Aerial work telescopic platform

Abstract

The utility model discloses an aerial work telescopic platform which comprises a main platform and an auxiliary platform in sliding fit with the main platform in the horizontal direction, a plurality of limiting parts distributed in the moving direction of the auxiliary platform are arranged on the lower portion of the side edge of the main platform, and locking parts matched with the limiting parts are arranged on the lower portion of the auxiliary platform. The locking part comprises a base fixedly installed on the auxiliary platform and a pedal rotationally arranged on the base, one end of the pedal is connected with a locking shaft arranged in the vertical direction, and the locking shaft is inserted into the limiting part and suitable for being separated from the limiting part when the other end of the pedal bears downward external force. According to the utility model, one end of the pedal plate is treaded downwards, so that the locking shaft is driven to be separated from the limiting part, otherwise, the locking shaft is locked, rapid locking is realized, and compared with a locking mode of a traditional telescopic platform, the structure is simple, and locking and unlocking can be realized without double-hand operation, so that an operator can better control the movement of the auxiliary platform; and the use convenience and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work equipment, in particular to a telescopic platform for aerial work. Background Art

[0002] During the use of the aerial work platform, the working platform needs to adjust its state according to different usage conditions. The working platform basically includes a main platform and a sub-platform. The sub-platform can be extended and retracted from the main platform, or in a semi-extended state. The existing main and sub-platforms are connected by traditional movable locks. The change of the three states needs to be released first to allow the sub-platform to move. After the change is completed, the three states need to be re-connected with the main and sub-platforms with locks. This locking method is cumbersome to operate and requires workers to operate with both hands. After the release, it is necessary to take into account the moving sub-platform and locking the main and sub-platforms, which may lead to untimely locking and leave safety hazards. Utility Model Content

[0003] The utility model aims to propose a telescopic platform for aerial work in view of the deficiencies of the prior art, simplify the locking connection method of the main platform and the auxiliary platform, and improve the safety of use.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A telescopic platform for aerial work comprises a main platform and a sub-platform which slides with the main platform in a horizontal direction, a plurality of limit parts arranged and distributed along the moving direction of the sub-platform are provided at the lower part of the side of the main platform, a locking part adapted to the limit parts is provided at the lower part of the sub-platform, the locking part comprises a base fixedly mounted on the sub-platform and a foot pedal rotatably arranged on the base, one end of the foot pedal is connected to a locking shaft arranged in a vertical direction, the locking shaft is inserted in the limit part and is suitable for being separated from the limit part when the other end of the foot pedal is subjected to a downward external force.

[0006] Furthermore, the base includes an integrally formed first bottom plate and a first mounting plate arranged perpendicular to the first bottom plate, the foot pedal is hinged on the first mounting plate, a first through hole opposite to the limiting portion is opened on the first bottom plate, the locking shaft passes through the first through hole and is externally sleeved with a counterweight block arranged along the axial limit, and the lower end of the counterweight block is fixedly connected to a limiting nut having an outer diameter larger than the first through hole.

[0007] Furthermore, a first annular step is provided at the lower end of the locking shaft, the upper end of the first annular step extends into the counterweight block, and a first spring is provided inside the counterweight block and is sleeved on the locking shaft, and both ends of the first spring are respectively in contact with the inner top of the counterweight block and the top of the first annular step.

[0008] Furthermore, the base includes an integrally formed second bottom plate, a boss, and a second mounting plate arranged perpendicular to the second bottom plate, the foot pedal is hinged on the second mounting plate, the center of the boss is provided with a second through hole that penetrates the second bottom plate and faces the limiting portion, the limiting sleeve is fixedly connected in the second through hole, the locking shaft penetrates the limiting sleeve and is elastically connected to the limiting sleeve along the longitudinal direction.

[0009] Furthermore, a second annular step is provided at the lower end of the locking shaft, the upper end of the second annular step extends into the limiting sleeve, and a second spring is provided in the limiting sleeve and is sleeved on the locking shaft, and the two ends of the second spring are respectively abutted against the inner top of the limiting sleeve and the top of the second annular step.

[0010] Furthermore, two second mounting plates are provided and arranged opposite to each other, and the foot pedal is hingedly arranged between the two second mounting plates.

[0011] Furthermore, the top of the other end of the foot pedal is provided with anti-slip grooves parallel to each other.

[0012] Furthermore, the top of the locking shaft passes through the foot pedal and is threadedly connected with an adjusting nut.

[0013] Furthermore, protective frames are provided on both sides of the main platform and a protective door is provided on the side away from the secondary platform, a torsion spring hinge is connected between one side of the protective door and the corresponding protective frame, and a protective lock is provided on the other side, and a limiting plate extending toward the protective lock is fixedly installed on the inner side of the protective frame corresponding to the protective lock, and the protective lock includes a baffle provided in the middle of the protective door and extending to the inner side of the protective frame, and a lock tongue elastically installed in the baffle along the horizontal direction, and the lock tongue extends to the outer side of the limiting plate.

