Double-guide-rail freight elevator car frame

Abstract

The utility model discloses a double-guide-rail freight elevator car frame which comprises an upper beam assembly (1) and a lower beam assembly (2), a pair of vertical beam assemblies (3) are arranged between the upper beam assembly (1) and the lower beam assembly (2), a car bottom (4) is arranged on the lower beam assembly (2), and each vertical beam assembly (3) is provided with a transverse pull rod (31). At least four diagonal draw bars (32) which are symmetrically distributed by taking the vertical beam assembly (3) as a symmetry axis are arranged on the transverse draw bar (31), the diagonal draw bars (32) adopt section bars or steel plate bending pieces, and the other ends of the diagonal draw bars (32) are connected with the car bottom (4); the two ends of the upper beam assembly (1) and the two ends of the lower beam assembly (2) are each provided with a pair of first guide shoes (51) and a pair of second guide shoes (52) which correspond to the vertical beam assemblies (3) and are distributed up and down. The utility model has the characteristics of simple and compact structure, low cost, light dead weight and good stability.

Description

Technical Field

[0001] This utility model relates to a car frame, and more particularly to a double-guide rail freight elevator car frame. Background Technology

[0002] Large, heavy-duty freight elevators are widely used in factories, hotels, shopping malls, and other places that need to transport goods due to their large load capacity. The elevator's guiding system restricts the freedom of movement of the car and counterweight, allowing them to move only up and down along the guide rails. The guiding system consists of guide rails, guide shoes, and guide rail supports. The guide rails determine the relative position of the car and counterweight within the hoistway and guide their movement. For large-tonnage, high-load freight elevators, due to the large car depth, the existing two-guide-rail operating mode is not stable enough, prone to swaying or even tilting, which not only fails to meet normal operating requirements but also poses significant safety hazards. Therefore, a six-guide-rail car frame is generally used to meet these requirements.

[0003] Existing six-rail car frames, such as the six-rail freight elevator car frame structure disclosed in Chinese Patent Publication No. CN105947843A, include two parallel secondary beam frames, a side beam between the two secondary beam frames, a main beam frame in the middle of the side beam, a main straight beam connecting plate on the upper part of the main beam frame, car tie rods on both sides of the main straight beam connecting plate, and the other end of the car tie rods connected to the side beam; secondary guide shoes are provided at the upper and lower ends of the secondary beam frames, safety clamps are provided at the upper and lower ends of the main beam frame, the safety clamps are connected to the main guide shoes, and a car top wheel is also provided at the middle of the upper end of the main beam frame; a secondary straight beam clamping plate is provided on the secondary beam frame, and a main straight beam clamping plate is provided on the main beam frame.

[0004] While the aforementioned six-rail car frame offers good load-bearing capacity and effectively prevents swaying during operation, thus meeting the requirements for large-tonnage freight elevators, its complex structure leads to longer construction periods and higher costs. Furthermore, the overly complex structure also results in excessive weight, making installation and maintenance more difficult and complicated. Utility Model Content

[0005] The purpose of this invention is to provide a double-guide-rail freight elevator car frame. This invention features a simple and compact structure, reduced cost, light weight, and good stability.

[0006] The technical solution of this utility model is as follows: A double-guide rail freight elevator car frame includes an upper beam assembly and a lower beam assembly. A pair of vertical beam assemblies are provided between the upper beam assembly and the lower beam assembly. A car bottom is provided on the lower beam assembly. Each vertical beam assembly is provided with a transverse tie rod. At least four diagonal tie rods are symmetrically distributed about the vertical beam assembly as the axis of symmetry on the transverse tie rod. The diagonal tie rods are made of profiles or bent steel plates. The other end of the diagonal tie rod is connected to the car bottom. Both ends of the upper beam assembly and the lower beam assembly are provided with a pair of first guide shoes and second guide shoes that correspond to the vertical beam assemblies and are distributed vertically.

[0007] The aforementioned double-guide-rail cargo elevator car frame, wherein the car bottom is of an integral structure, and the end of the car bottom is provided with a car sill plate.

[0008] The aforementioned double-guide-rail cargo elevator car frame, wherein the upper beam assembly is provided with a counter pulley.

