CN218912775U

CN218912775U - Ascending ladder

Info

Publication number: CN218912775U
Application number: CN202222962856.XU
Authority: CN
Inventors: 程远禄; 邹志程; 李小龙
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-04-25
Anticipated expiration: 2032-11-07

Abstract

The utility model belongs to the field of climbing tools, and discloses a climbing ladder, which comprises: a base; the lap joint platform is positioned above the base; the ladder frame comprises two swing rod groups and a plurality of pedals, wherein the two swing rod groups are arranged in parallel at intervals along a first direction, the pedals are arranged between the two swing rod groups, each swing rod group comprises two swing rods which are arranged in parallel at intervals along a second direction perpendicular to the first direction, the upper end and the lower end of each swing rod are respectively and pivotally connected to the lap joint platform and the base, and the two ends of each pedal along the first direction are pivotally connected to the two swing rods; and the locking type gas spring can drive each swinging rod to swing synchronously so as to adjust the height of the lap joint platform. By adopting the ascending ladder disclosed by the utility model, the height and the rigid locking of the ascending ladder can be adjusted under the condition of no power device, the operation is simple and safe, the ascending ladder has good universality, a certain space can be saved, and the damage and pollution to the surface can be reduced.

Description

Ascending ladder

Technical Field

The utility model relates to the technical field of climbing tools, in particular to a climbing ladder.

Background

When the medium-and-large-sized mechanical products are manufactured, operators need to operate on the products with the height of 1-5 meters, the operators need to climb onto the mechanical products to operate at high altitude by means of a climbing ladder, and the existing climbing methods mainly comprise three types: firstly, workers climb and Gao Konghang walk by utilizing the product structure, but the high risk exists, and the coated parts are easy to pollute and damage. Secondly, according to the heights of various types of products, ascending ladders with different heights are manufactured, but the tooling universality is poor, the tooling cannot adapt to the height change of new products, and the workshops are required to store the ascending ladders with multiple types, so that the occupied space is large. Thirdly, the aerial working platform is utilized to lift the workers to the required height, then the workers are turned over and spanned to the products by the aerial working platform to operate, but the cost of using the aerial working platform is high, the aerial working platform needs a power unit, occupies large space, is not suitable for frequent and multiple uses in a workshop with limited space, and has the risk of collision with travelling crane, products and the like in the workshop.

Disclosure of Invention

Aiming at least one defect or deficiency in the prior art, the utility model provides the ascending ladder, which can realize height conversion without a power device, is simple and safe to operate, has good universality, can save a certain space, and can effectively avoid damage and pollution to the surfaces of parts caused by collision and treading of products.

To achieve the above object, the present utility model provides a climbing ladder comprising:

a base;

the lap joint platform is positioned above the base;

the ladder frame comprises two swing rod groups and a plurality of pedals, wherein the two swing rod groups are arranged in parallel at intervals along a first direction, the pedals are arranged between the two swing rod groups, each swing rod group comprises two swing rods which are arranged in parallel at intervals along a second direction perpendicular to the first direction, the upper end and the lower end of each swing rod are respectively and pivotally connected to the lap joint platform and the base, and the two ends of each pedal along the first direction are respectively and pivotally connected to the two swing rods; and

and the locking type gas springs can drive each swinging rod to swing synchronously so as to adjust the height of the lap joint platform.

Optionally, two ends of the locking type gas spring are respectively and pivotally connected to two swinging rods in the swinging rod group.

Optionally, two ends of the locking type gas spring are respectively and pivotally connected to the base and any one of the swinging rods.

Optionally, the step-up ladder comprises an auxiliary locking structure for auxiliary locking of the swing rod.

Optionally, the auxiliary locking structure includes a positioning sleeve, a positioning pin, a stop hook and a plurality of positioning holes, the positioning sleeve is fixedly connected to the swinging rod and extends along the length direction of the swinging rod, the positioning pin includes a positioning pin sleeving section which is slidably sleeved in the positioning sleeve and a positioning pin stop section which extends from the peripheral wall of the positioning pin sleeving section along the transverse direction, the stop hook is fixedly connected to the swinging rod, and a plurality of positioning holes are sequentially formed on the base along the second direction;

the swing rod can be switched between a movable state and a plurality of locking states, and in the movable state, the locating pin stop section and the stop hook form up-and-down abutting connection, so that the lower end of the locating pin sleeve connection section is separated from contact with the plurality of locating holes; in any one of the locking states, the stop section of the positioning pin is positioned below the stop hook, and the lower end of the sleeve section of the positioning pin penetrates into the corresponding positioning hole.

