CN212780300U

CN212780300U - Ladder fastening force testing tool

Info

Publication number: CN212780300U
Application number: CN202021474082.0U
Authority: CN
Inventors: 周晓英; 包明花; 陆丹亮
Original assignee: Hengkui Electronic Technology Suzhou Co ltd
Current assignee: Suzhou Zhongchuang Lingmai Aluminum Co., Ltd.
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-03-23
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to a ladder buckle force test tool, which comprises a bracket, the bracket is used for placing the ladder; a fixing mechanism is arranged on the bracket and used for fixing the lower ladder part of the ladder; a limit mechanism, It includes a driving wheel and a passive wheel, and the upper part of the ladder abuts between the driving wheel and the passive wheel, and can move along the extension and retraction direction of the ladder; A pushing cylinder at one end of the lower ladder part away from the lower ladder part, and the pushing cylinder can apply a pushing force to the upper ladder part. In the utility model, a fixing mechanism for fixing the lower part of the ladder is provided, and a limit mechanism for restricting the upper and lower positions of the upper part of the ladder is arranged, and the upper ladder is not restricted in the telescopic position, and the upper ladder is pushed by the pushing mechanism to test the card. The test tool can stably and reliably test the buckle force of the ladder, thereby improving the qualification rate of the ladder.

Description

Ladder fastening force testing tool

Technical Field

The utility model relates to a ladder production technical field, in particular to ladder power test fixture.

Background

Nowadays, the safety performance of the ladder is more and more emphasized, and a qualified ladder needs to be tested in various performances. The existing telescopic ladder generally comprises an upper ladder part and a lower ladder part, wherein force bearing is carried out between the upper ladder part and the lower ladder part through a buckle, and when the buckle buckling force is unqualified, safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ladder fastening force test fixture, its extreme condition that can reliable and stable detect ladder utensil.

In order to achieve the above purpose, the utility model provides a following technical scheme: a ladder fastening force testing tool comprises a support, wherein the support is used for placing a ladder; the fixing mechanism is arranged on the bracket and used for fixing the lower ladder part of the ladder; the limiting mechanism comprises a driving wheel and a driven wheel, and an upper ladder part of the ladder is abutted between the driving wheel and the driven wheel and can move along the telescopic direction of the ladder; and the pushing mechanism comprises a pushing cylinder which is positioned at one end of the upper ladder part far away from the lower ladder part, and the pushing cylinder can apply pushing force to the upper ladder part.

Further, the support includes split type first support and second support, first support supports down ladder portion, the second support supports the portion of going up ladder, fixed establishment sets up on the first support, stop gear and pushing mechanism set up on the second support.

Furthermore, the fixing mechanism comprises a stopping seat and a limiting adjusting bolt connected to the stopping seat, and the bottom of the lower ladder part is embedded in the stopping seat and is abutted tightly through the limiting adjusting bolt.

Furthermore, the stop seat comprises a first stop plate, a second stop plate and a third stop plate which are connected with each other, the first stop plate, the second stop plate and the third stop plate enclose an accommodating space for accommodating the lower ladder portion, and the number of the limiting adjusting bolts is two and is respectively in threaded connection with the first stop plate and the third stop plate.

Furthermore, the number of the fixing mechanisms is two, and the fixing mechanisms are symmetrically arranged on two sides of the support.

Further, stop gear is still including installing mount pad on the support with install lifting unit on the mount pad, the action wheel sets up lifting unit is last and can by lifting unit control goes up and down, the follower setting is in lifting unit is last and is located the action wheel below.

Further, the lifting assembly comprises a supporting seat connected with the mounting seat, a screw rod vertically installed on the supporting seat, and a sliding bearing screwed on the screw rod, and the driving wheel is fixed on the sliding bearing.

Further, a hand wheel for rotating the screw rod is arranged at the end part of the screw rod.

Furthermore, the number of the limiting mechanisms is two and the limiting mechanisms are symmetrically arranged on two sides of the support.

Furthermore, the supporting seat is fixedly connected with the mounting seat through a threaded fastener, and a waist-shaped hole for left and right adjustment of the supporting seat is formed in the supporting seat.

The beneficial effects of the utility model reside in that: the utility model discloses a set up the fixed establishment of fixed ladder utensil lower ladder portion, set up the stop gear who restricts ladder utensil upper ladder portion upper and lower position, and upper ladder portion is unrestricted in the extended position, promotes the limit atress of upper ladder portion with the test buckle through pushing mechanism, and this test fixture can reliable and stable test goes out the buckle power of detaining of ladder utensil to improve the qualification rate of ladder utensil.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is the structure schematic diagram of the utility model discloses after test fixture installs the ladder.

Fig. 2 is a partial enlarged view of fig. 1 at a.

