Safety prop for barrier-free lifting platforms

Abstract

The utility model relates to a safe pillar of barrier-free lifting platform, the safe pillar is arranged between the tower assembly and the lifting platform of barrier-free lifting platform, and the safe pillar comprises a pillar body, a safety linkage device arranged at the upper end of the pillar body, a reset mechanism arranged near the lower side of the safety linkage device and an opening pillar body device with one end connected with the reset mechanism and the other end fixed in the box on one side of the tower assembly. The scheme has the advantages of simple and compact structure, safety and reliability, space saving, convenient operation and safe pillar not lost when not in use. The safe pillar of the scheme is inclined in the middle of the tower assembly by the pulling force of the spring when not in use, and the square column becomes vertical state to support the lower side of the crossbeam of the lifting bracket by the pulling force of the steel wire rope larger than the pulling force of the spring when in use, so that the lifting platform is stationary, and the lifting platform and the lifting bracket will not hurt or impact the personnel or objects below in the abnormal state or maintenance state, thereby playing a safety guarantee role.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a safety support for an accessible lifting platform. Background Technology

[0002] With economic development and the improvement of people's living standards, people have increasingly higher requirements for safety, and the use and maintenance of elevators are becoming more frequent. Therefore, safety requirements are also rising. For example, for accessible lifting platforms, to ensure their safety, platform supports are installed. Currently, these supports are independent and are placed at the bottom of the lifting platform to support it when needed. Because they are independent, they are often left aside after use, and over time, they may not be found when needed again.

[0003] To overcome the aforementioned problems, we have invented a safety support for an accessible lifting platform. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing platform supports are independent components, used only when needed to support the platform, and then left aside after use, making them difficult to find when needed again. The specific solution is as follows:

[0005] A safety support for an accessible lifting platform is provided. The safety support is installed between the tower assembly and the lifting platform. The safety support includes a support body, a safety linkage device located at the upper end of the support body, a reset mechanism located near the lower side of the safety linkage device, and an opening device for the support body, one end of which is connected to the reset mechanism and the other end of which is fixed inside a box on one side of the tower assembly.

[0006] Furthermore, the support column includes a square column, a square column base, and a sleeve column disposed on the square column base. The sleeve column is fixed to the square column base. The lower end of the square column is fitted onto the sleeve column with a gap between them. The upper end of the square column rests obliquely against the tower assembly when it is normally in use. When the support column opening device is opened, the upper and lower ends of the square column are perpendicular to the square column base, and the top surface of the square column abuts against the lower side of the crossbeam of the platform bracket used to support the lifting platform.

[0007] Furthermore, the reset mechanism includes a double-section hinge and a first rotating shaft located in the middle of the double-section hinge. One end of the double-section hinge near the square column is rotatably connected to the square column via a second rotating shaft, and the other end of the double-section hinge near the tower assembly is rotatably connected to a first fixed bracket on the tower assembly via a third rotating shaft. The reset mechanism also includes a spring, one end of which is sleeved with the first rotating shaft, and the other end of which is sleeved with a spring fixing post on the first fixed bracket.

[0008] Furthermore, the device for opening the support column includes a steel wire rope and an outer tube sleeved over the steel wire rope. The upper end of the steel wire rope protrudes from the outer tube and is sleeved in the first rotating shaft. The upper end of the outer tube is fixed to the lower bending strip of the first fixed bracket by a nut. The lower end of the steel wire rope is connected to the opening mechanism.

[0009] Furthermore, the opening mechanism includes a second fixed bracket fixedly connected to the lower end of the outer tube by a nut, and a pull rod fixedly connected to the lower end of the steel wire rope exposed at the lower end of the outer tube. The middle part of the pull rod passes through the through hole of the third fixed bracket, and the second fixed bracket and the third fixed bracket are arranged opposite each other on both sides of the pull rod.

[0010] Furthermore, both the second and third fixed brackets are inverted L-shaped, and the length of the second fixed bracket is at least twice the length of the third fixed bracket. The lower ends of the second and third fixed brackets are flush, and the lower part of the pull rod extends below the lower ends of the second and third fixed brackets.

[0011] Furthermore, the opening mechanism also includes a mounting bracket that is vertically fixed to the lower ends of the second and third fixed brackets. The mounting bracket has a through hole in the middle for the pull rod to pass through. The mounting bracket is fixed to a box on one side of the tower assembly by screws. The lower end of the pull rod enters the box through the through hole and has a pull ring at the lower end.

