Stair climbing trolley for building decoration

Abstract

The utility model provides a stair climbing trolley for building decoration. The stair climbing trolley comprises a trolley body, a pull rod fixedly installed on the upper portion of the trolley body and two wheel assemblies symmetrically installed on the lower portion of the trolley body. The pull rod comprises a telescopic assembly, the telescopic assembly comprises an outer pipe and a telescopic pipe, the telescopic pipe is installed in the outer pipe in a telescopic mode, and the upper end of the telescopic pipe is exposed out of the outer pipe. A plurality of continuous round holes are formed in the telescopic pipe in a vertical linear array mode, a marble element is installed in the outer pipe in a sliding mode, the marble element comprises a plate body, a plurality of marbles are installed on one side face of the plate body in a vertical linear array mode, and the marbles are matched with the round holes in the lower portion of the telescopic pipe. A plurality of spring elements are installed between the other side face of the plate body and the side wall of the outer pipe. By means of the arrangement, stretching and retracting of the pull rod can be achieved, and meanwhile the stretching and retracting length of the pull rod can be accurately controlled so as to meet the using requirements of constructors of different heights for the stair climbing trolley.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering construction, in particular to a stair climbing trolley for building decoration. Background Art

[0002] In building decoration projects, construction workers often use stair climbing trolleys to carry construction equipment or materials upstairs. When adjusting the height, existing stair climbing trolleys use telescopic tubes. An outer tube is installed on the upper end of the vehicle body, and a handle is installed on the upper end of the inner tube. A threaded hole is set on one side of the outer tube, and a tightening bolt is installed in the threaded hole. The tightening bolt extends into the outer tube and presses against the inner tube. When the height needs to be adjusted, the tightening bolt is loosened to move the inner tube. When the inner tube moves to the desired position, the tightening bolt is tightened to press against the inner tube.

[0003] However, the existing stair climbing trolley is not convenient for accurately adjusting the telescopic distance of the inner tube; secondly, when the inner tube is moved to the required position to tighten the tightening bolts, it is necessary to hold the inner tube to keep it stable, and the operation is extremely inflexible; and, the stair climbing trolley is often used to transport heavier decoration materials, and long-term use will cause damage to the inner tube, outer tube and tightening bolts, affecting the stability of the stair climbing trolley.

[0004] Therefore, there is an urgent need for a stair climbing trolley for building decoration that can solve the above problems. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a stair climbing trolley for building decoration, comprising a vehicle body, a pull rod fixedly installed on the upper part of the vehicle body, and two sets of wheel assemblies symmetrically installed on the lower part of the vehicle body; wherein,

[0006] The vehicle body is configured in an L shape, including a pallet and a support column vertically fixedly installed at the rear end of the pallet;

[0007] The pull rod is configured as a bilaterally symmetrical structure in an overall U-shape, including a U-shaped handle and a telescopic component whose upper end is fixedly connected to the end of the handle and whose lower end is fixedly connected to the upper end of the support column.

[0008] The telescopic assembly comprises an outer tube, and a telescopic tube which is telescopically installed inside the outer tube and the upper end of which is exposed from the outer tube;

[0009] The telescopic tube includes an upper portion configured as a solid cylinder, the upper end of which is fixedly connected to the handle, and a lower portion configured as a solid semi-cylinder and located below the upper portion, wherein a plurality of continuous circular holes are formed in a vertical linear array on a rectangular end surface of the lower portion;

[0010] The outer tube includes an outer tube upper portion close to the handle, an outer tube lower portion close to the support column, and an outer tube middle portion located between the outer tube upper portion and the outer tube lower portion;

[0011] The upper portion of the outer tube is configured as a hollow cylinder whose diameter matches that of the upper portion of the telescopic tube; half of the middle portion of the outer tube is configured as a cavity portion, and the other half is configured as a solid portion, wherein the shape and size of the cavity portion matches those of the lower portion of the telescopic tube;

[0012] The entity part is provided with a rectangular groove connected with the cavity part, wherein the outer wall of the entity part is provided with a recess connected with the rectangular groove above and below the rectangular groove, and the entity part is provided with an outer tube step cover matching with the rectangular groove and the recess, and the outer tube step cover is fixed to the entity part by a fastener;

[0013] A marble element is slidably installed in the rectangular groove. The marble element includes a plate body, and a plurality of marbles are installed in a vertical linear array on one side of the plate body. The marbles match the circular holes on the lower part of the telescopic tube. A plurality of spring elements are installed between the other side of the plate body and the side wall of the outer tube step cover.