[0014] Furthermore, the limiting portion includes relatively arranged stoppers, a slot adapted to the locking shaft is formed between the two stoppers, and an upwardly protruding limit block is provided on the stopper located at the end of the extension direction of the secondary platform, and the limit block is higher than the bottom of the locking portion.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model sets a limit part on the main platform, and sets a locking part composed of a base, a foot pedal and a locking shaft on the sub-platform. By stepping down on one end of the foot pedal, the other end of the foot pedal installed on the base is rotated and lifted upward, thereby driving the locking shaft to separate from the limit part, and vice versa, lock with the limit part, thereby realizing rapid locking. Compared with the locking method of the traditional telescopic platform, the utility model has a simple structure and can be locked and opened without the need for two-handed operation, so that the operator can better control the movement of the sub-platform, thereby improving the convenience and safety of use.

[0017] (2) The locking part of the utility model is provided with a counterweight on the locking shaft, so that the locking shaft can be quickly reset under the action of gravity when the external force applied to the pedal is removed, and remain locked.

[0018] (3) The utility model realizes elastic connection between the counterweight block and the locking shaft by setting a first spring. When the limit nut on the counterweight block contacts the first bottom plate, shock absorption is achieved under the action of the first spring, thereby effectively reducing noise.

[0019] (4) The locking part of the utility model is provided with a limit sleeve elastically connected to the locking shaft, and the limit sleeve is integrally formed with the second base plate, thereby realizing an elastic connection between the locking shaft and the second base plate, so that the locking shaft can be quickly reset under the action of the elastic force when the external force applied to the foot pedal is removed, and the locking shaft can remain locked.

[0020] (5) The utility model adopts a second spring to realize the elastic connection between the locking shaft and the limiting sleeve, which has a simple structure and low manufacturing cost.

[0021] (6) The utility model has two second mounting plates arranged opposite to each other, thereby improving the stability of the overall structure, preventing the pedal from rotating crookedly and causing damage, and extending the service life.

[0022] (7) The utility model prevents sliding when the foot steps on the pedal by providing an anti-skid groove, thereby improving unlocking stability.

[0023] (8) The utility model can achieve connection with the foot pedal by providing an adjusting nut threadedly connected to the locking shaft, and at the same time can adjust the depth of the locking shaft inserted into the limiting part, which is convenient for installation and debugging.

[0024] (9) The protective door of the utility model is provided with a two-way locking protective lock, which further improves the safety of use.

[0025] (10) The limit part of the utility model is composed of two blocks, with a simple structure, and a limit block is provided on the block located at the end, and a pure mechanical limit is adopted to prevent the auxiliary platform from extending beyond the limit position and falling off, thereby further improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 is a stereogram of Example 1;

[0028] Figure 2 It is a structural schematic diagram of the locking portion of Example 1;

[0029] Figure 3 is a cross-sectional view of the locking portion of Example 1;

[0030] Figure 4 This is a schematic diagram of the structure of the protective door of Example 1;

[0031] Figure 5 This is a schematic diagram of the locking portion of Example 2;

[0032] Figure 6 It is a cross-sectional view of the locking portion of Example 2.

[0033] The reference numerals in the accompanying drawings are:

[0034] Main platform 1, protection frame 1-1, protection door 1-2, torsion spring hinge 1-3, protection lock 1-4, stop bar 1-4-1, lock tongue 1-4-2, limit plate 1-5, sub-platform 2, limit part 3, stop block 3-1, limit block 3-1-1, locking part 4, base 4-1, second bottom plate 4-1-1, boss 4-1-2, second mounting plate 4-1-3, first bottom plate 4-1-4, first mounting plate 4-1-5, foot pedal 4-2, anti-slip groove 4-2-1, locking shaft 4-3, second annular step 4-3-1, first annular step 4-3-2, limit sleeve 4-4, adjusting nut 4-5, second spring 4-6, counterweight 4-7, limit nut 4-8, first spring 4-9. DETAILED DESCRIPTION

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] (Example 1)

[0037] like Figures 1 to 4 The telescopic platform for aerial work comprises a main platform 1 and a sub-platform 2 which slides with the main platform 1 in the horizontal direction. The front lower part of the main platform 1 is provided with a plurality of limit parts 3 arranged in the horizontal direction. The front lower part of the sub-platform is provided with a locking part 4 which is adapted to the limit part 3 near the left end. The locking part 4 comprises a base 4-1, a foot pedal 4-2 and a locking shaft 4-3. The base 4-1 is fixedly mounted on the sub-platform 2, the middle part of the foot pedal 4-2 is rotatably mounted on the base 4-1, and the locking shaft 4-3 is arranged in the vertical direction and connected to one end of the foot pedal 4-2. In the initial state, the locking shaft 4-3 is inserted in the limit part 3 to realize the locking of the main and sub-platforms. When the other end of the foot pedal 4-2 is stepped on, the locking shaft installed on the end of the foot pedal is driven to lift upward, thereby separating from the limit part 3 to realize the free extension and retraction of the sub-platform 2. Compared with the locking method of the traditional telescopic platform, the structure is simple and can be locked and opened without using both hands, so that the operator can better control the movement of the sub-platform, improving the convenience and safety of use.

