A retractable working platform capable of avoiding protrusions

Abstract

The utility model discloses an exhibition and collection type working platform capable of avoiding protrusions, which comprises a base assembly, a supporting platform and an externally-hung pedal, the supporting platform capable of vertical swinging is movably connected to the base assembly through a pin shaft; the base assembly is provided with an exhibition and collection driving mechanism capable of driving the supporting platform to vertically swing; the externally-hung pedal is hung on the front end edge of the supporting platform through a hanging lug plate and a bolt, and the hanging lug plate of the externally-hung pedal is attached to the front end surface of the supporting platform; the front end surface of the supporting platform is provided with an avoiding gap for avoiding protrusions, and a avoiding pedal is detachably fixed on the supporting platform at the position corresponding to the avoiding gap; the utility model has the advantages of having the exhibition and collection function, high exhibition and collection precision, being capable of locking the platform when it is retracted, improving the safety performance of the working platform, having the function of avoiding protrusions, simple structure, stable and reliable unfolding and retracting actions, convenient disassembly of the externally-hung pedal and the manual pedal, simple operation and the like.

Description

Technical Field

[0001] This utility model relates to the field of work platform technology, specifically to a retractable work platform that can avoid protrusions. Background Technology

[0002] When working at heights in freight yards, railways, mines, and other similar locations, aerial work platforms are often required. Due to limited space, these platforms are often deployed and occupy space when not in use, requiring deployment when needed and retraction when not in use. Furthermore, the confined installation location can cause interference with other objects when the platform is deployed. Patent publication number CN216713765U discloses a ring-shaped work platform, specifically featuring an extension plate at the front end of the platform frame, driven by a worm gear reducer. However, this design suffers from limitations such as the inability to achieve both deployment and retraction, and the inability to avoid protruding objects. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a retractable work platform that can avoid protrusions. It has retractable function with high retractable accuracy; the platform can be locked when retracted, and the locking is reliable, which improves the safety performance of the work platform; it has the function of avoiding protrusions; the structure is simple, the retraction and unfolding actions are stable and reliable, the external pedal and manual pedal are easy to disassemble, and the operation is simple, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a retractable work platform capable of avoiding protrusions, comprising a base assembly, a support platform, and an external pedal. The end of the support platform is movably connected to the base assembly via a pin, and the support platform can swing vertically. The base assembly is provided with a retractable drive mechanism that can drive the support platform to swing vertically. The front edge of the support platform is provided with multiple hooking protrusions, and the end edge of the external pedal is provided with a hanging ear plate. Each hanging ear plate has a first pin hole at the position corresponding to a hooking protrusion, and each hooking protrusion has a second pin hole at the position corresponding to the first pin hole. The external pedal is hooked to the support platform via pins passing through the first and second pin holes, and the hanging ear plate of the external pedal is in contact with the front end face of the support platform. The front end face of the support platform is provided with a avoidance notch for avoiding protrusions, and an avoidance pedal is detachably fixed to the support platform at the corresponding avoidance notch.

[0005] Furthermore, the base assembly includes two parallel platform bases, with hinge seats one on both the left and right sides of the end of the supporting platform, and hinge seats two on the platform bases. The hinge seats one and the hinge seats two are hinged together by a pin.

[0006] Furthermore, the base assembly also includes two parallel supporting bases located below the platform base; the extension and retraction drive mechanism includes an electro-hydraulic actuator fixedly mounted at the bottom of the supporting platform, with a transmission beam fixedly connected to the telescopic end of the electro-hydraulic actuator, and a linear slide rail along the front-rear direction at the bottom of the supporting platform at the position corresponding to the transmission beam, the transmission beam being slidably connected to the linear slide rail via a slider, and a support rod hinged to the supporting base, the other end of the support rod being hinged to the transmission beam.

[0007] Furthermore, the support platform includes a platform bracket, a hinge seat is disposed at the end of the platform bracket, a hook protrusion is disposed at the front edge of the platform bracket, and a fixed pedal adapted to its structure is fixedly disposed on the top surface of the platform bracket; the front end of the platform bracket is provided with a bracket notch, and the fixed pedal is provided with an installation notch at the position corresponding to the bracket notch, and an avoidance notch is formed between the bracket notch and the installation notch; the avoidance pedal is fixedly disposed at the bracket notch.

