Truss

Abstract

The utility model relates to the technical field of carrying equipment, in particular to a truss which comprises four supporting columns, a bearing frame, a connecting frame and a lifting driving module. The supporting column comprises a steel column and a guide bar. The guide bars are fixedly arranged on the side faces of the sides, facing the adjacent steel columns, of the steel columns, the width of the guide bars is smaller than that of the steel columns, installation is convenient and fast, the transportation and storage cost is low, and the machining precision of the guide bars is higher. The bearing frame comprises a main frame body, four mounting bases and at least four sets of pressing wheel units. The four corners of the main frame body are each provided with a mounting base and at least one set of pressing wheel unit, one side of each mounting base is fixedly connected with the main frame body, the other side of each mounting base is provided with the corresponding pressing wheel unit, and the pressing wheel units are connected with the guide bars in a clamping mode and connected to the guide bars in a sliding mode. And the lifting driving module drives the main frame body to do lifting motion. The main frame body is connected to the corresponding guide bars in a sliding mode through the multiple sets of pressing wheel units, so that the bearing frame is more stable in the lifting motion process, and the control precision is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of carrying equipment, especially to truss. BACKGROUND

[0002] In the daily production and processing of materials, large equipment is needed to transfer and store the stacked materials. The existing stacking equipment adopts a gantry type truss structure to support the hoisting equipment. The support steel columns of the truss are integrally welded and formed, and the pressure wheels of the main frame body for hoisting are directly pressed on the steel columns. Due to the large welding error of the steel columns, the precision and stability of the lifting movement of the main frame body are poor. SUMMARY

[0003] To solve the technical defects in the background art, the purpose of the utility model is to provide a truss.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The truss comprises four support columns, a load-bearing frame slidingly arranged between the four support columns, a connecting frame arranged at the upper end of the four support columns, and a lifting drive module. The support column comprises a steel column and a guide strip. The guide strip is fixedly arranged on the side surface of the steel column facing the adjacent steel column. The length direction of the guide strip is vertically arranged perpendicular to the horizontal direction. The width of the guide strip is smaller than the width of the steel column. The load-bearing frame comprises a main frame body, four mounting seats, and at least four groups of pressure wheel units. The main frame body is arranged in a square shape. Each corner of the main frame body is provided with one mounting seat and at least one group of pressure wheel units. One side of the mounting seat is fixedly connected to the main frame body, and the other side of the mounting seat is provided with the pressure wheel unit. The pressure wheel unit is clamped and connected to the guide strip and slidingly connected to the guide strip. The lifting drive module is connected to the main frame body to drive the lifting movement of the main frame body.

[0006] By adopting the above technical solutions, the support column is composed of a steel column and a guide strip, which is convenient to install, has low transportation and storage costs, and has higher processing precision. The main frame body of the load-bearing frame is slidingly connected to the corresponding guide strip through four groups of pressure wheel units, which makes the load-bearing frame more stable during lifting and has higher control precision of the movement stroke.

[0007] Further, the pressing wheel unit comprises a sliding wheel, a bearing seat and at least two pressing wheels. The bearing seat is fixed on the mounting seat, the sliding wheel is rotationally connected to the bearing seat, and the circumferential side of the sliding wheel is in abutting connection with the side of the guide strip away from the steel column to reduce friction and make the lifting movement more stable. At least one pressing wheel is arranged on each side of the guide strip, and the pressing wheel is rotationally connected to the mounting seat through a connecting shaft. The circumferential side of the pressing wheel is in abutting connection with the corresponding side of the guide strip. The guide strip is located in the area enclosed by the sliding wheel and the plurality of pressing wheels, and is limited left and right to make the operation more accurate and stable.