[0038] Specifically, the limit part 3 includes relatively arranged blocks 3-1, and a slot adapted to the locking shaft 4-3 is formed between the two blocks 3-1. The structure is simple, and the block 3-1 located at the end of the extension direction of the sub-platform is provided with an upwardly protruding limit block 3-1-1, and the limit block 3-1-1 is higher than the bottom of the locking part 4, thereby stopping the locking part 4, and then preventing the sub-platform 2 from extending beyond the limit position and falling off through pure mechanical limiting, thereby improving the safety of use of the telescopic platform.

[0039] The base 4-1 includes an integrally formed second bottom plate 4-1-1, a boss 4-1-2 and a second mounting plate 4-1-3, wherein the second mounting plate 4-1-3 is arranged perpendicular to the second bottom plate 4-1-1, and the foot pedal 4-2 is hinged on the second mounting plate 4-1-3. In order to improve the stability of the overall structure, the second mounting plates 4-1-3 of this embodiment are provided with two and are arranged opposite to each other. The foot pedal 4-2 is hinged between the two second mounting plates 4-1-3 to avoid damage caused by the rotation of the foot pedal 4-2 and extend its service life.

[0040] The center of the boss 4-1-2 is provided with a second through hole that penetrates the second bottom plate 4-1-1 and faces the slot, and a limiting sleeve 4-4 is fixedly connected in the second through hole, and the locking shaft 4-3 penetrates the limiting sleeve 4-4 and is elastically connected to the limiting sleeve 4-4 along the longitudinal direction. When the external force applied to the foot pedal is withdrawn, the locking shaft 4-3 can be quickly reset under the action of elastic force and remain locked. Specifically, the lower end of the locking shaft 4-3 is provided with a second annular step 4-3-1, and the upper end penetrates the foot pedal 4-2 and is threadedly connected with an adjusting nut 4-5. The upper end of the second annular step 4-3-1 extends into the limiting sleeve 4-4, and the limiting sleeve 4-4 is provided with a second spring 4-6 sleeved on the locking shaft 4-3, and the two ends of the second spring 4-6 are respectively abutted against the inner top of the limiting sleeve 4-4 and the top of the second annular step 4-3-1, and the overall structure is simple and the manufacturing cost is low. In order to facilitate stepping, the top of the other end of the foot pedal 4-2 of this embodiment is provided with mutually parallel anti-skid grooves 4-2-1, so as to increase the friction when stepping on, avoid sliding, and improve the unlocking stability.

[0041] Protective frames 1-1 are provided on both sides of the main platform 1 and a protective door 1-2 is provided on the side away from the sub-platform 2. A torsion spring hinge 1-3 is connected between one side of the protective door 1-2 and the corresponding protective frame 1-1, and a protective lock 1-4 is provided on the other side. A limiting plate 1-5 extending toward the protective lock 1-4 is fixedly installed on the inner side of the protective frame 1-1 corresponding to the protective lock 1-4. The protective lock 1-4 includes a blocking bar 1-4-1 arranged in the middle of the protective door 1-2 and extending to the inner side of the protective frame 1-1, and a locking tongue 1-4-2 elastically installed in the blocking bar 1-4-1 along the horizontal direction. The locking tongue 1-4-2 extends to the outer side of the limiting plate 1-5, thereby realizing two-way locking and further improving the safety of use.

[0042] (Example 2)

[0043] The structure of this embodiment is similar to that of embodiment 1, except that the structure of the locking portion 4 is different. Figure 5 and Figure 6 As shown, the base 4-1 includes an integrally formed first bottom plate 4-1-4 and a first mounting plate 4-1-5 arranged perpendicular to the first bottom plate 4-1-4, the foot pedal 4-2 is hinged on the first mounting plate 4-1-5, the first bottom plate 4-1-4 is provided with a first through hole facing the limiting portion 3, the locking shaft 4-3 passes through the first through hole and is sleeved with a counterweight block 4-7 arranged along the axial limit, and the lower end of the counterweight block 4-7 is fixedly connected with a limit nut 4-8 having an outer diameter larger than the first through hole. When the external force applied to the foot pedal 4-2 is removed, the locking shaft 4-3 can be quickly reset under the action of gravity to keep locked. The lower end of the locking shaft 4-3 is provided with a first annular step 4-3-2, the upper end of the first annular step 4-3-2 extends into the counterweight 4-7, and the counterweight 4-7 is provided with a first spring 4-9 sleeved on the locking shaft 4-3, and the two ends of the first spring 4-9 are respectively in contact with the inner top of the counterweight 4-7 and the top of the first annular step 4-3-2. The first spring 4-9 is provided to realize the elastic connection between the counterweight 4-7 and the locking shaft 4-3, and when the limit nut 4-8 on the counterweight 4-7 contacts the first bottom plate 4-1-4, the first spring 4-9 is used to realize shock absorption, thereby effectively reducing noise.