[0014] Preferably, the plate body is configured as a stepped plate body, the stepped plate body comprises a small plate body and a large plate body, the small plate body is close to the cavity part, the large plate body is close to the solid part, the marbles are installed on the side of the small plate body, and the spring element is installed on the side of the large plate body;

[0015] The rectangular groove is configured as a stepped groove matching the stepped plate body.

[0016] Preferably, the spring element is installed in a chamber formed by the spring right cover and the spring left cover, the spring right cover comprises a right fixing plate, one side of the right fixing plate is fixedly installed on the large plate body, and the other side is fixedly installed with a right spring sleeve configured as a hollow cylinder, the end of the right spring sleeve away from the right fixing plate is open, and one end of the spring element passes through the right spring sleeve and is fixed on the right fixing plate;

[0017] The spring left cover comprises a left fixing plate, one side of which is fixedly mounted on the inner wall of the outer tube step cover, and the other side of the left fixing plate is fixedly mounted with a left spring tube sleeve configured as a hollow cylinder, one end of the left spring tube sleeve away from the outer tube step cover is open, and the other end of the spring element passes through the left spring tube sleeve and is fixed on the left fixing plate;

[0018] The left spring tube sleeve and the right spring tube sleeve are configured in a mode of large and small tubes being nested.

[0019] Preferably, a threaded hole is provided on the outer tube stepped cover, and the screw rod of the bolt passes through the threaded hole and contacts the outer side surface of the large plate body.

[0020] Preferably, the support columns are connected by a frame, and the frame is configured as a plurality of arc-shaped rods.

[0021] Compared with the prior art, the advantages of the utility model are:

[0022] 1. A plurality of marbles are installed by setting up a marble element array, and the marbles match the circular holes on the lower part of the telescopic tube. A plurality of spring elements are installed between the outer side surface of the large plate body of the marble element and the outer tube stepped cover, which can not only realize the extension and retraction of the pull rod, but also accurately control the extension and retraction length of the pull rod.

[0023] 2. The spring element can ensure the stability of the pull rod when it is extended and retracted. There is no need to hold the handle when tightening the bolt to tighten the marble element, which greatly improves the convenience of operation.

[0024] 3. The plate body of the marble element is configured as a stepped plate body, and a stepped groove matching the stepped plate body is opened in the middle of the solid part, which maintains the stability of the marble element after being installed in the stepped groove

[0025] 4. The telescopic assembly is easy to install and disassemble, and it is easy to replace parts, which is highly practical.

[0026] 5. A threaded hole is provided on the stepped cover of the outer tube, and the screw of the bolt passes through the threaded hole and contacts the outer side surface of the large plate body, thereby ensuring that the pull rod has sufficient stability after the height is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 The overall structure diagram of the stair climbing trolley for building decoration;

[0029] Figure 2 This is a front view of the telescopic components of the stair climbing trolley for building decoration;

[0030] Figure 3 for Figure 2 Middle AA section;

[0031] Figure 4 for Figure 3 The local large-scale drawing at point A in the middle;

[0032] Figure 5 This is a first-person exploded view of the telescopic components of the stair climbing trolley for building decoration;

[0033] Figure 6 This is an exploded view from the second perspective of the telescopic components of the stair climbing trolley for building decoration;

[0034] Figure 7 This is a first-person view of the outer tube structure in the telescopic assembly;

[0035] Figure 8A second perspective view of the outer tube structure in the telescopic assembly;

[0036] Fig. 9 It is a structural diagram of the telescopic tube in the telescopic assembly;

[0037] Fig.10 This is the structural diagram of the marble original part in the telescopic assembly;

[0038] Fig.11 This is the structural diagram of the outer pipe groove cover in the telescopic assembly.

[0039] In the figure, the vehicle body 1000, the support plate 1100, the support column 1200, and the frame 1210;

[0040] Pull rod 2000, handle 2100, telescopic assembly 2200,

[0041] Outer tube 2210, outer tube upper part 2211, outer tube middle part 2212, cavity part 2213, solid part 2214, rectangular groove 2215, outer tube stepped cover 2216, stepped groove 2217, recess 2218, outer tube lower part 2219,

[0042] Telescopic tube 2220, upper part 2221, lower part 2222, round hole 2223,

[0043] Marble element 2230, marble 2231, stepped plate 2232, small plate 2233, large plate 2234,

[0044] Spring element 2240,

[0045] Spring right cover 2250, right fixing plate 2251, right spring tube sleeve 2252,

[0046] Spring left cover 2260, left fixing plate 2261, left spring tube sleeve 2262,

[0047] Threaded hole 2270, bolt 2271;

[0048] Wheel assembly 3000. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0050] like Figure 1-11As shown, this embodiment provides a stair climbing vehicle for building decoration, including a vehicle body 1000, a pull rod 2000 fixedly installed on the upper part of the vehicle body 1000, and two sets of wheel assemblies 3000 symmetrically installed on the lower part of the vehicle body 1000.