[0008] Further, the main frame body protrudes from the position corresponding to the mounting seat and is provided with an installation column. The mounting seat comprises a first mounting plate, two limiting strips and a second mounting plate. One side of the first mounting plate is fixedly connected with the installation column, and both sides of the first mounting plate parallel to the length direction of the installation column are connected with one limiting strip. Both the limiting strips and the first mounting plate are screw-connected to the second mounting plate. The second mounting plate is provided with a first installation groove for installing the bearing seat and at least two second installation grooves for installing the connecting shaft on the side away from the first mounting plate. The load-bearing frame is spliced to be formed, has high installation and dismounting efficiency, is convenient to transport and store, and has low cost.

[0009] Further, the diameter of the second installation groove is greater than the diameter of the connecting shaft. The mounting seat further comprises an adjusting plate, which is fixed on the main frame body and located on one side of the second mounting plate. At least one first adjusting hole is arranged on the adjusting plate. One end of the first bolt passes through the first adjusting hole and abuts against the end of the second mounting plate, so that the circumferential side of the pressing wheel close to the adjusting plate abuts against the guide strip. The other side of the second mounting plate is provided with a second adjusting hole communicating with the adjacent second installation groove. One end of the second bolt passes through the second adjusting hole and is located in the corresponding second installation groove, and the end of the second bolt abuts against the corresponding connecting shaft, so that the corresponding pressing wheel abuts against the corresponding guide strip. The compatibility is high, the installation accuracy and the tightness of the structural connection are improved, and the pressing wheel and the guide strip are more closely fitted.

[0010] Further, in the same group of pressing wheel units, the pressing wheels and the sliding wheels are arranged in a staggered manner in the height direction to improve the compactness and rigidity of the structure.

[0011] Further, a group of pressing wheel units is arranged on the upper and lower sides of the mounting seat to make the operation more stable.

[0012] Further, the support column further comprises two limiting blocks. The two ends of the guide strip are provided with one limiting block, and the two limiting blocks are fixed on the steel column. The two limiting blocks are provided with U-shaped limiting grooves, and the ends of the two ends of the guide strip are clamped in the corresponding limiting grooves, so that the welding precision of the guide strip is improved, and the stability of the lifting movement of the load-bearing frame is improved.

[0013] Further, the truss further comprises a counterweight module. The counterweight module comprises a first counterweight, a second counterweight, a plurality of traction ropes and a plurality of wheel sliding units. The first counterweight is slidingly arranged between the adjacent two support columns in the width direction of the load-bearing frame. The second counterweight is slidingly arranged between the other two support columns. A plurality of wheel sliding units are correspondingly arranged on the side of the connecting frame away from the load-bearing frame along the arrangement path of the plurality of traction ropes. The first counterweight and the second counterweight are each arranged with at least one traction rope. One end of the traction rope is fixedly connected with the corresponding first counterweight or second counterweight, and the other end of the traction rope is sequentially wound on the corresponding plurality of wheel sliding units and penetrates through the connecting frame and is fixedly connected to the main frame body, so that the load of the lifting drive motor of the load-bearing frame can be reduced, the cost can be saved, and the motion efficiency can be improved.

[0014] Further, the support column further comprises a pressing plate, which is arranged on the steel column and located on one side of the guide strip. The side of the first counterweight and the second counterweight facing the support column is provided with a plurality of guide wheels. The first counterweight, the second counterweight and the load-bearing frame are arranged in position, compact in structure and high in space utilization. At least one guide wheel is arranged on each side of the pressing plate, so that the first counterweight or the second counterweight can move up and down along the corresponding two pressing plates, and the first counterweight or the second counterweight can be prevented from shaking and run more smoothly.

[0015] In summary, the beneficial effects of the utility model are:

[0016] The support column of the utility model is composed of a steel column and a guide strip, which is convenient to install, low in transportation and storage cost, and high in machining precision of the guide strip. The main frame body of the load-bearing frame is slidingly connected to the corresponding guide strip through four groups of pressing wheel units, so that the load-bearing frame is more stable during lifting movement and the control precision of the movement stroke is higher. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a use structure schematic diagram of an embodiment of the truss of the utility model.