[0012] Furthermore, the second and third fixed brackets are each provided with a latch at their lower ends. The pull rod inside the third fixed bracket is provided with a locking pin with both ends exposed and perpendicular to the pull rod. The locking pin matches the latch. When the pull ring pulls the pull rod and the wire rope downwards and rotates counterclockwise by 90°, the locking pin engages with the latch and prevents the spring from springing back. At this time, the opening support body device is in the open state.

[0013] Furthermore, the safety linkage device includes a safety pin fixed to one side of the upper end of the square column and a safety switch fixed to the first fixed bracket. The safety pin matches the safety switch, and the contact surface of the safety switch is an inclined surface with an inclination angle equal to the inclination angle of the square column when it is not in use. The safety switch is connected in series with the main switch of the tower assembly through a wire. When the safety pin and the safety switch are engaged, the safety switch is in an energized state. When the safety pin and the safety switch are separated, the safety switch is in an de-energized state.

[0014] Furthermore, the safety pin has two parallel ones, and the safety switch has two corresponding matching socket holes.

[0015] In summary, the technical solution of this utility model has the following beneficial effects:

[0016] This utility model has the following advantages: simple and compact structure, safe and reliable, space-saving, easy to operate, and the safety support will not be lost when not in use. This design uses a square column as the safety support. When not in use, it leans against the middle of the tower assembly due to the tension of a spring. When in use, the tension of the steel wire rope exceeds the spring tension, pulling the double-section hinge to make the square column vertical, pressing against the lower side of the crossbeam of the lifting bracket, keeping the lifting platform stationary. This safety measure ensures that in abnormal or maintenance conditions, the lifting platform and lifting bracket will not collide with personnel or objects below them, thus preventing injury or impact and providing a safety guarantee. The safety interlocking device in the safety support of this design ensures that the power supply to the lifting platform is cut off in abnormal or maintenance conditions, preventing safety accidents. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the safety support column and tower assembly of a barrier-free lifting platform according to this utility model;

[0019] Figure 2 for Figure 1 Partial structural diagram of the safety support pillars in Zone A;

[0020] Figure 3 for Figure 1 Partial structural diagram of the safety support pillars in Zone B;

[0021] Figure 4 This is a structural diagram of the square column, square column base, and sleeve column of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Tower assembly, 11-Box, 12-Platform bracket, 13-Crossbeam, 14-First fixed bracket, 141-Spring fixing column, 15-Main switch, 20-Square column, 21-Square column base, 22-Sleeve column, 30-Double hinge, 31-First pivot, 32-Second pivot, 33-Third pivot, 34-Spring, 40-Wire rope, 401-Rope bundle block, 41-Outer tube, 42-Nut, 43-Bending strip, 44-Second fixed bracket, 45-Pull rod, 46-Third fixed bracket, 47-Through hole, 48-Mounting bracket, 49-Pull ring, 50-Screw, 51-Bayonet, 52-Pin, 60-Safety pin, 61-Safety switch, 62-Inclined surface, 63-Wire, 64-Pin hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] like Figures 1 to 4 As shown, a safety support for an accessible lifting platform is provided. The safety support is located between the tower assembly 10 of the accessible lifting platform and the lifting platform (not shown in the figure). The safety support includes a support body, a safety linkage device located at the upper end of the support body, a reset mechanism located near the lower side of the safety linkage device, and an opening support body device with one end connected to the reset mechanism and the other end fixed in a box 11 on one side of the tower assembly 10.

[0026] Specifically, the support structure includes a square column 20, a square column base 21, and a sleeve column 22 disposed on the square column base 21. The sleeve column 22 is fixed to the square column base 21. The lower end of the square column 20 is fitted onto the sleeve column 22 with a gap between them (to facilitate tilting). The upper end of the square column 20 is normally (i.e. when not in use) leaning against the tower assembly 10. When the support structure device is opened for use, the upper and lower ends of the square column 20 are perpendicular to the square column base 21. The top surface of the square column 20 abuts against the lower side of the crossbeam 13 of the platform bracket 12 used to support the lifting platform.

[0027] Specifically, the reset mechanism includes a double-section hinge 30 and a first rotating shaft 31 located in the middle of the double-section hinge 30. One end of the double-section hinge 30 near the square post 20 is rotatably connected to the square post 20 through a second rotating shaft 32. One end of the double-section hinge 30 near the tower assembly 10 is rotatably connected to the first fixed bracket 14 on the tower assembly 10 through a third rotating shaft 33. The reset mechanism also includes a spring 34. One end of the spring 34 is sleeved with the first rotating shaft 31, and the other end of the spring 34 is sleeved with the spring fixing post 141 on the first fixed bracket 14.