[0051] The structure of the wheel assembly 3000 adopts the existing technology, which is understandable and easy to implement for those skilled in the art, so it will not be described in detail.

[0052] The vehicle body 1000 is configured in an L-shape, including a support plate 1100 and support columns 1200 vertically fixedly installed at the rear end of the support plate 1100, and the support columns 1200 are connected by a plate body or a frame.

[0053] It should be noted that the pull rod 2000 is configured as a bilaterally symmetrical structure that is U-shaped as a whole. In this embodiment, the structure of the pull rod 2000 will be described by taking a single side as an example.

[0054] The pull rod 2000 includes a U-shaped handle 2100 and a telescopic assembly 2200 whose upper end is fixedly connected to the end of the handle 2100 and whose lower end is fixedly connected to the upper end of the support column 1200 .

[0055] The telescopic assembly 2200 includes an outer tube 2210 and a telescopic tube 2220 which is telescopically installed inside the outer tube 2210 and the upper end of which is exposed outside the outer tube 2210, so that the length of the pull rod 2000 can be changed to meet the needs of construction workers of different heights.

[0056] In this embodiment, the upper portion 2221 of the telescopic tube 2220 is configured as a solid cylinder, and the upper end is fixedly connected to the handle 2100; the lower portion 2222 of the telescopic tube 2220 is configured as a solid semi-cylinder, located below the upper portion 2221, and the rectangular end face of the lower portion 2222 is provided with a plurality of continuous circular holes 2223 in a vertical linear array.

[0057] The outer tube 2210 includes an outer tube upper portion 2211 close to the handle 2100, an outer tube lower portion 2219 close to the support column 1200, and an outer tube middle portion 2212 located between the outer tube upper portion 2211 and the outer tube lower portion 2219. The outer tube upper portion 2211 is configured as a hollow cylinder whose diameter matches that of the upper portion 2221 of the telescopic tube, so that the upper portion 2221 of the telescopic tube can be embedded in the outer tube 2210; half of the outer tube middle portion 2212 is configured as a cavity portion 2213, and the other half is configured as a solid portion 2214, wherein the shape and size of the cavity portion 2213 match those of the lower portion 2222 of the telescopic tube, so that the lower portion 2222 of the telescopic tube can be embedded in the outer tube 2210.

[0058] The solid part 2214 is provided with a rectangular groove 2215 connected with the cavity part 2213, wherein the outer wall of the solid part 2214 is provided with a recess 2218 connected with the rectangular groove 2215 above and below the rectangular groove 2215, and the solid part 2214 is provided with an outer tube step cover 2216 matching the rectangular groove 2215 and the recess 2218, and the outer tube step cover 2216 is fixed to the solid part 2214 by fasteners.

[0059] A marble element 2230 is slidably installed in the rectangular groove 2215. The marble element 2230 includes a plate body, and a plurality of marbles 2231 are installed in a vertical linear array on the side of the plate body. The marbles 2231 match the circular holes 2223 on the lower part 2222 of the telescopic tube.

[0060] In order to prevent the marble element 2230 from entering the cavity portion 2213 after assembly, in the present embodiment, the plate body is configured as a stepped plate body 2232, including a small plate body 2233 and a large plate body 2234, the small plate body 2233 is close to the cavity portion 2213, the large plate body 2234 is close to the solid portion 2214, and the marble 2231 is installed on the outer side of the small plate body 2233; accordingly, the rectangular groove 2215 is configured as a stepped groove 2217 that matches the stepped plate body 2232.

[0061] A number of spring elements 2240 are installed between the side of the large plate body 2234 and the side wall of the outer tube step cover 2216. In order to ensure the stability of the spring elements 2240 when subjected to compression or stretching, in this embodiment, the spring elements 2240 are installed in a chamber formed by a spring right cover 2250 and a spring left cover 2260, and are installed between the outer side surface of the large plate body 2234 and the inner wall of the outer tube step cover 2216 through the spring right cover 2250 and the spring left cover 2260.