[0018] Figure 2 is a structure schematic diagram of an embodiment of the truss of the utility model.

[0019] Figure 3 is Figure 2 is an enlarged schematic view of the structure A.

[0020] Figure 4 is Figure 2 is an enlarged schematic view of the structure B.

[0021] Figure 5 is a partial enlarged schematic view of an embodiment of the support column of the truss of the utility model.

[0022] Explanation of reference numerals in the drawings:

[0023] 1, truss; 2, support column; 21, steel column; 22, guide bar; 23, limiting block; 24, pressing plate; 3, bearing frame; 31, main frame body; 32, mounting seat; 321, first mounting plate; 322, limiting strip; 323, second mounting plate; 324, adjusting plate; 325, first adjusting hole; 326, second adjusting hole; 33, pressing wheel unit; 331, sliding wheel; 332, bearing seat; 333, pressing wheel; 334, connecting shaft; 34, mounting column; 4, connecting frame; 5, lifting drive module; 6, counterweight module; 61, first counterweight block; 62, second counterweight block; 63, traction rope; 64, wheel sliding unit; 65, guide wheel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, if there is a word such as '' a plurality of '' description, its meaning is one or more, the meaning of multiple is two and above, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second, third is described, it is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] The following will be combined with the drawings Figures 1-5 The embodiment of the utility model is further explained in detail.

[0028] The truss 1, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 It includes four support columns 2, a load-bearing frame 3 slidingly arranged between the four support columns 2, a connecting frame 4 arranged at the upper end of the four support columns 2 and a lifting drive module 5. The support column 2 includes a steel column 21 and a guide strip 22. The guide strip 22 is fixedly arranged on the side of the steel column 21 facing the adjacent steel column 21, and the length direction of the guide strip 22 is vertically arranged, and the width of the guide strip 22 is less than the width of the steel column 21. The load-bearing frame 3 includes a main frame body 31, four mounting seats 32 and at least four groups of compression wheel units 33. The main frame body 31 is arranged in a square shape, and one mounting seat 32 and at least one compression wheel unit 33 are arranged on each corner of the main frame body 31, one side of the mounting seat 32 is fixedly connected with the main frame body 31, the other side of the mounting seat 32 is provided with the compression wheel unit 33, and the compression wheel unit 33 is clamped and connected with the guide strip 22 and slidingly connected with the guide strip 22. The lifting drive module 5 is connected with the main frame body 31 to drive the main frame body 31 to move up and down.

[0029] Among them, the support column 2 is spliced by the steel column 21 and the guide strip 22, convenient to install, low transportation and storage cost, and the guide strip 22 has higher machining precision. The main frame body 31 of the load-bearing frame 3 is slidingly connected with the corresponding guide strip 22 through the four groups of compression wheel units 33, so that the load-bearing frame 3 is more stable during the lifting movement, and the control precision of the movement stroke is higher.

[0030] In some embodiments, please refer to Figure 3 、 Figure 4 、 Figure 5The pressing wheel unit 33 comprises a sliding wheel 331, a bearing seat 332 and at least two pressing wheels 333. The bearing seat 332 is fixed on the mounting seat 32, and the sliding wheel 331 is rotationally connected to the bearing seat 332. The circumferential side of the sliding wheel 331 is in abutting connection with the side of the guide strip 22 away from the steel column 21, thereby reducing friction and making the lifting movement more stable. At least one pressing wheel 333 is arranged on each side of the guide strip 22. The pressing wheel 333 is rotationally connected to the mounting seat 32 through a connecting shaft 334. The circumferential side of the pressing wheel 333 is in abutting connection with the corresponding side of the guide strip 22. The guide strip 22 is located in the area enclosed by the sliding wheel 331 and the plurality of pressing wheels 333, and is limited left and right, thereby making the operation more accurate and stable.