[0028] Specifically, the device for opening the support includes a steel wire rope 40 and an outer tube 41 that is sleeved around the steel wire rope 40. The upper end of the steel wire rope 40 protrudes from the outer tube 41 and is sleeved in the first rotating shaft 31. The upper end of the outer tube 41 is fixed to the lower end of the bending strip 43 of the first fixed bracket 14 by a nut 42. The lower end of the steel wire rope 40 is connected to the opening mechanism.

[0029] Specifically, the opening mechanism includes a second fixed bracket 44 fixedly connected to the lower end of the outer tube 41 via a nut 42, and a pull rod 45 fixedly connected to the lower end of the steel wire rope 40 protruding from the lower end of the outer tube 41. The middle part of the pull rod 45 passes through the through hole 47 of the third fixed bracket 46. The second fixed bracket 44 and the third fixed bracket 46 are located on opposite sides of the pull rod 45. The lower end of the steel wire rope 40 is provided with a rope bundle block 401, which is threadedly connected to the upper end of the pull rod 45.

[0030] Specifically, both the second fixed bracket 44 and the third fixed bracket 46 are inverted L-shaped, and the length of the second fixed bracket 44 is at least twice the length of the third fixed bracket 46. The lower ends of the second fixed bracket 44 and the third fixed bracket 46 are flush, and the lower part of the pull rod 45 extends below the lower ends of the second fixed bracket 44 and the third fixed bracket 46.

[0031] Specifically, the opening mechanism also includes a mounting bracket 48 that is vertically fixed to the lower ends of the second fixed bracket 44 and the third fixed bracket 46. The mounting bracket 48 has a through hole 47 in the middle for the pull rod 45 to pass through. The mounting bracket 48 is fixed to the box 11 on one side of the tower assembly 10 by screws 50. The lower end of the pull rod 45 enters the box 11 through the through hole (not shown in the figure). The lower end of the pull rod 45 is provided with a pull ring 49, which makes it convenient to insert a finger into the pull ring 49 for pulling operation.

[0032] Specifically, the lower ends of the second fixed bracket 44 and the third fixed bracket 46 are respectively provided with a latch 51. The pull rod 45 inside the third fixed bracket 46 is provided with a latch 52 with both ends exposed and perpendicular to the pull rod 45. The latch 52 matches the latch 51. When the pull ring 49 pulls the pull rod 45 and the wire rope 40 downwards and rotates counterclockwise by 90°, the latch 52 engages with the latch 51 and prevents the spring 34 from springing back. At this time, the support body opening device is in the open state.

[0033] Specifically, the safety linkage device includes a safety pin 60 fixed to one side of the upper end of the square column 20 and a safety switch 61 fixed to the first fixed bracket 14. The safety pin 60 matches the safety switch 61, and the contact surface of the safety switch 61 is an inclined surface 62, the inclination angle of which is equal to the inclination angle of the square column 20 when it is not in use (i.e., when it is leaning against the wall). The safety switch 61 is connected in series with the main switch 15 of the tower assembly 10 through a wire 63. When the safety pin 60 and the safety switch 61 are engaged, the safety switch 61 is in the energized state. When the safety pin 60 and the safety switch 61 are separated, the safety switch 61 is in the de-energized state.

[0034] To ensure the reliable function of the safety linkage device, it is preferable that there are two parallel safety pins 60, and the safety switch 61 is provided with two matching socket pin holes 64.

[0035] In summary, the technical solution of this utility model has the following beneficial effects:

[0036] This utility model has the following advantages: simple and compact structure, safe and reliable, space-saving, easy to operate, and the safety support will not be lost when not in use. This design uses a square column as the safety support. When not in use, it leans against the middle of the tower assembly due to the tension of a spring. When in use, the tension of the steel wire rope exceeds the spring tension, pulling the double-section hinge to make the square column vertical, pressing against the lower side of the crossbeam of the lifting bracket, keeping the lifting platform stationary. This safety measure ensures that in abnormal or maintenance conditions, the lifting platform and lifting bracket will not collide with personnel or objects below them, thus preventing injury or impact and providing a safety guarantee. The safety interlocking device in the safety support of this design ensures that the power supply to the lifting platform is cut off in abnormal or maintenance conditions, preventing safety accidents.