[0009] The aforementioned double-guide-rail cargo elevator car frame, wherein the connection between the upper beam assembly and the vertical beam assembly is provided with a reinforcing member, one side of the reinforcing member is connected with the upper beam assembly, and the other side of the reinforcing member is connected with the vertical beam assembly.

[0010] The aforementioned double-guide-rail cargo elevator car frame, wherein both ends of the upper beam assembly and the lower beam assembly are provided with a guide shoe plate, the guide shoe plate is provided with a U-shaped guide shoe seat, a first guide shoe is installed on the guide shoe plate, and a second guide shoe is installed on the guide shoe seat.

[0011] Compared with the prior art, the double-guide-rail cargo elevator car frame has the following beneficial effects:

[0012] The upper beam assembly, the lower beam assembly, and the pair of vertical beam assemblies are adopted to form the car frame suitable for heavy load, the structure is more compact, the requirement for the shaft and the component arrangement space is lower, the car frame weight is greatly reduced, the material cost and the installation and maintenance cost are saved, the installation time is reduced, and the convenient conditions are provided for the later maintenance and maintenance work.

[0013] Moreover, each group of four inclined pull rods is connected with the vertical beam assembly through the transverse pull rod, the strength of the vertical beam assembly is improved, the car frame is more stable, the inclined pull rod is made of a profile or a steel plate bending piece, when the car is loaded or is in an unbalanced state, the downward tension of the car can be borne, and the upward tilting pressure of the car can also be borne, the strength and stability of the car frame are further improved.

[0014] Eight guide shoes are arranged on the upper beam assembly and the lower beam assembly, the support points of the car frame on the guide rail are increased, the contact area and the guiding force of the guide shoe and the guide rail are ensured, the pressure transmitted from the car to the guide rail is effectively reduced, the bending deformation of the guide rail is prevented, the car can stably run when running, and the car can keep a horizontal state when the car is loaded or is in an unbalanced state, the swing and the inclination are avoided, the overall strength of the car frame when the car is in a front and rear unbalanced state is improved, the safety coefficient is high, and the car frame is suitable for the operation of a heavy load car.

[0015] Therefore, the double-guide-rail cargo elevator car frame has the characteristics of compact structure, reduced cost, light self weight, and good stability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the double-guide-rail cargo elevator car frame.

[0017] Figure 2 is Figure 1 a structural schematic view of one side.

[0018] Figure 3 is Figure 1 a structural schematic view of another side.

[0019] The signs in the drawings are: 1, upper beam assembly; 11, counter pulley; 12, reinforcing member; 2, lower beam assembly; 3, vertical beam assembly; 31, transverse pull rod; 32, inclined pull rod; 33, connecting seat; 4, car bottom; 41, car sill top plate; 51, first guide shoe; 52, second guide shoe; 53, guide shoe plate; 54, guide shoe seat. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and examples, but it is not as the basis for limiting the utility model.

[0021] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] Example:

[0023] As Figures 1-3 shown, a double guide rail cargo elevator car frame, including upper beam assembly 1 and lower beam assembly 2, a pair of vertical beam assembly 3 is arranged between upper beam assembly 1 and lower beam assembly 2, and car bottom 4 is arranged on lower beam assembly 2, transverse pull rod 31 is arranged on each vertical beam assembly 3, at least four inclined pull rods 32 are symmetrically distributed with vertical beam assembly 3 as the symmetry axis, in the embodiment, a total of 8 inclined pull rods 32 are used, the inclined pull rod 32 uses profile or steel plate bending piece, the other end of the inclined pull rod 32 is connected with the car bottom 4 through the connecting seat 33; a pair of first guide shoes 51 and second guide shoes 52 corresponding to the vertical beam assembly 3 and distributed upwards and downwards are arranged at both ends of the upper beam assembly 1 and the lower beam assembly 2.