Optionally, the base includes base main part and base extension, the base extension connect in the base main part is followed the one end of second direction just follows the second direction extends the setting, each the swinging arms all pivot connect in base main part just all towards base extension slope extends the setting.

Optionally, the base main body portion and the bottom of base extension portion all are equipped with a plurality of truckles, the base main body portion is higher than the base extension portion sets up.

Optionally, two ends of the base extension portion along the second direction are respectively formed into an extension portion connection end and an extension portion extension end, the extension portion connection end is connected with the base main body portion, and along the first direction, a span of the extension portion extension end is smaller than a span of the extension portion connection end.

Optionally, the base extension portion is formed as a base extension portion capable of extending and retracting in the second direction with respect to the base main body portion, and an extension portion storage area for storing the base extension portion is formed below the base main body portion.

Optionally, at least a partial pad on the bottom surface of the lapping platform is provided with a protection pad, and the bottom surface contour of the protection pad is matched with the lapping surface contour of the structure to be lapped.

When the ascending ladder is used for ascending, the ascending ladder is moved to a required position, and the locking type gas springs drive the swinging rods to swing synchronously, so that the whole ladder frame swings synchronously, and the height of the lap joint platform can be adjusted. When the height of the lap joint platform is adjusted to a proper position, the lap joint platform can lock the ascending ladder by itself based on the principle characteristics of the locking type gas spring, so that the lap joint platform is locked at a required height, and the lap joint platform is lapped with a mechanical product, so that an operation platform is provided for operators.

Compared with the existing ascending ladder, the ascending ladder provided by the utility model realizes the height conversion of the lap joint platform through the locking type gas spring, does not need a power device, is simple and safe to operate, can adapt to mechanical products of different types, improves the universality of the ascending ladder, and correspondingly saves the manufacturing and using costs of the ascending ladder.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of a ladder according to an embodiment of the present utility model;

fig. 2 is a schematic view of the ladder of fig. 1 in a first orientation;

fig. 3 is a schematic view of the ladder of fig. 1 in a second direction;

fig. 4 is a schematic view of temporary storage of a plurality of the steps in fig. 1 in a locked state.

Reference numerals illustrate:

1. base 2 lap joint platform

3. Swing rod 4 locking type gas spring

5. Stop hook of positioning sleeve 6

7. Positioning pin sleeve joint section 8 positioning pin stop section

9. Protective pad

1a base body portion 1b base extension portion

Detailed Description

The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the embodiments of the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" or "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.

The utility model will be described in detail below with reference to the drawings in connection with exemplary embodiments.

Referring to fig. 1 to 3, an exemplary embodiment of the present utility model provides a climbing ladder including: base 1, overlap joint platform 2, ladder frame and locking formula gas spring 4.

Specifically, the base 1 may be fixed, and the ascending ladder may be carried to a desired position by a person or other mobile device; the base 1 may also be provided to be movable, and the movement of the ascending ladder may be achieved by a movement mechanism provided with the base 1. The lap joint platform 2 is positioned above the base 1 and is used for lap joint on a mechanical product to provide an operation platform for operators. The ladder frame comprises two swinging rod groups and a plurality of pedals, wherein the two swinging rod groups are arranged at intervals in parallel along the first direction, and the plurality of pedals are arranged between the two swinging rod groups. Each swing rod group comprises two swing rods 3, and the two swing rods 3 are arranged at intervals in parallel along a second direction perpendicular to the first direction. The upper and lower ends of each swinging rod 3 are respectively and pivotally connected to the lap joint platform 2 and the base 1, and the two ends of each pedal along the first direction are respectively and pivotally connected to the two swinging rods 3. The locking type gas spring 4 can drive each swinging rod 3 to swing synchronously so as to adjust the height of the lap joint platform 2.

