Backpack frame type lift car frame mechanism

Abstract

A backpack frame type lift car frame mechanism comprises a lift car bottom plate and two stand columns, the bottom of the side face of each stand column is welded to one right-angle side of a right-angle connecting plate, and the other right-angle side of the right-angle connecting plate is connected with the side edge of the lift car bottom plate; a buffer cross beam, a rope head cross beam and an upper guide shoe cross beam are vertically installed between the two stand columns from bottom to top, the buffer cross beam is located at the bottoms of the stand columns, the rope head cross beam is located at the position close to the lower portions of the stand columns, and the upper guide shoe cross beam is installed at the upper ends of the stand columns. According to the utility model, the defects in the prior art are overcome, and bending moment and shear stress caused by load can be borne through the right-angle connecting plate. And the load of the stand column can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to elevator equipment, and specifically to a backpack rack type car frame mechanism. Background Art

[0002] Backpack rack type elevators are widely used because of their high utilization rate of hoistway area and small required civil engineering dimensions. Its structure is different from that of ordinary gantry structures. Its car frame is an L-shaped backpack structure. The car bottom is connected to the backpack rack to form a cantilever beam structure. Roller guides are installed at the upper and lower ends of the backpack rack columns.

[0003] In the prior art, when a backpack rack type elevator is installed and used, its car frame uses a car support to fix the car bottom to support the weight of the entire elevator. When supporting, the lower side of the entire car frame is stressed. Therefore, due to the particularity of the force on the existing backpack rack and car bottom structures, the bending moment and shear stress loads on the columns are too large. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a backpack rack type car frame mechanism, which overcomes the deficiencies of the prior art and can withstand the bending moment and shear stress caused by the load through a right-angle connecting plate. And it can greatly reduce the load on the columns.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] A backpack rack type car frame mechanism includes a car bottom plate and two columns. The bottom of the side of each column is welded to a right-angle side of a right-angle connecting plate, and the other right-angle side of the right-angle connecting plate is connected to the side of the car bottom plate; between the two columns, a buffer beam, a rope head beam, and an upper guide beam are installed in parallel at intervals from bottom to top. The buffer beam is located at the bottom of the column, the rope head beam is located above the buffer beam and close to the lower part of the column, and the upper guide beam is installed at the upper end of the column.

[0007] Preferably, the buffer beam includes a first channel steel plate with both ends bent, and a first steel plate is fixedly welded in the groove of the first channel steel plate. The first steel plate is of a concave plate structure with wide ends and a concave middle.

[0008] Preferably, first reinforcing rib plates are fixedly welded at positions close to both ends on the lower surface of the first steel plate.

[0009] Preferably, the rope head beam includes a second channel steel plate with both ends bent, and a second steel plate is fixedly welded in the groove of the second channel steel plate.

[0010] Preferably, there are multiple second reinforcing rib plates at the middle position on the lower surface of the second steel plate.

[0011] Preferably, the upper guide shoe crossbeam includes a third channel steel plate with bent ends, and third steel plates are fixedly welded above and below the groove of the third channel steel plate.

[0012] Preferably, four bottom supports are installed under the car floor by bolts.

[0013] The utility model provides a backpack rack type car frame mechanism, which has the following beneficial effects: by welding a right-angle connecting plate at the lower end of each of the two columns, the two columns can be directly connected to the car floor through the right-angle connecting plate, so that the two columns and the car floor form a double right-angle shape, and the right-angle connecting plate can bear the bending moment and shear stress caused by the load. By arranging the rope head crossbeam at the lower part of the column, the tensile stress borne by the column is limited to the lower part of the column. In addition, the car floor adopts a flat bottom type and is fixed at the lower end of the two columns near the lower guide shoe position, so the bending moment caused by the self-weight and load of the car can be jointly borne by the column and the guide shoe, greatly reducing the load of the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0015] Figure 1 Structural schematic diagram of the present utility model;

[0016] Figure 2 Top view of the present utility model;

[0017] Figure 3 Structural schematic diagram of the column in the present utility model;

[0018] Figure 4 Top view of the buffer crossbeam in the present utility model;

[0019] Figure 5 Side view of the buffer crossbeam in the present utility model;

[0020] Figure 6 Top view of the rope head crossbeam in the present utility model;

[0021] Figure 7 Side view of the rope head crossbeam in the present utility model;

[0022] Figure 8 Top view of the upper guide shoe crossbeam in the present utility model;

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Carriage floor; 2. Column; 3. Right-angle connecting plate; 4. Buffer crossbeam; 5. Socket crossbeam; 6. Upper guide shoe crossbeam; 41. First channel steel plate; 42. First steel plate; 43. First stiffening rib plate; 51. Second channel steel plate; 52. Second steel plate; 53. Second stiffening rib plate; 61. Third channel steel plate; 62. Third steel plate. Detailed implementation mode

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model.

[0026] Example 1, as Figures 1 to 8 shown, a backpack-type carriage frame mechanism includes a carriage floor 1 and two columns 2. The bottom side of each column 2 is welded to one right-angled side of a right-angle connecting plate 3, and the other right-angled side of the right-angle connecting plate 3 is connected to the side of the carriage floor 1; a buffer crossbeam 4, a socket crossbeam 5 and an upper guide shoe crossbeam 6 are installed between the two columns 2 in parallel at intervals from bottom to top. The buffer crossbeam 4 is located at the bottom of the column 2, the socket crossbeam 5 is located above the buffer crossbeam 4 and close to the lower part of the column 2, and the upper guide shoe crossbeam 6 is installed at the upper end of the column 2.

