Engineering ladder supporting device

Abstract

The utility model relates to an engineering ladder supporting device which comprises a telescopic ladder assembly, the telescopic ladder assembly comprises a plurality of ladder units, each ladder unit is composed of two parallel ladder legs and a cross brace fixed between the ladder legs, the ladder legs are nested in sequence, the bottom end of the ladder unit at the lower end is rotatably connected with a transverse supporting assembly, C-shaped steel is arranged in the ladder unit at the upper end in a sliding mode, and the C-shaped steel is connected with the transverse supporting assembly. The top end of the C-shaped steel is in pin joint with a vertical supporting assembly, and the other end of the transverse supporting assembly is connected with the bottom end of the vertical supporting assembly in a fastened mode. A rotating rod and an elbow are rotationally connected in the C-shaped steel, a plurality of arc-shaped grooves are formed in the vertical supporting assembly, and when the C-shaped steel completely extends out of the ladder leg at the upper end, the elbow is lapped in one arc-shaped groove. According to the device, the vertical support and the transverse support which are matched with the telescopic ladder assembly are additionally arranged on the basis of the telescopic ladder assembly, the stability of the telescopic ladder assembly is improved, the vertical support assembly is adjusted to be vertical and can be close to a to-be-detected wall body, a detector can climb on the telescopic ladder assembly to face the wall body, and the strength of the concrete wall body can be conveniently detected by holding a rebound apparatus with a hand.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering ladders, in particular to an engineering ladder supporting device. Background Art

[0002] During the construction process, in order to measure the strength of concrete, the rebound method needs to be used for measurement after the concrete solidifies. During the measurement, the tester holds a rebound hammer and hits the concrete surface with a hitting rod, and measures the distance the weight is rebounded. The rebound value is used as an indicator of the strength of the concrete, and then the concrete strength is estimated. When measuring a higher position on the wall, a ladder tool is required; the existing single ladder itself does not have a stable structure, and it may damage the wall surface when placed on a concrete wall; if a stepladder is used, the tester needs to face the wall sideways, and the measured range of the wall is limited. The position of the stepladder needs to be adjusted multiple times to detect each position on the wall. Utility Model Content

[0003] The utility model aims to solve the problems that the single ladder damages the wall and the herringbone ladder is inconvenient to use, thereby providing an engineering ladder supporting device.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A construction ladder support device, a telescopic ladder frame includes multiple ladder units, each ladder unit is composed of two parallel ladder legs and a cross brace fixed between the ladder legs, and the ladder legs of the upper and lower ladder units are nested in sequence.

[0006] The bottom end of the lower ladder unit is rotatably connected with a transverse support assembly, and a C-shaped steel is slidably arranged in the upper ladder unit. The top end of the C-shaped steel is pinned with a vertical support assembly, and the vertical support assembly is a telescopic sleeve rod structure. The other end of the transverse support assembly is fastened to the bottom end of the vertical support assembly.

[0007] A rotating rod is rotatably connected inside the C-shaped steel, a downward elbow is arranged at the front end of the rotating rod, and a plurality of arc grooves cooperating with the elbows are opened on the vertical support assembly. When the C-shaped steel is fully extended from the upper ladder unit, the elbow overlaps in one of the arc grooves.

[0008] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0009] 1. The device adds a vertical support and a horizontal support on the basis of the telescopic ladder frame, forming a triangular structure with the telescopic ladder frame, thereby ensuring the overall support stability of the telescopic frame; the telescopic ladder frame of the device has thinner and thinner sections, so the strength of the upper ladder unit is weaker, and because the device adds a rotating rod structure design, the outer end of the rotating rod is supported on the vertical support assembly, thereby forming a triangular support structure on the top of the telescopic ladder frame, strengthening the strength of the top of the ladder frame, and preventing the ladder surface from collapsing and deforming.

[0010] 2. When in use, adjust the vertical support assembly vertically, close to the wall to be tested, so that the tester can climb on the telescopic ladder and face the wall, which is convenient for the handheld rebound tester to test the strength of the concrete wall;

[0011] 3. The vertical support assembly, the horizontal support assembly and the telescopic ladder of the device are connected as a whole. When in use, the telescopic amount of the telescopic ladder can be adjusted without adjusting them separately, which increases the practicality of the device.