[0031] In some embodiments, please refer to Figure 2 、 Figure 3 、 Figure 4 The main frame body 31 is protrusively provided with an installation column 34 at the position corresponding to the mounting seat 32, so that the main frame body 31 is located on one side of the two steel columns 21, thereby increasing the installation space between the two steel columns 21, making the structure more compact, and making the installation and disassembly more convenient. The mounting seat 32 comprises a first installation plate 321, two limiting strips 322 and a second installation plate 323. One side of the first installation plate 321 is fixedly connected with the installation column 34. Each side of the first installation plate 321 parallel to the length direction of the installation column 34 is connected with one limiting strip 322. The two limiting strips 322 and the first installation plate 321 are screw-connected to the second installation plate 323, thereby improving the efficiency and accuracy of assembly. The second installation plate 323 is provided with a first installation groove for installing the bearing seat 332 and at least two second installation grooves for installing the connecting shaft 334 on the side away from the first installation plate 321. The load-bearing frame 3 is spliced into shape, has high installation and disassembly efficiency, is convenient for transportation and storage, and has low cost.

[0032] Preferably, in order to make the on-site installation and adjustment more convenient and fast, the groove diameter of the second installation groove is greater than the diameter of the connecting shaft 334. The mounting seat 32 further comprises an adjusting plate 324 fixed to the main frame body 31 and located on one side of the second installation plate 323. The adjusting plate 324 is provided with at least one first adjusting hole 325. The adjusting plate 324 and the second installation plate 323 are in abutting connection at the end of the second installation plate 323 through the first end of the first bolt penetrating through the first adjusting hole 325, so that the circumferential side of the pressing wheel 333 close to the adjusting plate 324 is in abutting connection with the guide strip 22. The other side of the second installation plate 323 is provided with a second adjusting hole 326 communicating with the adjacent second installation groove. The first end of the second bolt penetrates through the second adjusting hole 326 and is located in the corresponding second installation groove, and the end of the second bolt is in abutting connection with the corresponding connecting shaft 334, so that the corresponding pressing wheel 333 is in abutting connection with the corresponding guide strip 22. The compatibility is high, the installation accuracy and the tightness of the structural connection are improved, and the pressing wheel 333 and the guide strip 22 are more closely fitted.

[0033] Specifically, the adjusting plate 324 is provided with two first adjusting holes 325 corresponding to the position of each group of the pressing wheel units 33, and the second mounting plate 323 is provided with one second adjusting hole 326 corresponding to the position of each group of the pressing wheel units 33, which saves cost, improves assembly efficiency, ensures the installation accuracy of the second mounting plate 323 during the adjusting process, and prevents the second mounting plate 323 from being tilted and misaligned.

[0034] In some embodiments, in the same group of the pressing wheel units 33, the pressing wheels 333 and the sliding wheels 331 are arranged in a staggered manner in the height direction, which improves the compactness and rigidity of the structure.

[0035] In some embodiments, the upper and lower sides of the mounting seat 32 are each provided with a group of the pressing wheel units 33, which runs more smoothly.

[0036] In some embodiments, please refer to Figure 5 The support column 2 further includes two limiting blocks 23. One limiting block 23 is arranged at each end of the guide strip 22, and the two limiting blocks 23 are fixed to the steel column 21. The two limiting blocks 23 are each provided with a U-shaped limiting groove, and the ends of the two ends of the guide strip 22 are clamped in the corresponding limiting grooves, which improves the welding accuracy and assembly efficiency of the guide strip 22, thereby improving the stability of the lifting movement of the load-bearing frame 3.

