CN217323265U

CN217323265U - Scissor telescopic lifting platform

Info

Publication number: CN217323265U
Application number: CN202220373399.8U
Authority: CN
Inventors: 项明龙; 陆晓峰; 李明轩; 肖宝宇; 姚晟; 朱晓磊; 郭豫鹏
Original assignee: Jiangsu Tianpeng Petrochemical Technology Co ltd
Current assignee: Jiangsu Tianpeng Petrochemical Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-08-30
Anticipated expiration: 2032-02-23

Abstract

A scissor telescopic lifting platform comprises a base plate; a bracket is fixedly arranged in the middle of the top surface of the substrate; two parallel guide rails are horizontally and fixedly arranged on the bracket; each guide rail is provided with a scissor telescopic mechanism; a through groove is formed downwards in the position, corresponding to the scissor telescopic mechanism, of the top surface of the base plate; the bottom ends of the two scissor telescopic mechanisms penetrate through the through groove and are fixedly connected with the same mounting plate through the synchronous mechanism; a winch is fixedly arranged on the top surface of the base plate; the top surface of the bracket is fixedly provided with a support; a fixed pulley is fixedly arranged on the support; a steel cable is wound on the winch; one end of the steel cable, which is far away from the winch, winds the fixed pulley and is fixedly connected with the synchronizing mechanism; the utility model discloses drive power direct action on vertical, reduced the loss of effort to stop that can be more accurate at the appointed height, the speed of removal is more stable.

Description

Scissor telescopic lifting platform

Technical Field

The utility model relates to a lift platform technical field especially relates to a cut flexible lift platform of fork.

Background

The hydrogenation reactor is a piece of very important equipment in organic chemistry laboratories and actual production processes, and can be used as a container for hydrogenation reaction and also can be used in occasions where liquid and gas need to be fully mixed. Hydrogenation reactors are commonly used for hydrogenating the most difficult to utilize heavy fractions in the petroleum industry, namely, residual oil, which can be converted into light oil by hydrogenation, thereby producing gasoline, diesel oil, and the like; the reinforced reactor is bulky, has a diameter of 5 meters and can reach a height of dozens of meters; catalyst particles are required to be uniformly filled into the reactor rapidly and controllably; because catalyst bed layers have different height requirements, a lifting device needs to be arranged; but because the bottom fixed mounting of elevating gear has rotary device to be used for the even spill of catalyst, so its bottom has kinetic energy, and the moment of torsion that utilizes the rope to go up and down and can not resist rotary device production can make the lift platform also follow the rotation, and this just makes the lift platform unable normal work.

Although lifting by using the scissor telescopic mechanism can realize that the lifting platform is firmer and can resist the torque of the rotating device, the existing scissor telescopic lifting mechanism is generally that the scissor strips on one side are fixed by a hinged seat, and the scissor strips on the other side are pushed in the horizontal direction, so that the side length of the whole scissor telescopic mechanism is long, but the scissor telescopic mechanism is only suitable for the scissor telescopic mechanism with small length; and, it is very difficult to control vertical flexible length through the horizontal displacement of one side scissors strip, can appear the inhomogeneous condition of change speed, and can't be fast accurate stop in needs height.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cut flexible lift platform of fork to solve the problem that exists among the above-mentioned prior art.

A scissor telescopic lifting platform comprises a base plate; a bracket is fixedly arranged in the middle of the top surface of the substrate; two parallel guide rails are horizontally and fixedly arranged on the bracket; each guide rail is provided with a scissor telescopic mechanism; a through groove is formed downwards in the position, corresponding to the scissor telescopic mechanism, of the top surface of the base plate; the bottom ends of the two scissor telescopic mechanisms penetrate through the through groove and are fixedly connected with the same mounting plate through a synchronous mechanism; a winch is fixedly arranged on the top surface of the base plate; the top surface of the bracket is fixedly provided with a support; a fixed pulley is fixedly arranged on the support; a steel cable is wound on the winch; and one end of the steel cable, which is far away from the winch, winds the fixed pulley and is fixedly connected with the synchronizing mechanism.

Preferably, the scissor telescopic mechanism comprises two sliding blocks arranged on the guide rail in a sliding manner and a scissor rack; two scissor strips at the top end of the scissor rack are respectively hinged with the bottom ends of the two sliding blocks; and the two scissor strips at the bottom end of the scissor rack are fixedly connected with the synchronizing mechanism.