Fig. 3 is a schematic structural diagram of the testing tool of the present invention.

Fig. 4 is a partial enlarged view of fig. 3 at B.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, in response to the ladder fastening force testing tool according to a preferred embodiment of the present invention, the ladder 100 includes a lower ladder portion 101, an upper ladder portion 102 and a buckle 103 therebetween, and the upper ladder portion 102 of the ladder 100 can extend and contract relative to the lower ladder portion 101 and is supported by the buckle 103. Ladder power test fixture is including the support that is used for placing ladder 100, the fixed establishment 1 of setting on the support, stop gear 2 and pushing mechanism 3, fixed establishment 1 is used for fixing the lower ladder portion 101 of ladder 100, stop gear 2 is used for limiting the upper and lower position of going up ladder portion 102, and can make it unrestricted on the flexible direction of ladder, pushing mechanism 3 is located the one end that lower ladder portion 101 was kept away from to going up ladder portion 102, and can exert the limit atress of thrust in order to test buckle 103 to going up ladder portion 102.

Referring to fig. 3, the support includes a first support 4 supporting the bottom of the lower step portion 101 and a second support 5 supporting the head of the upper step portion 102, the fixing mechanism 1 is disposed on the first support 4, and the limiting mechanism 2 and the pushing mechanism 3 are disposed on the second support 5. Through setting up split type first support 4 and second support 5, when the ladder 100 of different length of needs test, only need adjust first support 4 and second support 5 between the interval can, improve the adaptability of frock. Indeed, in other embodiments, the support may be an integral support extending from the bottom of the ladder 100 to the top of the ladder 100, which is not limited herein.

The fixing mechanism 1 comprises a stop seat 11 and a limit adjusting bolt 12 connected to the stop seat 11, and the bottom of the lower step part 101 is embedded in the stop seat 11 and is abutted by the limit adjusting bolt 12. Specifically, the stopper seat 11 includes a first stopper plate 111, a second stopper plate 112, and a third stopper plate 113, the first stopper plate 111 and the second stopper plate 112 are vertically fixed on the first bracket 4, the first stopper plate 111 and the second stopper plate 112 are vertically connected to each other, the third stopper plate 113 is horizontally fixed above the first stopper plate 111 and the second stopper plate 112, and a receiving space for receiving the lower step portion 101 is defined in front of the first stopper plate 111, the second stopper plate 112, and the third stopper plate 113. The fixing mechanisms 1 are arranged in two groups symmetrically on two sides of the first support 4, two first stop plates 111 are matched to limit the movement of the descending ladder part 101 in the left-right direction, two second stop plates 112 are matched to limit the movement of the descending ladder part 101 in the front-back direction, and two third stop plates 113 are matched to limit the movement of the descending ladder part 101 in the up-down direction. The limit adjusting bolts 12 are two in number and are respectively screwed on the first and

third stopper plates

111 and 113, thereby fastening the lower step 101. In other embodiments, the fixing mechanism 1 may also press the lower step portion 101 by using a cylinder in combination with a push plate, or press the lower step portion 101 by using a snap-fit manner.

The limiting mechanism 2 comprises an installation seat 21, a lifting assembly 22, a driving wheel 23 and a driven wheel 24, the installation seat 21 is fixed on the second support 5, the lifting assembly 22 is arranged on the installation seat 21, the driving wheel 23 is arranged on the lifting assembly 22 and can be controlled to lift by the lifting assembly 22, and the driven wheel 24 is arranged on the lifting assembly 22 and is located below the driving wheel 23. The ladder-mounting part 102 is supported between the driving wheel 23 and the driven wheel 24, and the driving wheel 23 and the driven wheel 24 can rotate, so that the ladder-mounting part 102 can freely move in the telescopic direction, and the purpose of testing the stress of the ladder buckle 103 is achieved.

As shown in fig. 4, the lifting assembly 22 includes a support seat 221 connected to the mounting seat 21, a screw 222 vertically installed on the support seat 221, a sliding bearing 223 screwed on the screw 222, and a hand wheel 224 located at an end of the screw 222, wherein the driving wheel 23 is fixed on the sliding bearing 223, and by rotating the hand wheel 224, the sliding bearing 223 moves along the screw 222, thereby adjusting the up-and-down position of the driving wheel 23. The limiting mechanisms 2 are also two groups and are symmetrically arranged on two sides of the second bracket 5 so as to limit two sides of the ascending part 102 respectively. In this embodiment, the supporting seat 221 is provided with a waist-shaped hole 2211, the mounting seat 21 is provided with a circular hole (not shown), and the waist-shaped hole 2211 and the circular hole are fixedly connected by a threaded fastener 2212. Through the waist-shaped hole 2211, the position of the supporting seat 221 in the left-right direction can be adjusted, and the ladders 100 with different widths can be limited between the driving wheel 23 and the driven wheel 24. Indeed, in other embodiments, the lifting assembly 22 may also control the lifting of the driving wheel 23 by means of a cylinder or the like.