[0008] Furthermore, the platform support is provided with a support block at the edge of the corresponding support notch, and the support block has a screw hole; the avoidance pedal is provided with a mounting hole at the position of the corresponding screw hole, the avoidance pedal is placed on the support block and is detachably fixed to the platform support by screws passing through the mounting hole and the screw hole, and the avoidance pedal is also provided with multiple elongated holes; the platform support is also provided with a support beam for abutting and supporting the avoidance pedal.

[0009] Furthermore, the top and bottom edges of the external pedal are provided with hanging ear plates. The pin hole of the external pedal is opened on the hanging ear plate of its top edge. The hanging ear plate of the external pedal at the bottom edge is provided with a groove corresponding to the pin hole. The groove is used to avoid the corresponding pin. A reinforcing rib is provided between the hanging ear plates of the top edge and the hanging ear plates of the bottom edge. Weight reduction holes are evenly opened on the external pedal. The external pedal is provided with no less than two handles. The handles are U-bolt structures, and the bolt posts on both sides of the handle are vertically downward and fitted into two of the weight reduction holes. Two nuts are screwed to the ends of the bolt posts on both sides of the handle, and the handles can reliably fit against the top surface of the external pedal by their own weight.

[0010] Furthermore, it also includes a locking mechanism, which includes a locking base located above the platform base, with a fixed end plate at the front end of the locking base; a worm gear reducer is installed inside the locking base, and a drive motor capable of driving the worm gear reducer is also installed inside the locking base. The output shaft of the worm gear reducer extends through to the outside of the fixed end plate and is fixedly fitted with a locking tongue; an inductive switch and a buffer are also provided on the fixed end plate; a second mounting notch is provided on the fixed pedal, and a locking plate is fixedly installed on the platform support at the position corresponding to the second mounting notch. The locking plate has a locking hole adapted to the locking tongue, and when the support platform retracts, the locking hole on the locking plate can pass through the locking tongue. The drive motor can drive the worm gear reducer to make the locking tongue and the locking hole offset at a certain angle to lock the support platform.

[0011] Furthermore, a tail plate is fixed between the top surfaces of the two platform bases, and when the support platform is unfolded, its end is flush with the front end of the tail plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This retractable work platform that can avoid protrusions is driven by a retractable drive mechanism to extend or retract the support platform, which has an extension and retraction function and high extension and retraction accuracy; the locking mechanism can lock the support platform when it is retracted, which is reliable and improves the safety performance of the work platform; the external pedal and avoidance pedal detachably provided at the front end of the support platform can avoid protrusions; this retractable work platform has a simple structure, stable and reliable extension and retraction actions, and the external pedal and manual pedal are easy to remove and operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the working platform of this utility model; Figure 3 This is an isometric drawing of the working platform of this utility model; Figure 4 This is a bottom view of the working platform of this utility model; Figure 5 This is an exploded view of the support platform of this utility model; Figure 6 This is a schematic diagram of the connection structure between the support platform and the external pedal of this utility model; Figure 7 This is a schematic diagram of the external pedal structure of this utility model; Figure 8 This is a schematic diagram of the locking mechanism of this utility model; Figure 9 This is a schematic diagram of the structure of the present invention in use; Figure 10 This is a schematic diagram of the structure of this utility model when avoiding protrusions.

[0014] In the diagram: 1. Base assembly; 11. Platform base; 12. Support base; 2. Support platform; 21. Platform bracket; 211. Hanging protrusion; 212. Bracket notch; 213. Support block; 214. Support beam; 22. Fixed pedal; 221. Installation notch one; 222. Installation notch two; 23. Hinge seat one; 24. Linear slide rail; 25. Locking plate; 3. Extension and retraction drive mechanism; 31. Support rod; 32. 1. Electro-hydraulic actuator; 33. Transmission beam; 4. External footplate; 41. Hanging ear plate; 42. Pin hole 1; 43. Groove; 44. Reinforcing rib plate; 5. Clearance footplate; 6. Locking mechanism; 61. Locking base; 62. Drive motor; 63. Worm gear reducer; 64. Locking tongue; 65. Buffer; 66. Inductive switch; 67. Fixed end plate; 7. Tail plate; 8. Pin; 9. Handle; 100. Construction object. Detailed Implementation