[0027] Working principle:

[0028] By welding a right-angle connecting plate 3 to the lower end of each of the two columns 2, the right-angle connecting plate 3 can be directly connected to the carriage floor 1. The two columns 2 and the carriage floor 1 are connected by double right-angle members, and the right-angle connecting plate 3 is used to bear the bending moment and shear stress caused by the load. In addition, the two columns 2 are connected to each other by a buffer crossbeam 4, a socket crossbeam 5 and an upper guide shoe crossbeam 6 to form three single-arm connections, so as to effectively meet the design requirements of the overall structure and meet the requirements of structural strength and stiffness.

[0029] By arranging the socket crossbeam 5 at the lower part of the column 2, the tensile stress borne by the column 2 is limited to the lower part of the column 2. In addition, in this embodiment, the carriage floor 1 is of a flat-bottom type and is fixed at the lower end of the two columns 2 near the lower guide shoe position. Therefore, the bending moment caused by the self-weight and load of the carriage can be jointly borne by the column 2 and the guide shoe, greatly reducing the load on the column 2. And it also reduces the height requirement for the pit.

[0030] In the present utility model, upper guide shoes, lower guide shoes and safety clamps are respectively installed on the outer sides of the two columns. In this embodiment, the safety clamp can specifically adopt an electronic safety clamp (when the elevator runs downward at an overspeed, the electronic trigger mechanism triggers the safety clamp to act, and the safety clamp linkage mechanical mechanism). Among them, the upper guide shoes, lower guide shoes and safety clamps all adopt well-known technical solutions in the prior art, and those skilled in the art have all understood them, so they will not be elaborated here.

[0031] Embodiment 2, as Figures 4 to 5 shown, as a further preferred solution of Embodiment 1, the buffer crossbeam 4 includes a first channel steel plate 41 formed by bending the two ends of a 6-mm-thick cold-rolled steel plate. A strip-shaped 8-mm-thick first steel plate 42 is fixedly welded inside the groove of the first channel steel plate 41. The two ends of the first steel plate 42 are 124 mm wide, and the middle part is 40 mm wide, presenting a concave plate structure with wide ends and a concave middle. In addition, first reinforcing rib plates 43 with a thickness of 6 mm are fixedly welded at positions near the two ends of the lower surface of the first steel plate 42. The first reinforcing rib plates 43 are made to approach the column 2 to bear the impact force load of the car buffers on both sides, so that most of the impact force of the car buffers on both sides is directly transmitted to the bottom of the column, effectively reducing the stress of the buffer crossbeam 4.

[0032] Embodiment 3, as Figures 6 to 7 shown, as a further preferred solution of Embodiment 1, the rope socket crossbeam 5 includes a second channel steel plate 51 formed by bending the two ends of a 6-mm-thick cold-rolled steel plate. A strip-shaped 8-mm-thick second steel plate 52 is fixedly welded inside the groove of the second channel steel plate 51. The shape of the second steel plate 52 is that the two ends are 124 mm wide, the width at the middle rope socket plate is 89 mm, and the rest is 40 mm wide, presenting a double-concave plate structure. In addition, there are three second reinforcing rib plates 53 with a thickness of 6 mm at the middle position of the lower surface of the second steel plate 52 to bear the tensile load of the rope socket assembly.

[0033] Embodiment 4, as Figure 8 shown, as a further preferred solution of Embodiment 1, the upper guide shoe crossbeam 6 includes a third channel steel plate 61 formed by bending the two ends of a 6-mm-thick cold-rolled steel plate. Above and below the groove of the third channel steel plate 61, a strip-shaped 5-mm-thick third steel plate 62 is fixedly welded. The shape of the third steel plate 62 is that the two ends are 124 mm wide, and the middle part is 40 mm wide, presenting a concave plate structure with wide ends and a concave middle.

[0034] Embodiment 5, as a further preferred solution of Embodiment 1, four bottom supports are installed below the car floor 1 by bolts to facilitate the installation of the car wall.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backpack-type car frame mechanism, characterized in that: The invention comprises a car bottom plate (1) and two columns (2), wherein the bottom of the side surface of each column (2) is welded to a right-angled side of a right-angled connecting plate (3), and the other right-angled side of the right-angled connecting plate (3) is connected to the side edge of the car bottom plate (1); a buffer beam (4), a rope head beam (5) and an upper guide shoe beam (6) are respectively installed in parallel and spaced relation from bottom to top between the two columns (2), wherein the buffer beam (4) is located at the bottom of the column (2), the rope head beam (5) is located above the buffer beam (4) and close to the bottom of the column (2), and the upper guide shoe beam (6) is installed at the upper end of the column (2).

2. A backpack-type car frame mechanism according to claim 1, characterized in that: The buffer cross beam (4) comprises a first groove steel plate (41) with bent ends, a first steel plate (42) is fixedly welded in the groove of the first groove steel plate (41), and the first steel plate (42) is a concave plate structure with wide ends and a concave middle.

3. A backpack-type car frame mechanism according to claim 2, characterized in that: A first reinforcing rib plate (43) is fixedly welded to a lower surface of the first steel plate (42) at positions close to both ends.

4. The backpack-type car frame mechanism according to claim 1, characterized in that: The rope head cross beam (5) comprises a second groove steel plate (51) with two ends bent, and a second steel plate (52) is fixedly welded in the groove of the second groove steel plate (51).

5. A backpack-type car frame mechanism according to claim 4, characterized in that: A plurality of second reinforcing rib plates (53) are provided in the middle of the lower surface of the second steel plate (52).

6. The backpack-type car frame mechanism according to claim 1, characterized in that: The upper guide shoe cross beam (6) comprises a third groove steel plate (61) with two ends bent, and a third steel plate (62) is fixedly welded to the upper and lower parts of the groove of the third groove steel plate (61).

7. The backpack-type car frame mechanism according to claim 1, characterized in that: Four bottom supports are installed below the car bottom plate (1) via bolts.

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