Car frame car bottom wheel mechanism of goods elevator without machine room

Abstract

The utility model discloses a car frame bottom wheel mechanism of a goods elevator without a machine room, which comprises a car frame consisting of an upper beam component, a lower beam component and a vertical beam component, and is characterized in that the lower beam component comprises a pair of channel steels arranged in parallel, and two ends of the two channel steels are respectively connected with the vertical beam component; the bottom faces of the two ends of the two steel channels are provided with car bottom wheel assemblies through wheel shafts respectively. And a degree-of-freedom auxiliary supporting body of the wheel shaft is arranged at the wheel shaft part. The phenomenon that people or objects in the lift car are injured due to overturning or falling of the traction machine without the machine room is avoided; an auxiliary lower beam is omitted, so that the goods elevator is the same as a conventional two-rail elevator, the advantages of the main vertical beam and the auxiliary vertical beam are fully played, the structure is reasonable, the best use of materials is achieved, the occupied space of the bottom is reduced, the car bottom structure is simplified, the self weight of the elevator running part is reduced, and the safety, reliability and durability of the goods elevator are comprehensively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technology of lifting elevators, in particular to a car frame and car bottom wheel mechanism of a machine room-less freight elevator. Background Art

[0002] In recent years, along with economic development, chemical plants, machinery plants and other related construction facilities have increased day by day. Due to the obvious good characteristics of machine room-less freight elevators, their use effect and user experience are more outstanding, so the demand for machine room-less freight elevators is also increasing.

[0003] The traditional car top wheel structure is the same as that of general freight elevators, both of which adopt the upper beam car top wheel structure, and the main engine is directly above the car. These structures have elevator safety hazards and poor user experience. Although the structure of the machine room-less freight elevator in the public technology is somewhat different, the design of various auxiliary lower beams at the bottom of the car frame makes the running part structure complex, occupies a large space, is heavy, wastes a lot, and does not bring space convenience for maintenance. For example, a machine room-less freight elevator car bottom wheel device with patent announcement number CN211687853U has bottom plates on both sides of the bottom of the elevator, a fixed bracket is arranged between the first beam and the second beam, a car bottom wheel is arranged on one side of the first beam, the car bottom wheel is fixed on the fixed bracket, a rope groove is arranged on the car bottom wheel, a rope blocking rod is arranged on the side and bottom of the car bottom wheel, a steel wire rope is installed in the rope groove, a protective plate is installed at the bottom of the elevator car frame, and a shock-absorbing pad is arranged between the bottom of the elevator car frame and the fixed bracket. The shock-absorbing pad includes an upper plate, a bottom plate and a buffer mechanism, and the upper plate, the buffer mechanism and the bottom plate are connected. Another example is the patent publication number CN218344919U, which discloses a car-type elevator car bottom wheel assembly, including a secondary lower beam assembly, a rope pulley assembly arranged on the secondary lower beam assembly, and a shaft limiting plate arranged on the secondary lower beam assembly for limiting the wheel axle of the rope pulley assembly, the secondary lower beam assembly including a wheel axle and a groove wheel rotatably connected to the wheel axle, the secondary lower beam assembly is provided with a space for accommodating the groove wheel, the end of the secondary lower beam assembly is provided with a mounting notch for accommodating both ends of the wheel axle, the secondary lower beam assembly is detachably connected with a mounting plate for preventing the wheel axle from opening toward the mounting notch, a limiting groove is provided on the circumferential surface of at least one end of the wheel axle, the secondary lower beam assembly is detachably mechanically connected with the shaft limiting plate, and the shaft limiting plate extends into the limiting groove to limit the rotation and axial movement of the wheel axle. Summary of the invention

[0004] The purpose of the utility model is to solve the above-mentioned problems and to provide a car frame and car bottom wheel mechanism for a machine roomless freight elevator. The car frame and car bottom wheel mechanism are arranged by using the lower beam assembly of the car frame itself. On the basis of ensuring safety, reliability and durability, the auxiliary lower beam is cancelled to make it the same as a conventional two-track elevator, giving full play to the advantages of the main and auxiliary vertical beams, reducing the bottom space occupancy, reducing the deadweight and making full use of the materials.

[0005] The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a car frame and car bottom wheel mechanism of a machine roomless freight elevator, including a car frame composed of an upper beam assembly, a lower beam assembly and a vertical beam assembly, wherein the lower beam assembly includes a pair of parallel arranged channel steels, the two ends of the two channel steels are respectively connected to the vertical beam assemblies, and the car bottom wheel assemblies are respectively arranged on the bottom surfaces of the two ends of the two channel steels through wheel axles; and an auxiliary support body for the freedom of the wheel axle is provided at the wheel axle position.

[0006] In the aforementioned car frame and car bottom wheel mechanism of a machine roomless freight elevator, preferably, the wheel axle is horizontal and vertical to two parallel channel steels, and rope pulleys are respectively installed at both ends of the wheel axle, and the rope pulleys are located on the outside of the channel steels.

[0007] In the aforementioned car frame and car bottom wheel mechanism of a machine roomless freight elevator, preferably, diagonal tie rods are symmetrically arranged on both sides of the lower beam assembly with the vertical beam assembly as the center, the upper end of the diagonal tie rod is fixed to the upper end of the vertical beam assembly, and the lower end of the diagonal tie rod is fixed to the car bottom plate frame laid above the lower beam assembly.