[0012] As a preferred embodiment, a further technical solution of the utility model is:

[0013] The vertical support assembly comprises an upper sleeve rod and a lower sleeve tube, wherein the upper sleeve rod is sleeved in the lower sleeve tube, a plurality of limiting holes are opened on the side wall of the lower sleeve tube, a spring block matching with the limiting holes is fixed on the upper sleeve rod, and the spring block protrudes from the limiting holes to fix the upper sleeve rod and the lower sleeve tube. Through the above structure, it is convenient to adjust the telescopic amount of the vertical support assembly.

[0014] The upper end of the upper sleeve rod is provided with a vertical groove, and a pin is provided at the upper end of the inner side of the groove, and the top end of the C-shaped steel is movably sleeved on the pin. By providing the groove and the pin, the C-shaped steel can be pin-connected with the upper sleeve rod through the pin, so as to provide support for the telescopic ladder frame through the vertical support assembly.

[0015] The horizontal support assembly is composed of two parallel horizontal bars, and a sliding groove is provided in the horizontal bar along its length, and the lower end of the lower sleeve is tightly connected to the sliding groove. By setting the sliding groove, the position of the lower sleeve is fixed on the sliding groove, which is convenient for adjusting the position of the vertical support assembly.

[0016] An internal threaded sleeve is arranged between the two sliding grooves, a screw rod is slidably arranged in the sliding groove, the inner side of the screw rod is connected to the internal threaded sleeve rod, the outer side of the screw rod passes through the lower sleeve rod and is fixedly sleeved with a nut. Through the above structure, the screw rod and the internal threaded sleeve rod constitute a fastening structure to fix the position of the lower sleeve rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 The upper rear view stereogram;

[0019] Figure 3 is a schematic diagram of the support device in a fully extended state;

[0020] Figure 4 yes Figure 3 A partial enlarged view of part A;

[0021] Figure 5 is a schematic diagram of the support device in a semi-extended state;

[0022] Figure 6 is a schematic diagram of the support device in a retracted state;

[0023] In the figure: 11, C-shaped steel; 12, rotating rod; 121, elbow; 13, ladder leg; 14, cross brace; 21, upper sleeve rod; 211, arc groove; 22, lower sleeve; 23, push rod; 24, spring block; 25, limit hole; 31, internal threaded sleeve; 32, cross bar; 321, sliding groove. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0025] See attached Figure 1-6 The present embodiment discloses a construction ladder support device, wherein the telescopic ladder frame comprises a plurality of ladder units, each of which is composed of two parallel ladder legs 13 and a cross brace 14 fixed between the ladder legs 13, the ladder legs 13 and the cross brace 14 forming an H shape, and the ladder legs 13 of the upper and lower ladder units are nested in sequence, characterized in that:

[0026] The bottom end of the lower ladder unit is rotatably connected with a transverse support assembly, and a C-shaped steel 11 is slidably arranged in the upper ladder unit. The top end of the C-shaped steel 11 is pinned with a vertical support assembly, and the vertical support assembly is a telescopic sleeve rod structure, and the other end of the transverse support assembly is fastened to the bottom end of the vertical support assembly;

[0027] A rotating rod 12 is rotatably connected inside the C-shaped steel 11, and a downward elbow 121 is provided at the front end of the rotating rod 12. A plurality of arc grooves 211 cooperating with the elbows 121 are opened on the vertical support assembly. When the C-shaped steel 11 is fully extended from the upper ladder unit, the elbow 121 overlaps in one of the arc grooves 211.

[0028] The present embodiment adds a vertical support and a lateral support to the telescopic ladder frame, forming a triangular structure with the telescopic ladder frame, thereby increasing the stability of the telescopic ladder frame. The telescopic ladder frame extends a rotating rod 12 and overlaps the vertical support assembly, thereby further increasing the stability of the top ladder frame. When in use, the vertical support assembly is adjusted vertically to be close to the wall to be inspected, so that the inspector can climb onto the telescopic ladder frame and face the wall, thereby facilitating the use of a handheld rebound tester to inspect the strength of the concrete wall. The vertical support assembly, the lateral support assembly and the telescopic ladder frame of the present device are all movably connected, and the telescopic amount of the telescopic ladder frame can be adjusted without adjusting them separately during use, thereby increasing the practicability of the device.