Preferably, the synchronizing mechanism comprises two parallel supporting plates vertically and fixedly connected to the mounting plate; two rotating shafts are rotatably arranged between the two supporting plates; gears are fixedly sleeved on the outer walls of the two rotating shafts; the two gears are identical and meshed; two scissor strips at the bottom end of the scissor rack are fixedly connected with the outer walls of the two rotating shafts respectively; the steel cable is fixedly connected with the top end of any one support plate.

Preferably, the shaft joints of the scissor strips positioned at the same height in the middle of the two scissor racks are fixedly connected through a connecting shaft; one end of the connecting shaft penetrates through the fork shearing frame and is horizontally and fixedly connected with a limiting ring; the wire rope is limited in the limiting ring.

Preferably, the guide rail comprises a transverse plate and a vertical plate; the top end of the vertical plate is fixedly connected with the bracket, and the bottom end of the vertical plate is fixedly connected with the top surface of the transverse plate; the top surface of the sliding block is provided with a sliding chute matched with the guide rail; a plurality of wheel grooves are formed in the plane opposite to the top surface of the transverse plate in the sliding groove; the roller is fixedly arranged in the wheel groove; the roller is abutted against the transverse plate.

Preferably, a stop block is fixedly connected to the guide rail; the two sliding blocks are symmetrically arranged on two sides of the stop block.

Preferably, one side of the sliding block, which is far away from the stop block, is fixedly connected with the side wall of the bracket through a tension spring.

Preferably, the area of the horizontal cross section of the through groove is larger than the area of the mounting plate.

The utility model discloses a following technological effect:

1. the utility model discloses with drive power direct action on vertical, can reduce the loss of effort with the effectual utilization of drive power, practiced thrift equipment cost.

2. The utility model discloses a length of control steel cable and then the length of control scissors fork telescopic machanism to stop that can be more accurate in the height that needs.

3. The utility model discloses can control lift platform's translation rate through the rotational speed of control hoist engine, make the speed of removal more stable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an axial view of the connection shaft, fork frame and cable of the present invention;

FIG. 3 is a side view of the inner structure of the slider and the guide rail of the present invention;

fig. 4 is a side view of the synchronizing mechanism of the present invention.

Wherein:

1. a substrate; 2. a support; 3. a guide rail; 4. a through groove; 5. mounting a plate; 6. a winch; 7. a support; 8. a fixed pulley; 9. a wire rope; 10. a slider; 11. a fork shearing frame; 12. a support plate; 13. a rotating shaft; 14. a gear; 15. a connecting shaft; 16. a limiting ring; 17. a transverse plate; 18. a vertical plate; 19. a chute; 20. a wheel groove; 21. a roller; 22. a stopper; 23. a tension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-4, a scissor telescopic lifting platform comprises a base plate 1; the middle part of the top surface of the substrate 1 is fixedly provided with a bracket 2; two parallel guide rails 3 are horizontally and fixedly arranged on the bracket 2; each guide rail 3 is provided with a scissor telescopic mechanism; a through groove 4 is formed downwards at the position of the top surface of the base plate 1 corresponding to the scissor telescopic mechanism; the bottom ends of the two scissor telescopic mechanisms penetrate through the through groove 4 and are fixedly connected with the same mounting plate 5 through the synchronous mechanism; the top surface of the base plate 1 is fixedly provided with a winch 6; a support 7 is fixedly arranged on the top surface of the bracket 2; a fixed pulley 8 is fixedly arranged on the support 7; a steel cable 9 is wound on the winch 6; one end of the steel cable 9 far away from the winch 6 is wound around the fixed pulley 8 and is fixedly connected with the synchronizing mechanism.

The base plate 1 is fixedly arranged at the opening at the top of a hydrogenation reactor (not shown in the figure), and the bottom surface of the mounting plate 5 can be fixedly provided with a rotating device (not shown in the figure); two scissor telescopic machanisms can be simultaneously through leading to groove 4, and hoist engine 6 drives mounting panel 5 through steel cable 9 and reciprocates, and scissor telescopic machanism also can be along with flexible to can control mounting panel 5's vertical motion through the rotational speed of controlling hoist engine 6, and realize uniform motion, through the length of controlling steel cable 9, and then control mounting panel 5's height, can realize stopping at appointed high accuracy.