Wherein, form four pole mechanisms between base 1, overlap joint platform 2 and the ladder frame correspondingly for when the ladder of ascending a height changes the height, footboard and overlap joint platform 2 can keep the horizontality all the time, need not to carry out angle adjustment, the operation of the operating personnel of being convenient for. The locking type gas spring 4 can be elastically or rigidly locked at any stretching or compressing position, so that the height adjustment of the climbing ladder can be completed without a power device.

Through setting up above-mentioned structure, when needs carry out the operation of ascending a height, will ascend a height the ladder remove required position earlier, through each swinging arms 3 synchronous swing of locking formula gas spring 4 drive for the whole synchronous swing of ladder frame to can adjust the height that overlap joint platform 2 is located. When the height of the lap joint platform 2 is adjusted to a proper position, the locking mechanism of the locking type gas spring 4 locks the ascending ladder, so that the height of the ascending ladder is limited at a required position. The lapping platform 2 is lapped with the product to be lapped, provides an operation platform for operators, and the operators operate the structure of the product to be lapped on the lapping platform 2.

Compared with the existing ascending ladder, the ascending ladder provided by the utility model realizes the height conversion of the ascending ladder through the locking type gas spring 4, does not need a power device, is simple and safe to operate, can adapt to mechanical products of different types, improves the universality of the ascending ladder, correspondingly saves the manufacturing and using costs of the ascending ladder, saves a certain occupied space, and can reduce the damage and pollution to the surfaces of the mechanical products.

In one embodiment, both ends of the locking type gas spring 4 are pivotally connected to two swing levers 3 in the swing lever group, respectively. Specifically, at the time of height adjustment, the locking mechanism of the locking type gas spring 4 is released, the locking type gas spring 4 drives each swing rod 3 to swing synchronously, so that the height of the lap joint platform 2 is adjusted, and when the height of the lap joint platform 2 is adjusted to a proper position, the locking mechanism of the locking type gas spring 4 locks the ladder frame, so that the height of the ascending ladder is limited to a required position.

In addition, both ends of the locking type gas spring 4 may be pivotally connected to the base 1 and any one of the swing levers 3, respectively. The locking type gas spring 4 can drive the ladder frame and the lap joint platform 2 to swing synchronously so as to achieve the purposes of adjusting the height of the lap joint platform 2 and realizing the free change of the height of the ascending ladder.

When the locking type gas springs 4 are arranged, one or more locking type gas springs 4 can be optionally arranged according to the type of the locking type gas springs 4, so long as the total spring force of the locking type gas springs 4 is approximately equal to the total weight force of the ladder frame and the lap joint platform 2.

In one embodiment, the step ladder comprises an auxiliary locking structure for auxiliary locking of the swing lever 3. Through the auxiliary locking structure, the swinging rod 3 can be switched between the movable state and a plurality of locking states, and misoperation during retraction or transfer of the ascending ladder is prevented, so that safety problems are caused or the condition of damaging a product to be overlapped is avoided.

Specifically, the auxiliary locking structure includes a positioning sleeve 5, a positioning pin, a stopper hook 6, and a plurality of positioning holes. The positioning sleeve 5 is fixedly connected to the swinging rod 3 and extends along the length direction of the swinging rod 3. The locating pin comprises a locating pin sleeve joint section 7 and a locating pin stop section 8, wherein the locating pin sleeve joint section 7 is slidably sleeved in the locating sleeve 5, and the locating pin stop section 8 extends out of the peripheral wall of the locating pin sleeve joint section 7 along the transverse direction. The stop hook 6 is fixedly connected to the oscillating bar 3. A plurality of positioning holes are sequentially formed on the base 1 in the second direction.

The swinging rod 3 can be switched between a movable state and a plurality of locking states, and in the movable state, the positioning pin stop section 8 and the stop hook 6 are in up-and-down abutting connection, so that the lower end of the positioning pin sleeve joint section 7 is out of contact with the plurality of positioning holes; in any one of the locking states, the positioning pin stop section 8 is positioned below the stop hook 6, and the lower end of the positioning pin sleeve section 7 penetrates into the corresponding positioning hole.

