanwhile, the excessive compression damage of the pressure sensor 10 is avoided.

A spring 22 is connected between the upper supporting plate 21 and the sliding block 14, the spring 22 is sleeved on the screw rod 20, the spring 22 pushes the sliding block 14 and the outer cylinder 6 downwards, and random up-down movement between the outer cylinder 6 and the inner cylinder 11 is avoided when the sliding block 14 and the supporting block 18 are in a separated state.

The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an anticollision lift table, includes the desktop, the bottom fixed mounting of desktop has the scalable supporting leg by first motor drive, its characterized in that: an outer cylinder with an opening at the lower end is fixedly arranged at the lower end of the supporting leg, a pressure sensor is arranged in the upper end of the outer cylinder, an inner cylinder with a closed upper end is inserted in the lower end of the outer cylinder, and a supporting seat is fixedly arranged at the lower end of the inner cylinder; the inner cylinder is internally and vertically slidably provided with a sliding block, the sliding block is fixedly provided with a positioning column which horizontally extends, the inner cylinder is provided with a strip-shaped hole matched with the positioning column, the outer cylinder is provided with a positioning hole for limiting vertical movement between the outer cylinder and the positioning column, the positioning column sequentially penetrates through the strip-shaped hole and the positioning hole, and the positioning column can vertically move along the strip-shaped hole.

2. An anti-collision lifting table as defined in claim 1, wherein: the inner cylinder is located below the sliding block, a supporting block is vertically and slidably arranged in the inner cylinder, a screw rod driven to rotate by a second motor is rotatably arranged in the inner cylinder, and the supporting block is in threaded connection with the screw rod.

3. An anti-collision lifting table as defined in claim 2, wherein: the slide block is provided with an avoidance hole for the screw rod to pass through.

4. An anti-collision lifting table as defined in claim 2, wherein: two support plates are fixedly installed in the inner cylinder in an up-down opposite mode, two ends of the screw rod are installed on the corresponding support plates in a rotating mode through bearings respectively, the second motor is installed in the upper end of the inner cylinder, and one end of the screw rod is connected to a rotating shaft of the second motor through a coupler.

5. An anti-collision lifting table as defined in claim 4, wherein: and a spring is connected between the supporting plate and the sliding block which are positioned above the sliding block.