[0029] In this embodiment, the opening of the C-shaped steel 11 faces the vertical telescopic assembly, and a pin is fixed to the inner lower end of the C-shaped steel 11. The pin is in the same direction as the cross brace 14. The lower end of the rotating rod 12 is sleeved on the pin, and the rotating rod 12 is rotatably connected to the C-shaped steel 11 through the pin, which facilitates the rotation of the rotating rod 12 and places the front end elbow 121 of the rotating rod 12 in the arc groove 211 to increase the stability of the upper end of the device.

[0030] In this embodiment, the telescopic rod structure of the vertical support assembly includes an upper sleeve rod 21 and a lower sleeve tube 22, wherein the upper sleeve rod 21 is embedded in the lower sleeve tube 22, the length of the lower sleeve tube 22 is greater than the length of the upper sleeve rod 21, and the lower sleeve tube 22 is a cavity structure with an opening at the upper end, and the size of the cavity is greater than the size of the upper sleeve rod 21, so that the upper sleeve rod 21 can telescopically move in the lower sleeve tube 22; a plurality of limiting holes 25 are opened on the side wall of the lower sleeve tube 22 along its length, and the limiting holes 25 penetrate one side wall of the lower sleeve tube 22, and a spring block 24 matching the limiting holes 25 is fixed to the upper sleeve rod 21, and the spring block 24 protrudes from the limiting holes 25 to fix the upper sleeve rod 21 and the lower sleeve tube 22, and the spring block 24 is pressed to retract it into the cavity of the lower sleeve tube 22, so that the telescopic amount of the vertical telescopic assembly can be adjusted. Through the above structure, it is convenient to adjust the telescopic amount of the vertical support assembly.

[0031] In this embodiment, a vertical groove is provided at the upper end of the upper sleeve rod 21, and the direction of the groove is consistent with the telescopic direction of the telescopic ladder. A pin is provided at the upper end of the inner side of the groove. A top rod 23 is fixed between the top ends of the two upper sleeve rods 21, and the top ends of the two upper sleeve rods 21 are connected and fixed by the top rod 23, further increasing the stability of the vertical telescopic assembly; the top end of the C-shaped steel 11 is movably sleeved on the pin. By providing the groove and the pin, the C-shaped steel 11 can rotate in a large range with the upper sleeve rod 21 through the pin, so as to provide support for the telescopic ladder through the vertical support assembly.

[0032] In this embodiment, the lateral support assembly is composed of two parallel cross bars 32, the left end of the cross bar 32 is sleeved with a rotating shaft, the rotating shaft protrudes from the cross bar 32 and extends to both sides of the cross bar 32, and the bottom ends of the two lowest ladder legs 13 are provided with clamping grooves, and the two clamping edges of the clamping grooves are sleeved on the rotating shafts on both sides of the cross bar 32. Through the above structure, the two ladder legs 13 at the lowest ends are pinned to the left ends of the two cross bars 32 respectively. The two cross bars 32 are provided with sliding grooves 321 penetrating the left and right sides along their length. The sliding grooves 321 of the two cross bars 32 are located correspondingly. The lower end of the lower sleeve 22 is tightly connected to the sliding grooves 321. An internal threaded sleeve 31 is provided between the sliding grooves 321 on both sides. The diameter of the internal threaded sleeve 31 is larger than the size of the sliding groove 321, so that the two ends of the internal threaded sleeve 31 abut against the side walls of the cross bar 32 around the sliding groove 321. A screw is slidably provided in the sliding groove 321. The inner side of the screw is connected to the internal threaded sleeve 31. The outer side of the screw passes through the lower sleeve 22 and is fixedly sleeved with a nut. Specifically, a fixing plate is fixedly extended downwardly from the outer side of the lower end of the lower sleeve 22, and a through hole is opened on the fixing plate, through which the fixing plate is sleeved on the screw rod. When in use, the screw rod is passed through the through hole and the sliding groove 321, and connected to the internal threaded sleeve 31, thereby fixing the lower sleeve 22 and the cross bar 32. The sliding groove 321 is provided to facilitate adjustment of the position of the vertical telescopic sleeve; the screw rod and the internal threaded sleeve 31 constitute a fastening structure to fix the position of the lower sleeve 22.