When the height of the lap joint platform 2 needs to be adjusted, the locating pin is slipped to a position where the stop section 8 of the locating pin and the stop hook 6 are in vertical abutting connection (the position where the locating pin is located as shown in fig. 3), at the moment, the swinging rods 3 are in a movable state, and the locking type gas spring 4 is released to drive each swinging rod 3 to swing synchronously, so that the purpose of adjusting the height of the ascending ladder is achieved. After the height adjustment of the ascending ladder is fixed at a certain position by the locking type gas spring 4, the locating pin is slid to enable the locating pin stop section 8 to be located below the stop hook 6, the lower end of the locating pin sleeve stage 7 penetrates into a corresponding locating hole (the locating pin is located in the position shown in fig. 4), at the moment, the swinging rod 3 is in a locking state, the whole ladder frame is not swung, and therefore misoperation of the ascending ladder in the retracting, releasing and transferring processes is prevented, and safety is ensured.

In one embodiment, the base 1 includes a base body portion 1a and a base extension portion 1b, the base extension portion 1b is connected to one end of the base body portion 1a along the second direction, and the base extension portion 1b is disposed to extend along the second direction. Each swinging rod 3 is pivotally connected to the base body portion 1a, and each swinging rod 3 is obliquely extended toward the base extension portion 1b. So set up, can improve the atress stability of base 1, avoid ascending a height the ladder and roll over when removing and height-adjusting.

In one embodiment, the bottoms of the base body portion 1a and the base extension portion 1b are each provided with a plurality of casters, and the provided plurality of casters may be formed as a moving mechanism of the ascending ladder, and in the process of transferring the ascending ladder, the ascending ladder may be transferred to a desired position by the casters sliding. Further, the base body portion 1a is provided higher than the base extension portion 1b. In this way, a certain height difference exists between the base main body part 1a and the base extension part 1b, so that the base extension part 1b can penetrate into the bottom of a product to be overlapped, and interference between the ascending ladder and the product to be overlapped is reduced. As shown in fig. 4, when a plurality of ascending ladders are stored together, the base extension portion 1b of the latter ascending ladder can go deep into the bottom of the base main body portion 1a of the former ascending ladder, thereby achieving a certain effect of saving storage space.

Further, both ends of the base extension portion 1b in the second direction are formed into an extension portion connecting end and an extension portion extending end, respectively, the extension portion connecting end is connected with the base main body portion 1a, and in the first direction, the span of the extension portion extending end is smaller than the span of the extension portion connecting end. So set up, the span of base extension 1b narrows gradually, can satisfy the bottom of treating overlap joint product or the bottom of base main part 1a with base extension 1b in depth better to reduce the interference between base extension 1b and the product of treating overlap joint, and save the purpose of certain occupation of land space.

In addition, the base extension portion 1b may be formed as a base extension portion that is capable of extending and retracting in the second direction with respect to the base main body portion 1a, and an extension portion storage area for storing the base extension portion may be formed below the base main body portion 1 a. The base extension part 1b is arranged to be of a telescopic structure, so that when the base extension part 1b can interfere with a product to be overlapped, the base extension part 1b is hidden in a telescopic part hiding area of the base extension part, interference between the base extension part 1b and the product to be overlapped is avoided, and the purpose of protecting the product to be overlapped is achieved.

In one embodiment, the bottom surface of the landing platform 2 is at least partially padded with a protective padding 9, the bottom surface contour of the protective padding 9 being arranged to match the landing surface contour of the structure to be lapped. The bottom surface of the lapping platform 2 is provided with the protection pad 9, which can play a certain role in protecting the product to be lapped. And the protection pad 9 is contoured according to the characteristics of the structure to be lapped, so that good contact between the ascending ladder and the product to be lapped can be effectively ensured, and surface damage and pollution of the product to be lapped are avoided. In addition, can also be according to treating overlap joint product structure setting have protective hose prevent unhook etc. structure and treat overlap joint product contact, strengthen overlap joint platform 2 and treat overlap joint product's structural connection stability, ensure ascending ladder and treat overlap joint product contact stability and not damage treat overlap joint product's surface.