[0062] Specifically, the right spring cover 2250 includes a right fixing plate 2251, one side of the right fixing plate 2251 is fixedly mounted on the large plate body 2234, and the other side is fixedly mounted with a right spring sleeve 2252 configured as a hollow cylinder, the end of the right spring sleeve 2252 away from the right fixing plate 2251 is open, and one end of the spring element 2240 passes through the right spring sleeve 2252 and is fixed on the right fixing plate 2251; the left spring cover 2260 includes a left fixing plate 2261, a left fixing plate 2262, and a right spring sleeve 2252 configured as a hollow cylinder. One side of the plate 2261 is fixedly mounted on the inner wall of the outer tube step cover 2216, and the other side of the left fixed plate 2261 is fixedly mounted with a left spring tube sleeve 2262 configured as a hollow cylinder, and the left spring tube sleeve 2262 is open at one end away from the outer tube step cover 2216, and the other end of the spring element 2240 passes through the left spring tube sleeve 2262 and is fixed on the left fixed plate 2261; and the left spring tube sleeve 2262 and the right spring tube sleeve 2252 are configured in a mode of large and small tubes being nested. Through the above configuration, when the spring element 2240 is squeezed or stretched, it can not only be displaced in the horizontal direction, but also remain stable in the axial direction.

[0063] In this embodiment, in order to keep the outer tube 2210 and the telescopic tube 2220 relatively fixed so that the pull rod 2000 has stability after the height is adjusted, a threaded hole 2270 is opened on the outer tube step cover 2216, and the screw of the bolt 2271 passes through the threaded hole 2270 and contacts the outer side surface of the large plate body 2234.

[0064] Thus, the telescopic assembly 2200 of the stair climbing trolley for building decoration in this embodiment can be easily installed. Specifically, first, the marble element 2230 is installed in the rectangular groove 2215 of the outer tube 2210; secondly, the right fixing plate 2251 of the spring right cover 2250 is fixed to the outer side of the large plate body 2234, one end of the spring element 2240 is fixed to the right fixing plate 2251, and the right spring tube sleeve 2252 passes through the spring element 2240 and is fixed to the right fixing plate 2251; then, the fixing plate 2261 of the spring left cover 2260 is positioned to match the fixing plate 2251. Fixed to the inner wall of the large outer tube step cover 2216, the other end of the spring element 2240 is fixed to the fixed plate 2261, and the left spring tube sleeve 2262 passes through the spring element 2240 and is fixed to the fixed plate 2261; again, install the large outer tube step cover 2216 into the rectangular groove 2215 and the recess 2218, and fix it to the solid part 2214 through fasteners; finally, install the telescopic assembly 2200 into the outer tube 2210 from top to bottom, and when the circular hole 2223 of the telescopic assembly 2200 is matched with the marble 2231 of the marble element 2230, screw in all the bolts 2271.

[0065] In this embodiment, the process of realizing the extension and retraction of the pull rod of the stair climbing trolley for building decoration is as follows:

[0066] When the pull rod is extended, the bolt 2271 is screwed outward to leave space for the marble element 2230 to move horizontally, and the handle 2100 is pulled upward. The handle 2100 simultaneously drives the telescopic tube 2220 to squeeze the marble element 2230, and the marble 2231 squeezes the spring element 2240 to the left until the marble 2231 bounces from the corresponding circular hole 2223 into the adjacent previous circular hole 2223 and makes a "click" sound. The telescopic tube 2220 moves upward synchronously to extend the pull rod, and the extension distance of the pull rod is accurately grasped according to the number of "click" sounds. After the extension distance of the pull rod meets the requirements, all the bolts 2271 are screwed in to close the space for the horizontal movement of the marble element 2230, thereby ensuring the high stability of the stair climbing trolley when it is working; when the pull rod is shortened, the same applies to when the pull rod is extended.

[0067] Preferably, the support columns 1200 are connected by a frame 1210, and the frame 1210 is configured as a plurality of arc-shaped rods, so that when the stair climbing vehicle is carrying barrel-shaped decoration materials, the barrel-shaped decoration materials can also remain stable on the vehicle body 1000.