In a further optimized scheme, the scissor telescopic mechanism comprises two sliders 10 arranged on the guide rail 3 in a sliding manner and a scissor rack 11; two scissor strips at the top end of the scissor rack 11 are respectively hinged with the bottom ends of the two sliders 10; two scissor strips at the bottom end of the scissor rack 11 are fixedly connected with the synchronizing mechanism.

The fork shearing frame 11 is formed by hinging a plurality of fork shearing strips, belongs to the prior art and is applied to various lifting platforms; in the process of extending and retracting the fork frame 11, the sliding block 10 can slide on the guide rail 3, so that the fork frame can adapt to the fork strips with different angles; the two sliders 10 can slide on the guide rail 3, so that the center position can be prevented from being deviated, the steel cable 9 is always positioned in the vertical center plane of the fork shearing frame 11, and the stability of vertical movement is ensured; a common fork shearing deep locking mechanism is characterized in that one side of the fork shearing deep locking mechanism is fixedly hinged, and the other side of the fork shearing deep locking mechanism is arranged in a sliding manner, so that a vertical central shaft can deviate in the lifting process.

In a further optimized scheme, the synchronizing mechanism comprises two parallel supporting plates 12 which are vertically and fixedly connected to the mounting plate 5; two rotating shafts 13 are rotatably arranged between the two supporting plates 12; the outer walls of the two rotating shafts 13 are fixedly sleeved with gears 14; the two gears 14 are identical and meshed; two scissor strips at the bottom end of the scissor rack 11 are fixedly connected with the outer walls of the two rotating shafts 13 respectively; the steel cable 9 is fixedly connected with the top end of any supporting plate 12.

Two pivot 13 symmetries set up and are parallel to each other, and two pivot 13 are located same height, and two gears 14 can synchronous motion, can further guarantee that mounting panel 5 is in the horizontality all the time, increase the fastness of structure.

In a further optimized scheme, the joints of the scissor strips at the same height at the middle parts of the two scissor frames 11 are fixedly connected through a connecting shaft 15; one end of the connecting shaft 15 penetrates through the fork-cutting frame 11 and is horizontally and fixedly connected with a limiting ring 16; the wire rope 9 is confined within a stop collar 16.

Two fork frames 11 in the two fork telescopic mechanisms are the same; two mutually crossed scissor strips in the middle of the two scissor frames 11 are formed by the shaft connection of the same connecting shaft 15, so that the two scissor frames 11 can be connected together, and the structural firmness is improved; the stop ring 16 allows the wire rope 9 and the scissor housing 11 to be constrained to each other, so that the scissor housing 11 does not bend during vertical movement and is always in a central position.

In a further optimized scheme, the guide rail 3 comprises a transverse plate 17 and a vertical plate 18; the top end of the vertical plate 18 is fixedly connected with the bracket 2, and the bottom end of the vertical plate 18 is fixedly connected with the top surface of the transverse plate 17; the top surface of the slide block 10 is provided with a sliding groove 19 matched with the guide rail 3; a plurality of wheel grooves 20 are formed in the plane, opposite to the top surface of the transverse plate 17, in the sliding groove 19; a roller 21 is fixedly arranged in the wheel groove 20; the roller 21 abuts against the cross plate 17.

Because the pulling force generated by the hoist 6 is not directly applied to the slider 10, but the telescopic fork 11 drives the slider 10 to move horizontally, if the friction force between the slider 10 and the guide rail 3 is smaller, the better, and the friction force generated by rolling is smaller than that generated by sliding, the roller 21 is arranged in the slider 10 and is in rolling contact with the guide rail 3, so that the friction force can be reduced, and the slider 10 can move horizontally more easily.

In a further optimized scheme, a stop block 22 is fixedly connected with the guide rail 3; the two sliders 10 are symmetrically arranged on two sides of the stop block 22; one of the sliders 10 can be prevented from sliding on the other half of the guide rail 3, and the position can be prevented from being shifted.

In a further optimized scheme, one side of the slide block 10, which is far away from the stop block 22, is fixedly connected with the side wall of the bracket 2 through a tension spring 23; when the fork frame 11 is in the longest stretching state, that is, the lowest position of the mounting plate 5, the fork strip at the top end of the fork frame 11 is almost perpendicular to the guide rail 3, at this time, if the mounting plate 5 is pulled upwards by the cable 9, the slider 10 is subjected to a small horizontal acting force, so that the slider 10 is not easy to slide, and the device is easy to damage, and the tension spring 23 can pull the slider 10 towards the horizontal direction under the condition that the slider 10 is subjected to the minimum force, that is, the pulling force generated by the cable 9 is equal to the sum of the weights below the mounting plate and the mounting plate, so as to assist the slider 10 to slide, thereby enabling the mounting plate 5 at the lowest point to move upwards more smoothly.