The foregoing details of the optional implementation of the embodiment of the present utility model have been described in detail with reference to the accompanying drawings, but the embodiment of the present utility model is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present utility model within the scope of the technical concept of the embodiment of the present utility model, and these simple modifications all fall within the protection scope of the embodiment of the present utility model.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

In addition, any combination of various embodiments of the present utility model may be performed, so long as the concept of the embodiments of the present utility model is not violated, and the disclosure of the embodiments of the present utility model should also be considered.

Claims

1. A ladder of ascending a height, characterized in that, ladder of ascending a height includes:

a base (1);

the lap joint platform (2) is positioned above the base (1);

the ladder frame comprises two swing rod groups and a plurality of pedals, wherein the two swing rod groups are arranged in parallel at intervals along a first direction, the pedals are arranged between the two swing rod groups, each swing rod group comprises two swing rods (3) which are arranged in parallel at intervals along a second direction perpendicular to the first direction, the upper end and the lower end of each swing rod (3) are respectively and pivotally connected to the lap joint platform (2) and the base (1), and the two ends of each pedal along the first direction are respectively and pivotally connected to the two swing rods (3); and

and the locking type gas springs (4) can drive the swinging rods (3) to swing synchronously so as to adjust the height of the lap joint platform (2).

2. A ladder according to claim 1, characterized in that the two ends of the locking gas spring (4) are pivotally connected to the two swinging rods (3) of the swinging rod group, respectively.

3. A ladder according to claim 1, characterized in that the two ends of the locking gas spring (4) are pivotally connected to the base (1) and any one of the swinging rods (3), respectively.

4. A ladder according to claim 1, characterized in that it comprises an auxiliary locking structure for auxiliary locking of the swinging rod (3).

5. The climbing ladder according to claim 4, characterized in that the auxiliary locking structure comprises a positioning sleeve (5), a positioning pin, a stop hook (6) and a plurality of positioning holes, wherein the positioning sleeve (5) is fixedly connected to the swinging rod (3) and extends along the length direction of the swinging rod (3), the positioning pin comprises a positioning pin sleeve joint section (7) which is slidably sleeved in the positioning sleeve (5) and a positioning pin stop section (8) which extends transversely from the peripheral wall of the positioning pin sleeve joint section (7), the stop hook (6) is fixedly connected to the swinging rod (3), and a plurality of positioning holes are sequentially formed on the base (1) along the second direction;

the swinging rod (3) can be switched between a movable state and a plurality of locking states, and in the movable state, the locating pin stop section (8) and the stop hook (6) are in up-and-down abutting connection, so that the lower end of the locating pin sleeving section (7) is separated from contact with a plurality of locating holes; in any one of the locking states, the locating pin stop section (8) is located below the stop hook (6), and the lower end of the locating pin sleeve joint section (7) penetrates into the corresponding locating hole.

6. The climbing ladder according to claim 1, characterized in that the base (1) comprises a base body part (1 a) and a base extension part (1 b), the base extension part (1 b) is connected to one end of the base body part (1 a) along the second direction and extends along the second direction, and each swinging rod (3) is pivotally connected to the base body part (1 a) and extends obliquely towards the base extension part (1 b).

7. The climbing ladder according to claim 6, characterized in that the base body (1 a) and the base extension (1 b) are each provided with a plurality of casters at the bottom, the base body (1 a) being arranged higher than the base extension (1 b).

8. The climbing ladder according to claim 7, wherein both ends of the base extension (1 b) in the second direction are formed as an extension connection end and an extension end, respectively, the extension portion connecting end is connected with the base main body portion (1 a), and the span of the extension portion extending end is smaller than that of the extension portion connecting end along the first direction.

9. The ascending ladder according to claim 7, wherein the base extension portion (1 b) is formed as a base extension portion that is capable of extending and retracting in the second direction with respect to the base main body portion (1 a), and a extension portion storage area for storing the base extension portion is formed below the base main body portion (1 a).

10. The climbing ladder according to claim 1, characterized in that the bottom surface of the landing platform (2) is at least partially padded with a protective padding (9), the bottom surface contour of the protective padding (9) being arranged to match the landing surface contour of the structure to be lapped.