[0015] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1-2 This utility model provides a technical solution: a retractable work platform that can avoid protrusions, including a base assembly 1, a support platform 2 and an external pedal 4. The end of the support platform 2 is movably connected to the base assembly 1 by a pin, and the support platform 2 can swing vertically. The base assembly 1 is provided with a retractable drive mechanism 3 that can drive the support platform 2 to swing vertically. The base assembly 1 includes two parallel platform bases 11. A hinge seat 23 is provided on the left and right sides of the end of the supporting platform 2. A second hinge seat is provided on the platform base 11. The first hinge seat 23 and the second hinge seat are hinged together by a pin. A tail plate 7 is fixedly provided between the top surfaces of the two platform bases 11, and when the supporting platform 2 is unfolded, its end is flush with the front end of the tail plate 7. The base assembly 1 also includes two parallel supporting bases 12, which are located below the platform bases 11. Please refer to the following: Figure 3-4The support platform 2 includes a platform bracket 21, a hinge seat 23 is disposed at the end of the platform bracket 21, and a fixed pedal 22 adapted to its structure is fixedly disposed on the top surface of the platform bracket 21; the extension and retraction drive mechanism 3 includes an electro-hydraulic actuator 32 fixedly disposed at the bottom end of the platform bracket 21, a transmission beam 33 is fixedly connected to the telescopic end of the electro-hydraulic actuator 32, a linear slide rail 24 is disposed at the bottom of the platform bracket 21 at the position corresponding to the transmission beam 33 along the front and rear direction, the transmission beam 33 is slidably connected to the linear slide rail 24 by a slider, and a support rod 31 is hinged on the support base 12, the other end of the support rod 31 is hinged to the transmission beam 33; Please refer to the following: Figure 4-7 The platform support 21 has multiple hanging protrusions 211 on its front edge. The top and bottom edges of the external pedal 4 are provided with hanging ear plates 41. The hanging ear plates 41 on the top edge of the external pedal 4 are provided with pin holes 42 at the positions corresponding to the hanging protrusions 211. The hanging protrusions 211 are provided with pin holes 42 at the positions corresponding to the pin holes 42. The external pedal 4 is hung on the support platform 2 by pins 8 passing through the pin holes 42 and pin holes 42. The hanging ear plates 41 on the bottom edge of the external pedal 4 are provided with grooves 43 corresponding to the pin holes 42. The grooves 43 are used to avoid the corresponding pins 8. The hanging ear plates 41 of the external pedal 4 are in contact with the front end face of the support platform 2. The front end of the support platform 2 is provided with a clearance notch for avoiding protrusions, and a clearance step 5 is detachably fixed on the support platform 2 at the corresponding clearance notch; the front end of the platform bracket 21 is provided with a bracket notch 212, and the fixed step 22 is provided with an installation notch 221 at the position corresponding to the bracket notch 212, and a clearance notch is formed between the bracket notch 212 and the installation notch 221; the clearance step 5 is fixedly installed at the bracket notch 212; The platform support 21 is provided with a support block 213 at the edge of the corresponding support notch 212, and the support block 213 is provided with a screw hole; the avoidance pedal 5 is provided with a mounting hole at the corresponding screw hole, the avoidance pedal 5 is placed on the support block 213 and is detachably and fixedly connected to the platform support 21 by screws passing through the mounting hole and the screw hole, and the avoidance pedal 5 is also provided with a plurality of elongated holes; the platform support 21 is also provided with a support beam 214 for abutting and supporting the avoidance pedal 5; Please refer to the following: Figure 4-5 and Figure 8It also includes a locking mechanism 6, which includes a locking base 61 disposed above the platform base 11, and a fixed end plate 67 at the front end of the locking base 61; a worm gear reducer 63 is disposed inside the locking base 61, and a drive motor 62 that can drive the worm gear reducer 63 is disposed inside the locking base 61. The output shaft of the worm gear reducer 63 passes through the fixed end plate 67 and is fixedly disposed on a locking tongue 64; an inductive switch 66 and a buffer 65 are also disposed on the fixed end plate 67; an installation notch 222 is provided on the fixed pedal 22, and a locking plate 25 is fixedly disposed on the platform bracket 21 at the position corresponding to the installation notch 222. The locking plate 25 is provided with a locking hole that matches the locking tongue 64, and when the support platform 2 is retracted, the locking hole on the locking plate 25 can pass through the locking tongue 64. The drive motor 62 can drive the worm gear reducer 63 to make the locking tongue 64 and the locking hole offset at a certain angle to lock the support platform 2.