In a further optimized scheme, the area of the horizontal section of the through groove 4 is larger than that of the mounting plate 5; the mounting plate 5 can pass through and rise above the substrate 1, and manual operation is carried out.

The working principle is as follows: the base plate 1 is fixedly installed at the opening at the top of the hydrogenation reactor, the rotating device is installed on the installation plate 5, the winch 6 is started, the installation plate 5 is placed at a constant speed to a specified height, and catalyst spraying operation is carried out, at the moment, the fork shearing frame 11, the synchronizing mechanism, the steel cable 9 and the limiting ring 16 all have the same effect to guarantee the firmness of the device structure, and therefore torque generated by the rotating device can be resisted.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. The utility model provides a cut flexible lift platform of fork which characterized in that includes: a substrate (1); a bracket (2) is fixedly arranged in the middle of the top surface of the substrate (1); two parallel guide rails (3) are horizontally and fixedly arranged on the bracket (2); a scissor telescopic mechanism is arranged on the guide rail (3); a through groove (4) is formed downwards in the position, corresponding to the scissor telescopic mechanism, of the top surface of the base plate (1); the bottom ends of the two scissor telescopic mechanisms penetrate through the through groove (4) and are fixedly connected with a same mounting plate (5) through a synchronous mechanism; a winch (6) is fixedly arranged on the top surface of the base plate (1); a support (7) is fixedly arranged on the top surface of the bracket (2); a fixed pulley (8) is fixedly arranged on the support (7); a steel cable (9) is wound on the winch (6); one end, far away from the winch (6), of the steel cable (9) winds the fixed pulley (8) and is fixedly connected with the synchronizing mechanism.

2. The scissor telescopic lifting platform of claim 1, wherein: the scissor telescopic mechanism comprises two sliding blocks (10) arranged on the guide rail (3) in a sliding manner and a scissor rack (11); two scissor strips at the top end of the scissor rack (11) are respectively hinged with the bottom ends of the two sliding blocks (10); and the two scissor strips at the bottom end of the scissor rack (11) are fixedly connected with the synchronizing mechanism.

3. The scissor telescopic lifting platform of claim 2, wherein: the synchronous mechanism comprises two parallel supporting plates (12) which are vertically and fixedly connected to the mounting plate (5); two rotating shafts (13) are rotatably arranged between the two supporting plates (12); gears (14) are fixedly sleeved on the outer walls of the two rotating shafts (13); the two gears (14) are identical and meshed; two scissor strips at the bottom end of the scissor rack (11) are fixedly connected with the outer walls of the two rotating shafts (13) respectively; the steel cable (9) is fixedly connected with the top end of any one of the supporting plates (12).

4. A scissor telescopic lift platform according to claim 3, wherein: the shaft joints of the fork shearing strips positioned at the same height in the middle parts of the two fork shearing frames (11) are fixedly connected through a connecting shaft (15); one end of the connecting shaft (15) penetrates through the fork shearing frame (11) and is horizontally and fixedly connected with a limiting ring (16); the steel cable (9) is defined in the stop collar (16).

5. The scissor telescopic lifting platform of claim 4, wherein: the guide rail (3) comprises a transverse plate (17) and a vertical plate (18); the top end of the vertical plate (18) is fixedly connected with the bracket (2), and the bottom end of the vertical plate (18) is fixedly connected with the top surface of the transverse plate (17); the top surface of the sliding block (10) is provided with a sliding groove (19) matched with the guide rail (3); a plurality of wheel grooves (20) are formed in the plane opposite to the top surface of the transverse plate (17) in the sliding groove (19); a roller (21) is fixedly arranged in the wheel groove (20); the roller (21) is abutted against the transverse plate (17).

6. The scissor telescopic lifting platform of claim 5, wherein: a stop block (22) is fixedly connected with the guide rail (3); the two sliding blocks (10) are symmetrically arranged on two sides of the stop block (22).

7. The scissor telescopic lifting platform of claim 6, wherein: one side of the sliding block (10) far away from the stop block (22) is fixedly connected with the side wall of the support (2) through a tension spring (23).

8. The scissor telescopic lifting platform of claim 6, wherein: the area of the horizontal section of the through groove (4) is larger than that of the mounting plate (5).