As shown in fig. 3, the pushing mechanism 3 includes an electrical control unit 31 and a pushing cylinder 32 connected to the electrical control unit 31, the electrical control unit 31 is used for controlling the pushing cylinder 32 to push out the force meeting the test standard, a piston rod portion of the pushing cylinder 32 is provided with a pushing plate 33, and the pushing plate 33 is located at one end of the ascending step portion 102 far away from the descending step portion 101.

The working process of the utility model is as follows, firstly, the distance between the first support 4 and the second support 5 is adjusted according to the length of the ladder 100; then fixing the lower step part 101 of the ladder 100 at the fixing mechanism 1, placing the upper step part 102 of the ladder 100 between the driving wheel 23 and the driven wheel 24 of the limiting mechanism 2, and rotating the hand wheel 224 to adjust the distance between the driving wheel 23 and the driven wheel 24, so that the driving wheel 23 and the driven wheel 24 abut against the upper end surface and the lower end surface of the upper step part 102; then the electric control unit 31 is opened, the pushing cylinder 32 is controlled to push the pushing force meeting the test standard to the ladder part 102, so as to simulate the dead weight of the carrier on the ladder in the actual use process, and to detect whether the buckle can bear the gravity, and after the pushing plate 33 applies the pushing force to one end of the ladder part 102 and keeps a certain time, the pushing cylinder 32 retracts, and the whole test process is completed.

In summary, the following steps: the utility model discloses the test fixture can test out the buckle power of ladder utensil reliable and stable, improves the qualification rate of ladder utensil; furthermore, the utility model discloses the ladder utensil of testable different specifications, the suitability is high, has greatly practiced thrift the frock cost.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. a ladder buckle force test tool is characterized in that, comprises bracket, and described bracket is used for placing ladder;

a fixing mechanism, arranged on the bracket and used for fixing the lower ladder part of the ladder;

The limit mechanism includes a driving wheel and a passive wheel, and the upper ladder part of the ladder abuts between the driving wheel and the passive wheel, and can move along the extension and retraction direction of the ladder;

The pushing mechanism includes a pushing cylinder located at one end of the upper ladder part away from the lower ladder part, and the pushing cylinder can apply a pushing force to the upper ladder part.

2 . The ladder buckle force test tool according to claim 1 , wherein the bracket comprises a split first bracket and a second bracket, the first bracket supports the lower ladder portion, and the first bracket supports the lower ladder portion. 3 . Two brackets support the upper ladder, the fixing mechanism is arranged on the first bracket, and the limiting mechanism and the pushing mechanism are arranged on the second bracket.

3 . The ladder buckle force test tool according to claim 1 , wherein the fixing mechanism comprises a stopper seat and a limit adjustment bolt connected to the stopper seat, and the bottom of the lower ladder part is embedded in 3 . It is arranged in the stop seat and is pressed against the limit adjustment bolt.

4. The ladder buckle force test tool according to claim 3, wherein the stopper seat comprises a first stopper plate, a second stopper plate and a third stopper plate which are connected to each other, the first stopper plate A stop plate, a second stop plate and a third stop plate enclose an accommodation space for accommodating the lower ladder portion, and the limit adjustment bolts are two in number and are respectively screwed on the first stopper. plate and the third stop plate.

5 . The ladder buckle force test tool according to claim 4 , wherein the number of the fixing mechanisms is two groups and is symmetrically arranged on both sides of the bracket. 6 .

6 . The ladder buckle force test tool according to claim 1 , wherein the limiting mechanism further comprises a mounting seat mounted on the bracket and a lifting assembly mounted on the mounting seat, the The driving wheel is arranged on the lifting assembly and can be controlled by the lifting assembly, and the driven wheel is arranged on the lifting assembly and located under the driving wheel.

7 . The ladder buckle force test tool according to claim 6 , wherein the lifting assembly comprises a support seat connected with the mounting seat, a screw rod vertically installed on the support seat, and a screw bolted on the support seat. 8 . A sliding bearing on the screw, and the driving wheel is fixed on the sliding bearing.

8 . The ladder buckle force test tool according to claim 7 , wherein the end of the screw rod is provided with a hand wheel for rotating the screw rod. 9 .

9 . The ladder buckle force testing tool according to claim 8 , wherein the number of the limiting mechanisms is two groups and is symmetrically arranged on both sides of the bracket. 10 .

10 . The ladder buckle force test tool according to claim 7 , wherein the support seat and the mounting seat are fixedly connected by threaded fasteners, and the support seat is provided with a waist for left and right adjustment. 11 . type hole.