[0017] Please refer to the following: Figure 9-10 The working principle during use is as follows: the platform base 11, the support base 12 and the locking base 61 are fixed to the foundation support wall; From vertically retracted to horizontally extended: The worm gear reducer 63 driven by the drive motor 62 rotates the locking tongue 64. After the locking tongue 64 rotates to coincide with the locking hole of the locking plate 25, the drive motor 62 stops running. The telescopic end of the electro-hydraulic actuator 32 extends, causing the transmission beam 33 to slide relative to the linear slide rail 24, thereby causing the support platform 2 to swing downward and unfold. When the front end of the support platform 2 rotates to the protrusion of the construction object 100, the support platform 2 smoothly avoids the protrusion of the construction object 100 through the avoidance space provided by the external foot pedal 4 and the avoidance foot pedal 5 at its front end until the support platform 2 is fully unfolded. Then, the avoidance foot pedal 5 is placed at the installation notch 221 and fixed to the platform bracket 21 with screws. Finally, the external foot pedal 4 is attached to the front end of the support platform 2, and then the operator can stand on the work platform to carry out construction on the construction object 100. From horizontally extended state to vertically retracted state: After pulling out the pin 8, remove the external pedal 4 from the support platform 2, and then remove the avoidance pedal 5 from the support platform 2. The telescopic end of the electro-hydraulic actuator 32 retracts, causing the transmission beam 33 to slide relative to the linear slide rail 24, thereby causing the support platform 2 to swing upward and retract. When the front end of the support platform 2 rotates to the protrusion of the construction object 100, the avoidance space left by the external pedal 4 and the avoidance pedal 5 at its front end allows the support platform 2 to smoothly avoid the protrusion of the construction object 100 until the support platform 2 is completely retracted. The impact of the support platform 2 on the locking mechanism 6 is reduced by the buffer 65. The induction switch 66 detects whether the support platform 2 has been retracted into place. When the support platform 2 has been retracted into place, the drive motor 62 drives the worm gear reducer 63 to rotate the locking tongue 64. The locking tongue 64 rotates until it is misaligned with the locking hole of the locking plate 25 (e.g., rotates 90°), and then the drive motor 62 stops running, thereby locking the support platform 2 with the locking tongue 64.

[0018] Please refer to the following: Figure 6-7 A reinforcing rib 44 is provided between the top edge hanging ear plate 41 and the bottom edge hanging ear plate 41 to increase the structural strength of the hanging ear plate 41. The outer pedal 4 is provided with weight-reducing holes evenly distributed. The outer pedal 4 is provided with no less than two handles 9. The handles 9 are U-shaped bolt structures, and the bolt posts on both sides of the handles 9 are vertically downward and fitted into two of the weight-reducing holes. Two nuts are screwed to the ends of the bolt posts on both sides of the handles 9. The handles 9 can reliably fit against the top surface of the outer pedal 4 by their own weight. The handles 9 facilitate the attachment and removal of the outer pedal 4.

[0019] The retractable work platform disclosed in this embodiment, capable of avoiding protrusions, uses a retractable drive mechanism 3 to drive the support platform 2 to extend or retract with high precision. A locking mechanism 6 locks the support platform 2 during retraction, ensuring reliable locking and improving the platform's safety. A detachable external pedal 4 and an obstacle avoidance pedal 5 at the front end of the support platform 2 allow for obstacle avoidance. This retractable work platform has a simple structure, stable and reliable extension and retraction actions, and easy disassembly and reassembly of the external and manual pedals, making it simple to operate.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable work platform capable of avoiding protrusions, comprising a base assembly, a support platform, and an external footplate, characterized in that: The end of the support platform is movably connected to the base assembly via a pin, and the support platform can swing vertically. The base assembly is equipped with an extension and retraction drive mechanism that can drive the support platform to swing vertically. The front edge of the support platform is provided with multiple hooking protrusions, and the end edge of the external pedal is provided with a hanging ear plate. Each hanging ear plate has a pin hole 1 at the position corresponding to the hooking protrusion, and each hooking protrusion has a pin hole 2 at the position corresponding to the pin hole 1. The external pedal is hooked to the support platform through pins passing through pin holes 1 and pin holes 2, and the hanging ear plate of the external pedal fits against the front end face of the support platform. The front end face of the support platform is provided with a clearance notch for avoiding protrusions, and a clearance pedal is detachably fixed on the support platform at the corresponding clearance notch.