[0024] The utility model discloses a pair of vertical beam assemblies 3 form a pair of mouth-shaped gantry structure's car frame, relative to the prior art's 6 guide rail car frame of large -scale elevator, has reduced 2 sets of vice beam frame, adopts two guide rail's mode, and the structure is more compact, and the space requirement of shaft and part arrangement is lower, greatly reduces car frame weight, saves material cost and installation maintenance cost, reduces the installation time, provides the convenient condition for the later maintenance and maintenance work,

[0025] And adopt every group four inclined pull rod 32 with vertical beam assembly 3 through transverse pull rod 31 connection, transverse pull rod 31 cooperation inclined pull rod 32 and vertical beam assembly 3, will stress dispersion, form frame structure, make car frame structure more stable, inclined pull rod 32 adopts section bar or steel plate bending piece, for example angle steel, distinguish from traditional cylindrical or strip inclined pull rod 32, rigidity is bigger, when loading or partial load of car, can bear the tension of car downward, can bear the pressure of car upward, with car frame formed triangular stable relationship, further improved the strength and stability of car frame,

[0026] Be provided with 2 first guide shoes 51 and 2 second guide shoes 52 on upper beam assembly 1 and lower beam assembly 2, a total of 8 guide shoes, increase the support point of car frame on guide rail, both ensure the contact area of guide shoe and guide rail and guiding force, can effectively reduce the pressure of car transmission to guide rail, prevent guide rail bending deformation, ensure that car can run smoothly when running and can keep horizontal state when car loading or when car appears partial load phenomenon, avoid swing and tilt, improve the overall strength of car frame when front and rear partial load, high safety factor, suitable for the operation of heavy load large car.

[0027] The car bottom 4 is of an integral structure, and the end of the car bottom 4 is welded with a car sill baffle plate 41, so that the car sill is convenient to install, and the overall structural strength and stability of the car frame are ensured.

[0028] The upper beam assembly 1 is provided with a counter pulley 11. The traction steel wire rope is hung on the counter pulley 11, so that the car can run up and down in the shaft.

[0029] The connection between the upper beam assembly 1 and the vertical beam assembly 3 is provided with a reinforcing piece 12, one side of the reinforcing piece 12 is connected with the upper beam assembly 1, and the other side of the reinforcing piece 12 is connected with the vertical beam assembly 3. The reinforcing piece 12 is arranged to prevent the car frame from being twisted and to enhance the stability of the car frame.

[0030] Both ends of the upper beam assembly 1 and the lower beam assembly 2 are provided with guide shoe plates 53, the guide shoe plates 53 are provided with U-shaped guide shoe seats 54, the first guide shoes 51 are installed on the guide shoe plates 53, and the second guide shoes 52 are installed on the guide shoe seats 54. The first guide shoes 51 and the second guide shoes 52 do not interfere with each other, and are convenient to install and accurate in positioning.

[0031] The utility model discloses the part of not detailed is prior art, therefore does not elaborate here specifically.

Claims

1. A double-rail cargo elevator car frame comprising an upper beam assembly (1) and a lower beam assembly (2), between which a pair of vertical beam assemblies (3) are arranged, and a car bottom (4) is arranged on the lower beam assembly (2), characterized in that: Each vertical beam assembly (3) is provided with a transverse pull rod (31), the transverse pull rod (31) is provided with at least four inclined pull rods (32) symmetrically distributed with the vertical beam assembly (3) as the symmetric axis, the inclined pull rod (32) is a profile or a steel plate bent piece, the other end of the inclined pull rod (32) is connected with the car bottom (4); the two ends of the upper beam assembly (1) and the lower beam assembly (2) are each provided with a pair of corresponding first guide shoes (51) and second guide shoes (52) of the vertical beam assembly (3) and distributed upward and downward.

2. A dual guide rail cargo elevator car frame according to claim 1, characterized in that: The car bottom (4) is a one-piece structure, and the end of the car bottom (4) is provided with a car sill toe plate (41).

3. A dual guide rail cargo elevator car frame according to claim 1, wherein: The upper beam assembly (1) is provided with a counter pulley (11).

4. A dual guide rail cargo elevator car frame according to claim 1, wherein: The connection part of the upper beam assembly (1) and the vertical beam assembly (3) is provided with a reinforcing piece (12), one side of the reinforcing piece (12) is connected with the upper beam assembly (1), and the other side of the reinforcing piece (12) is connected with the vertical beam assembly (3).

5. A dual guide rail cargo elevator car frame according to claim 1, wherein: The two ends of the upper beam assembly (1) and the lower beam assembly (2) are each provided with a guide shoe plate (53), the guide shoe plate (53) is provided with a U-shaped guide shoe seat (54), the first guide shoe (51) is installed on the guide shoe plate (53), and the second guide shoe (52) is installed on the guide shoe seat (54).

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