[0068] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A stair climbing vehicle for building decoration, comprising a vehicle body (1000), a pull rod (2000) fixedly mounted on the upper part of the vehicle body (1000), and two sets of wheel assemblies (3000) symmetrically mounted on the lower part of the vehicle body (1000); wherein: The vehicle body (1000) is configured in an L-shape, and includes a support plate (1100) and a support column (1200) vertically fixedly mounted on the rear end of the support plate (1100); The pull rod (2000) is configured as a bilaterally symmetrical structure in an overall U-shape, comprising a U-shaped handle (2100) and a telescopic assembly (2200) whose upper end is fixedly connected to the end of the handle (2100) and whose lower end is fixedly connected to the upper end of the support column (1200). The telescopic assembly (2200) comprises an outer tube (2210), and a telescopic tube (2220) which is telescopically installed inside the outer tube (2210) and the upper end of which is exposed outside the outer tube (2210); The telescopic tube (2220) comprises an upper portion (2221) configured as a solid cylinder, the upper end of which is fixedly connected to the handle (2100), and a lower portion (2222) configured as a solid semi-cylinder and located below the upper portion (2221), wherein a plurality of continuous circular holes (2223) are formed in a vertical linear array on a rectangular end surface of the lower portion (2222); The outer tube (2210) comprises an outer tube upper portion (2211) close to the handle (2100), an outer tube lower portion (2219) close to the support column (1200), and an outer tube middle portion (2212) located between the outer tube upper portion (2211) and the outer tube lower portion (2219); The upper portion (2211) of the outer tube is configured as a hollow cylinder whose diameter matches that of the upper portion (2221) of the telescopic tube; half of the middle portion (2212) of the outer tube is configured as a cavity portion (2213), and the other half is configured as a solid portion (2214), wherein the shape and size of the cavity portion (2213) match those of the lower portion (2222) of the telescopic tube; The solid part (2214) is provided with a rectangular groove (2215) connected to the cavity part (2213), wherein the outer wall of the solid part (2214) is provided with a recess (2218) connected to the rectangular groove (2215) above and below the rectangular groove (2215), and the solid part (2214) is provided with an outer tube step cover (2216) matching the rectangular groove (2215) and the recess (2218), and the outer tube step cover (2216) is fixed to the solid part (2214) by fasteners; A marble element (2230) is slidably installed in the rectangular groove (2215), and the marble element (2230) includes a plate body, and a plurality of marbles (2231) are installed in a vertical linear array on one side of the plate body, and the marbles (2231) match the circular holes (2223) on the lower part (2222) of the telescopic tube; a plurality of spring elements (2240) are installed between the other side of the plate body and the side wall of the outer tube step cover (2216).

2. The stair climbing trolley for building decoration according to claim 1 is characterized in that: The plate body is configured as a stepped plate body (2232), The stepped plate body (2232) includes a small plate body (2233) and a large plate body (2234), the small plate body (2233) is close to the cavity portion (2213), the large plate body (2234) is close to the solid portion (2214), the marble (2231) is installed on the side of the small plate body (2233), and the spring element (2240) is installed on the side of the large plate body; The rectangular groove (2215) is configured as a stepped groove (2217) that matches the stepped plate body (2232).

3. The stair climbing trolley for building decoration according to claim 1 is characterized in that: The spring element (2240) is installed in a chamber formed by a spring right cover (2250) and a spring left cover (2260). The spring right cover (2250) comprises a right fixing plate (2251), one side of the right fixing plate (2251) is fixedly mounted on the large plate body (2234), and the other side is fixedly mounted with a right spring sleeve (2252) configured as a hollow cylinder, one end of the right spring sleeve (2252) away from the right fixing plate (2251) is open, and one end of the spring element (2240) passes through the right spring sleeve (2252) and is fixed on the right fixing plate (2251); The spring left cover (2260) comprises a left fixed plate (2261), one side of the left fixed plate (2261) is fixedly mounted on the inner wall of the outer tube step cover (2216), the other side of the left fixed plate (2261) is fixedly mounted with a left spring tube sleeve (2262) configured as a hollow cylinder, one end of the left spring tube sleeve (2262) away from the outer tube step cover (2216) is open, and the other end of the spring element (2240) passes through the left spring tube sleeve (2262) and is fixed on the left fixed plate (2261); The left spring tube sleeve (2262) and the right spring tube sleeve (2252) are configured in a large and small tube nesting mode.

4. The stair climbing trolley for building decoration according to claim 1, characterized in that: The outer tube stepped cover (2216) is provided with a threaded hole (2270), and the screw rod of the bolt (2271) passes through the threaded hole (2270) and contacts the outer side surface of the large plate body (2234).

5. The stair climbing trolley for building decoration according to claim 1, characterized in that: The support columns (1200) are connected by a frame (1210), and the frame (1210) is configured as a plurality of arc-shaped rods.

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