[0044] The utility model provides two locking parts with different structures, both of which realize foot-operated unlocking / locking. Compared with the locking method of the traditional telescopic platform, the structure is simple, and locking and opening can be achieved without two-handed operation, so that the operator can better control the movement of the sub-platform, improving the convenience and safety of use, and adding a protective door with a two-way locking mechanism to further improve the safety of use.

[0045] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic platform for aerial work, characterized in that: It includes a main platform and a sub-platform that slides with the main platform in a horizontal direction. The lower part of the side of the main platform is provided with a plurality of limit parts arranged and distributed along the moving direction of the sub-platform. The lower part of the sub-platform is provided with a locking part that is adapted to the limit part. The locking part includes a base fixedly mounted on the sub-platform and a foot pedal rotatably arranged on the base. One end of the foot pedal is connected to a locking shaft arranged in a vertical direction. The locking shaft is inserted in the limit part and is suitable for being separated from the limit part when the other end of the foot pedal is subjected to a downward external force.

2. The telescopic platform for aerial work according to claim 1, characterized in that: The base includes an integrally formed first bottom plate and a first mounting plate arranged perpendicular to the first bottom plate. The foot pedal is hinged on the first mounting plate. A first through hole opposite to the limiting portion is opened on the first bottom plate. The locking shaft passes through the first through hole and is externally sleeved with a counterweight block arranged along the axial limit. The lower end of the counterweight block is fixedly connected to a limiting nut whose outer diameter is larger than the first through hole.

3. The telescopic platform for aerial work according to claim 2, characterized in that: A first annular step is provided at the lower end of the locking shaft, and the upper end of the first annular step extends into the counterweight block. A first spring is provided in the counterweight block and is sleeved on the locking shaft. The two ends of the first spring are respectively in contact with the inner top of the counterweight block and the top of the first annular step.

4. The telescopic platform for aerial work according to claim 1, characterized in that: The base includes an integrally formed second bottom plate, a boss and a second mounting plate arranged perpendicular to the second bottom plate, the foot pedal is hinged on the second mounting plate, the center of the boss is provided with a second through hole that penetrates the second bottom plate and faces the limiting portion, the limiting sleeve is fixedly connected in the second through hole, the locking shaft penetrates the limiting sleeve and is elastically connected to the limiting sleeve along the longitudinal direction.

5. The telescopic platform for aerial work according to claim 4, characterized in that: A second annular step is provided at the lower end of the locking shaft, and the upper end of the second annular step extends into the limiting sleeve. A second spring is provided in the limiting sleeve and is sleeved on the locking shaft. The two ends of the second spring are respectively in contact with the inner top of the limiting sleeve and the top of the second annular step.

6. The telescopic platform for aerial work according to claim 4, characterized in that: The second mounting plates are provided with two and are arranged opposite to each other, and the footrest is hingedly arranged between the two second mounting plates.

7. The telescopic platform for aerial work according to claim 4, characterized in that: The top of the other end of the foot pedal is provided with anti-skid grooves parallel to each other.

8. The telescopic platform for aerial work according to claim 1, characterized in that: The top of the locking shaft passes through the foot pedal and is threadedly connected with an adjusting nut.

9. The telescopic platform for aerial work according to claim 1, characterized in that: Protective frames are provided on both sides of the main platform and a protective door is provided on the side away from the secondary platform. A torsion spring hinge is connected between one side of the protective door and the corresponding protective frame, and a protective lock is provided on the other side. A limiting plate extending toward the protective lock is fixedly installed on the inner side of the protective frame corresponding to the protective lock. The protective lock includes a baffle bar provided in the middle of the protective door and extending to the inner side of the protective frame, and a lock tongue elastically installed in the baffle bar along the horizontal direction, and the lock tongue extends to the outer side of the limiting plate.

10. The telescopic platform for aerial work according to claim 1, characterized in that: The limiting portion includes relatively arranged stoppers, a slot adapted to the locking shaft is formed between the two stoppers, and an upwardly protruding limit block is provided on the stopper at the end of the extension direction of the auxiliary platform, and the limit block is higher than the bottom of the locking portion.

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