[0037] In some embodiments, please refer to Figure 1 、 Figure 2 、 Figure 3 The truss 1 further includes a counterweight module 6. The counterweight module 6 includes a first counterweight block 61, a second counterweight block 62, a plurality of traction ropes 63, and a plurality of wheel sliding units 64. The first counterweight block 61 is slidingly arranged between the adjacent two support columns 2 in the width direction of the load-bearing frame 3. The second counterweight block 62 is slidingly arranged between the other two support columns 2. The plurality of wheel sliding units 64 are correspondingly arranged on the side of the connecting frame 4 away from the load-bearing frame 3 along the layout path of the plurality of traction ropes 63. The first counterweight block 61 and the second counterweight block 62 each correspondingly have at least one traction rope 63. One end of the traction rope 63 is fixedly connected to the corresponding first counterweight block 61 or second counterweight block 62, and the other end of the traction rope 63 is sequentially wound around the corresponding plurality of wheel sliding units 64 and penetrates through the connecting frame 4 to be fixedly connected to the main frame body 31, which can reduce the load of the lifting drive motor of the load-bearing frame 3, save cost, and improve the motion efficiency.

[0038] The first counterweight 61 and the second counterweight 62 are both provided with two traction ropes 63. The first counterweight 61 and the second counterweight 62 are provided with the same structure. The two sides of the first counterweight 61 and the second counterweight 62 are respectively provided with a traction rope 63, and the other end of the traction rope 63 extends upward to the upper surface of the connecting frame 4 and is wound around the pulley unit arranged on the connecting frame 4. Then, the traction rope 63 is bent downward from the middle of the connecting frame 4 and is fixed to the main frame body 31 through the connecting frame 4, so that the lifting of the main frame body 31 synchronously drives the first counterweight 61 and the second counterweight 62 to move together. The first counterweight 61 and the second counterweight 62 can balance the dead weight of the main frame body 31, so that the lifting operation of the load bearing frame 3 is more stable and the safety is higher.

[0039] Preferably, the support column 2 further comprises a pressing plate 24 arranged on the steel column 21 and located on one side of the guide bar 22, and the first counterweight 61 and the second counterweight 62 are both provided with a plurality of guide wheels 65 on the side facing the support column 2. The first counterweight 61, the second counterweight 62 and the load bearing frame 3 are arranged in a space-saving manner. At least one guide wheel 65 is arranged on each side of each pressing plate 24, so that the first counterweight 61 or the second counterweight 62 moves up and down along the corresponding two pressing plates 24, which can prevent the first counterweight 61 and the second counterweight 62 from shaking and run more smoothly.

[0040] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A truss, characterized in that The utility model provides a kind of lifting device, including four support columns (2), load-bearing frame (3) slidingly arranged between four described support columns (2), connecting frame (4) arranged on the upper end of four described support columns (2) and lifting drive module (5);The support column (2) includes steel column (21) and guide bar (22);The guide bar (22) is fixedly arranged on the side of the steel column (21) facing the side of adjacent steel column (21), the length direction of the guide bar (22) is vertically arranged, and the width of the guide bar (22) is less than the width of the steel column (21);The load-bearing frame (3) includes main frame body (31), four mounting seats (32) and at least four groups of compression wheel units (33);The main frame body (31) is squarely arranged, and each of the four corners of the main frame body (31) is provided with one mounting seat (32) and at least one group of compression wheel units (33), one side of the mounting seat (32) is fixedly connected with the main frame body (31), the other side of the mounting seat (32) is provided with the compression wheel unit (33), the compression wheel unit (33) is clamped and connected with the guide bar (22) and is slidingly connected with the guide bar (22);The lifting drive module (5) is connected with the main frame body (31) to drive the main frame body (31) to move up and down.

2. The truss of claim 1, wherein, The compression wheel unit (33) includes sliding wheel (331), bearing seat (332) and at least two compression wheels (333);The bearing seat (332) is fixed on the mounting seat (32), the sliding wheel (331) is rotatably connected to the bearing seat (332), and the circumferential side of the sliding wheel (331) is abuttingly connected with the side of the guide bar (22) away from the steel column (21);Both sides of the guide bar (22) are provided with at least one compression wheel (333), the compression wheel (333) is rotatably connected to the mounting seat (32) through a connecting shaft (334), the circumferential side of the compression wheel (333) is abuttingly connected with the corresponding side surface of the guide bar (22), and the guide bar (22) is located in the area enclosed by the sliding wheel (331) and the plurality of compression wheels (333).