[0033] The method of using this embodiment is: refer to Figure 6 , when not in use, the telescopic amount of the telescopic ladder and the vertical telescopic assembly can be adjusted to the minimum so that it does not occupy a large position; when in use, first stretch the vertical telescopic assembly, which can be adjusted to the required height through the hoisting structure at the construction site, or by laying down the side of the device and stretching it, and the length of the vertical telescopic assembly can be adjusted to the required height, and the spring block 24 pops out of the corresponding limit hole 25 on the lower sleeve 22, so that the position of the upper sleeve rod 21 and the lower sleeve 22 is fixed; rotate the vertical telescopic assembly to make it perpendicular to the cross bar 32, and slide it horizontally to the rightmost side of the sliding groove 321, and fix the vertical telescopic assembly on the cross bar 32 by bolts; driven by the vertical telescopic assembly, the telescopic ladder is gradually extended, and the inspection personnel can climb to a high place for inspection through the telescopic ladder; when the telescopic amount of the vertical telescopic assembly is the largest, the telescopic amount of the telescopic ladder is also the largest, and the uppermost rotating rod 12 is rotated downward by gravity, and the elbow 121 at the front end of the rotating rod 12 is overlapped in a suitable arc groove 211, thereby increasing the stability of the upper end of the telescopic ladder.

[0034] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A construction ladder support device, comprising a telescopic ladder frame, the telescopic ladder frame comprising a plurality of ladder units, each ladder unit comprising two parallel ladder legs (13) and a cross brace (14) fixed between the ladder legs (13), the ladder legs (13) of the upper and lower ladder units being nested in sequence, characterized in that: The bottom end of the lower ladder unit is rotatably connected to a transverse support assembly, a C-shaped steel (11) is slidably arranged in the upper ladder unit, the top end of the C-shaped steel (11) is pin-connected to a vertical support assembly, the vertical support assembly is a telescopic sleeve rod structure, and the other end of the transverse support assembly is tightly connected to the bottom end of the vertical support assembly; A rotating rod (12) is rotatably connected inside the C-shaped steel (11), a downwardly directed elbow (121) is arranged at the front end of the rotating rod (12), a plurality of arc-shaped grooves (211) cooperating with the elbows (121) are arranged on the vertical support assembly, and when the C-shaped steel (11) is fully extended from the upper ladder unit, the elbow (121) overlaps in one of the arc-shaped grooves (211).

2. The engineering ladder support device according to claim 1, characterized in that: The vertical support assembly comprises an upper sleeve rod (21) and a lower sleeve tube (22). The upper sleeve rod (21) is sleeved in the lower sleeve tube (22). A plurality of limiting holes (25) are opened on the side wall of the lower sleeve tube (22). A spring block (24) matching the limiting holes (25) is fixed on the upper sleeve rod (21). The spring block (24) protrudes from the limiting holes (25) to fix the upper sleeve rod (21) and the lower sleeve tube (22).

3. The engineering ladder support device according to claim 2, characterized in that: The upper end of the upper sleeve rod (21) is provided with a vertical groove, the upper end of the inner side of the groove is provided with a pin shaft, and the top end of the C-shaped steel (11) is movably sleeved on the pin shaft.

4. The engineering ladder support device according to claim 1, characterized in that: The transverse support assembly is composed of two parallel transverse rods (32), wherein a sliding groove (321) penetrating the left and right sides of the transverse rod (32) is provided along its length, and the lower end of the lower sleeve (22) is tightly connected to the sliding groove (321).

5. The engineering ladder support device according to claim 4, characterized in that: An internal threaded sleeve (31) is arranged between the two sliding grooves (321), a screw rod is slidably arranged in the sliding groove (321), the inner side of the screw rod is connected to the internal threaded sleeve (31), and the outer side of the screw rod passes through the lower sleeve (22) and is fixedly sleeved with a nut.

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