[0037] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.

Claims

1. A safety support column for an accessible lifting platform, characterized in that: The safety support is installed between the tower assembly and the lifting platform of the barrier-free lifting platform. The safety support includes a support body, a safety linkage device located at the upper end of the support body, a reset mechanism located near the lower side of the safety linkage device, and an opening support body device with one end connected to the reset mechanism and the other end fixed in a box on one side of the tower assembly.

2. The safety support column of the barrier-free lifting platform according to claim 1, characterized in that: The support structure includes a square column, a square column base, and a sleeve column mounted on the square column base. The sleeve column is fixed to the square column base. The lower end of the square column is fitted onto the sleeve column with a gap between them. The upper end of the square column rests obliquely against the tower assembly when it is not in use. When the support structure opening device is opened, the upper and lower ends of the square column are perpendicular to the square column base, and the top surface of the square column abuts against the lower side of the crossbeam of the platform bracket used to support the lifting platform.

3. The safety support column of the barrier-free lifting platform according to claim 2, characterized in that: The reset mechanism includes a double-section hinge and a first rotating shaft located in the middle of the double-section hinge. One end of the double-section hinge near the square column is rotatably connected to the square column through a second rotating shaft. The other end of the double-section hinge near the tower assembly is rotatably connected to a first fixed bracket on the tower assembly through a third rotating shaft. The reset mechanism also includes a spring, one end of which is sleeved with the first rotating shaft, and the other end of which is sleeved with a spring fixing post on the first fixed bracket.

4. The safety support column of the barrier-free lifting platform according to claim 3, characterized in that: The device for opening the support column includes a steel wire rope and an outer tube sleeved over the steel wire rope. The upper end of the steel wire rope protrudes from the outer tube and is sleeved in the first rotating shaft. The upper end of the outer tube is fixed to the lower bending strip of the first fixed bracket by a nut. The lower end of the steel wire rope is connected to the opening mechanism.

5. The safety support column of the barrier-free lifting platform according to claim 4, characterized in that: The opening mechanism includes a second fixed bracket fixedly connected to the lower end of the outer tube by a nut, and a pull rod fixedly connected to the lower end of the steel wire rope exposed at the lower end of the outer tube. The middle part of the pull rod passes through the through hole of the third fixed bracket. The second fixed bracket and the third fixed bracket are arranged opposite each other on both sides of the pull rod.

6. The safety support column of the barrier-free lifting platform according to claim 5, characterized in that: Both the second and third fixed brackets are inverted L-shaped, and the length of the second fixed bracket is at least twice the length of the third fixed bracket. The lower ends of the second and third fixed brackets are flush, and the lower part of the pull rod extends below the lower ends of the second and third fixed brackets.

7. The safety support column of the barrier-free lifting platform according to claim 6, characterized in that: The opening mechanism also includes a mounting bracket that is vertically fixed to the lower ends of the second and third fixed brackets. The mounting bracket has a through hole in the middle for the pull rod to pass through. The mounting bracket is fixed to a box on one side of the tower assembly by screws. The lower end of the pull rod enters the box through the through hole and has a pull ring at the lower end.

8. The safety support column of the barrier-free lifting platform according to claim 7, characterized in that: The second and third fixed brackets are respectively provided with a latch at the lower end. The pull rod inside the third fixed bracket is provided with a latch pin with two exposed ends and perpendicular to the pull rod. The latch pin matches the latch. When the pull ring pulls the pull rod and the wire rope downward and rotates counterclockwise by 90°, the latch pin engages with the latch and prevents the spring from springing back. At this time, the opening support body device is in the open state.

9. The safety support column of the barrier-free lifting platform according to claim 3, characterized in that: The safety linkage device includes a safety pin fixed to one side of the upper end of the square column and a safety switch fixed to the first fixed bracket. The safety pin and the safety switch are matched, and the contact surface of the safety switch is an inclined surface with an inclination angle equal to the inclination angle of the square column when it is not in use. The safety switch is connected in series with the main switch of the tower assembly through a wire. When the safety pin and the safety switch are engaged, the safety switch is in the energized state. When the safety pin and the safety switch are separated, the safety switch is in the de-energized state.

10. The safety support column of the barrier-free lifting platform according to claim 9, characterized in that: The safety pin has two parallel ones, and the safety switch has two matching socket holes.

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