3. The truss of claim 2, wherein, The main frame body (31) is provided with an installation column (34) protruding at the position corresponding to the mounting seat (32);The mounting seat (32) includes a first mounting plate (321), two limiting strips (322) and a second mounting plate (323);One side of the first mounting plate (321) is fixedly connected with the installation column (34), and both sides of the first mounting plate (321) parallel to the length direction of the installation column (34) are connected with one limiting strip (322); Both the limiting strips (322) and the first mounting plate (321) are screw-connected to the second mounting plate (323);The second mounting plate (323) is provided with a first mounting groove for mounting the bearing seat (332) and at least two second mounting grooves for mounting the connecting shaft (334) on the side away from the first mounting plate (321).

4. The truss of claim 3, wherein, The second installation groove is larger than the diameter of the connecting shaft (334); the mounting seat (32) further comprises an adjusting plate (324) fixed to the main frame body (31) and located on one side of the second installation plate (323); the adjusting plate (324) is provided with at least one first adjusting hole (325) penetrating therethrough; the adjusting plate (324) and the second installation plate (323) are abutted at the end of the second installation plate (323) through the first bolt penetrating through the first adjusting hole (325), so that the circumferential side of the pressing wheel (333) close to the adjusting plate (324) is abutted on the guide bar (22); the other side of the second installation plate (323) is provided with a second adjusting hole (326) communicating with the adjacent second installation groove, and the end of the second bolt penetrating through the second adjusting hole (326) is located in the corresponding second installation groove, and the end of the second bolt is abutted on the corresponding connecting shaft (334), so that the corresponding pressing wheel (333) is abutted on the corresponding guide bar (22).

5. The truss of claim 2, wherein, In the same group of the pressing wheel units (33), the pressing wheels (333) and the sliding wheels (331) are arranged in a staggered manner along the height direction.

6. The truss of claim 1, wherein, A group of the pressing wheel units (33) are arranged on the upper and lower sides of the mounting seat (32).

7. The truss of claim 1, wherein, The support column (2) further comprises two limiting blocks (23), one of which is arranged at the two ends of the guide bar (22), and the two limiting blocks (23) are fixed to the steel column (21), and the two limiting blocks (23) are provided with U-shaped limiting grooves, and the ends of the two ends of the guide bar (22) are clamped in the corresponding limiting grooves.

8. The truss of claim 1, wherein, The truss further comprises a counterweight module (6), the counterweight module (6) comprising a first counterweight block (61), a second counterweight block (62), a plurality of traction ropes (63) and a plurality of roller skate units (64); the first counterweight block (61) is arranged between the two adjacent support columns (2) in the width direction of the load-bearing frame (3); the second counterweight block (62) is arranged between the other two support columns (2); a plurality of roller skate units (64) are arranged on the side of the connecting frame (4) away from the load-bearing frame (3) along the arrangement path of the plurality of traction ropes (63); the first counterweight block (61) and the second counterweight block (62) are each provided with at least one traction rope (63); one end of the traction rope (63) is fixedly connected with the corresponding first counterweight block (61) or second counterweight block (62), and the other end of the traction rope (63) is sequentially wound on the corresponding plurality of roller skate units (64) and penetrates through the connecting frame (4) and is fixedly connected to the main frame body (31).

9. The truss of claim 8, wherein, The support column (2) further comprises pressing plates (24) arranged on the steel column (21) and located on one side of the guide bar (22), and each of the first counterweight (61) and the second counterweight (62) is provided with a plurality of guide wheels (65) facing one side of the support column (2), and at least one guide wheel (65) is arranged on each side of each pressing plate (24) to enable the first counterweight (61) or the second counterweight (62) to move up and down along the corresponding two pressing plates (24).

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