2. The retractable work platform that can avoid protrusions according to claim 1, characterized in that: The base assembly includes two parallel platform bases, with hinge seats one on both the left and right sides of the end of the supporting platform, and hinge seats two on the platform bases. Hinges one and hinge seats two are hinged together by a pin.

3. The retractable work platform that can avoid protrusions according to claim 2, characterized in that: The base assembly also includes two parallel support bases located below the platform base; the extension and retraction drive mechanism includes an electro-hydraulic actuator fixedly mounted at the bottom of the support platform, with a transmission beam fixedly connected to the telescopic end of the electro-hydraulic actuator, and a linear slide rail along the front-back direction at the bottom of the support platform at the position corresponding to the transmission beam, with the transmission beam slidably connected to the linear slide rail via a slider, and a support rod hinged to the support base, with the other end of the support rod hinged to the transmission beam.

4. The retractable work platform that can avoid protrusions according to claim 2, characterized in that: The support platform includes a platform bracket, a hinge seat is located at the end of the platform bracket, a hook protrusion is located at the front edge of the platform bracket, and a fixed pedal adapted to its structure is fixedly provided on the top surface of the platform bracket; the front end of the platform bracket is provided with a bracket notch, and the fixed pedal is located at the position corresponding to the bracket notch with an installation notch, and an avoidance notch is formed between the bracket notch and the installation notch; the avoidance pedal is fixedly provided at the bracket notch.

5. The retractable work platform that can avoid protrusions according to claim 4, characterized in that: The platform support is provided with a support block at the edge of the corresponding support notch, and the support block has a screw hole; the avoidance pedal is provided with a mounting hole at the corresponding screw hole, the avoidance pedal is placed on the support block and is detachably fixed to the platform support by screws passing through the mounting hole and the screw hole, and the avoidance pedal is also provided with multiple elongated holes; the platform support is also provided with a support beam for abutting and supporting the avoidance pedal.

6. The retractable work platform that can avoid protrusions according to claim 1, characterized in that: The top and bottom edges of the external pedal are provided with hanging ears. The pin hole of the external pedal is opened in the hanging ear plate of its top edge. The hanging ear plate of the bottom edge of the external pedal is provided with a groove corresponding to the pin hole. The groove is used to avoid the corresponding pin. A reinforcing rib is provided between the hanging ear plates of the top edge and the hanging ear plates of the bottom edge. Weight reduction holes are evenly opened on the external pedal. The external pedal is provided with no less than two handles. The handles are U-bolt structures, and the bolt posts on both sides of the handle are vertically downward and fitted into two of the weight reduction holes. Two nuts are screwed to the ends of the bolt posts on both sides of the handle, and the handles are reliably attached to the top surface of the external pedal by their own weight.

7. The retractable work platform that can avoid protrusions according to claim 4, characterized in that: It also includes a locking mechanism, which includes a locking base located above the platform base, with a fixed end plate at the front end of the locking base; a worm gear reducer is installed inside the locking base, and a drive motor capable of driving the worm gear reducer is also installed inside the locking base. The output shaft of the worm gear reducer extends through to the outside of the fixed end plate and is fixedly fitted with a locking tongue; an inductive switch and a buffer are also provided on the fixed end plate; a second mounting notch is provided on the fixed pedal, and a locking plate is fixedly installed on the platform support at the position corresponding to the second mounting notch. The locking plate has a locking hole adapted to the locking tongue, and when the support platform retracts, the locking hole on the locking plate can pass through the locking tongue. The drive motor can drive the worm gear reducer to make the locking tongue and the locking hole offset at a certain angle to lock the support platform.

8. The retractable work platform that can avoid protrusions according to claim 2, characterized in that: A tail plate is fixed between the top surfaces of the two platform bases, and when the platform is unfolded, its end is flush with the front end of the tail plate.

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