[0008] In the aforementioned car frame and car bottom wheel mechanism of a machine room-less freight elevator, preferably, the auxiliary degree of freedom support body includes a wheel axle radial restriction body and an axial restriction body.

[0009] In the aforementioned car frame and car bottom wheel mechanism of a machine room-less freight elevator, preferably, the wheel axle radial limiting body is arranged on the side of the wheel axle close to the guide rail in the direction of the shaft wall, or on both sides of the wheel axle.

[0010] In the aforementioned car frame and car bottom wheel mechanism of a machine room-less freight elevator, preferably, a rope retaining frame is installed at the rope sheave portion of the car bottom wheel assembly via a bracket, and the bracket is fixed to the end of the wheel axle.

[0011] In the aforementioned car frame and car bottom wheel mechanism of a machine room-less freight elevator, preferably, the freedom auxiliary support body includes a support frame, and a guide shoe and a safety clamp are installed through the support frame.

[0012] In the aforementioned car frame and car bottom wheel mechanism of a machine room-less freight elevator, preferably, an alarm light is also provided on the bottom surface of the channel steel of the lower beam assembly.

[0013] This technical solution is designed from the following aspects:

[0014] First, the car frame is taken as the main body, and the base beam of the lower beam assembly is determined according to the actual elevator transportation volume. The base beam of the lower beam assembly of this device is composed of a pair of parallel arranged channel steels, forming a double-jointed channel steel frame structure. As long as the channel steels are properly connected, the best load-bearing capacity and sufficient horizontal installation surface can be obtained. Moreover, the two ends of the channel steel are directly connected to the vertical beam assembly. Since the vertical beam is also a combination of channel steels, the cooperation between the two can be completely screwed on site, without welding them into one body to bring inconvenience to transportation.

[0015] Second, the setting of the car bottom wheel assembly: the car bottom wheel assembly is completely attached to the bottom surface of the channel steel. Because the two channels have sufficient horizontal installation surfaces, the wheel shaft support surface is large, the rope pulley can be close to the outer side of the channel steel, and the rope pulley working torque is easily guaranteed. After the shaft clamp is fixed, it has high stability and strong load-bearing capacity, and the number of parts is small, and no additional space is occupied. And the use of shaft clamps to fix the wheel shaft is all screwed, which has positive significance for on-site installation and daily maintenance.

[0016] The third is the design and use of the auxiliary support for the freedom of the wheel axle. Due to the high frequency of use and long operation time of the elevator, this device uses guide shoes, safety clamps and other mounting frames to limit the freedom of the wheel axle. This limitation is set according to the force conditions of the wheel axle and is mainly arranged on the side of the wheel axle close to the guide rail in the direction of the shaft wall. One thing has multiple uses, reducing redundancy and reducing equipment weight.

[0017] In other aspects, this solution can be widely used in low-tonnage vertical freight elevators. Configuring diagonal rods with the vertical beam assembly as the center can fully meet the needs of conventional cargo transportation. Reasonable configuration of auxiliary parts such as buffers, rope stops, buffer plates, etc. can fully ensure the safety, reliability and durability of the freight elevator.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: the top wheel of the car is replaced by the bottom wheel of the car, so that the traction machine can be arranged between the car and the counterweight instead of directly above the car, thereby avoiding the phenomenon of overturning or falling of the traction machine without a machine room causing damage to people or objects in the car; the auxiliary lower beam is cancelled to make it the same as a conventional two-track elevator, and the advantages of the main and auxiliary vertical beams are fully utilized. The structure is reasonable and the materials are fully utilized, the space occupied at the bottom is reduced, the structure of the car bottom is simplified, the weight of the running part of the elevator is reduced, and the safety, reliability and durability of the freight elevator are fully guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a main view structural diagram of an application state of the utility model.

[0020] Figure 2 yes Figure 1 Left view of .

[0021] Figure 3 yes Figure 1 AA view.

[0022] Figure 4 The utility model is a schematic diagram of the structure of a lower beam component.

[0023] Figure 5 yes Figure 1 A schematic diagram of the partially enlarged structure of the left end of the middle and lower beam assembly.

[0024] Figure 6 yes Figure 4 Left view of .

[0025] Figure 7 yes Figure 4 Top view of the .

[0026] Figure 8 yes Figure 4 Bottom view of .

[0027] Fig. 9 yes Figure 8 BB direction view.

[0028] Fig.10 The utility model is a structural schematic diagram of a well installation state.

[0029] In the figure: 1-upper beam assembly, 2-upper beam assembly, 3-lower beam assembly, 301-channel steel, 302-buffer plate, 303-ropes, 304-shaft hoop, 305-bracket, 306-rope stop frame, 307-axle, 308-freedom auxiliary support, 4-inclined rod, 5-bracing assembly, 6-car frame fastener, 7-alarm lamp, 8-guide rail, 9-traction machine, 10-car, 11-guide shoe. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0031] The "assembly" mentioned in this embodiment is used in accordance with the conventional technical terminology in this field, which includes various auxiliary parts that are conventionally fixed, connected or reserved on the main body, such as the upper beam assembly is a combination of channel steel beams, connecting plates, reinforcing ribs, spare holes, bolts and nuts.

[0032] The present embodiment is a car frame and car bottom wheel mechanism of a machine room-less freight elevator, and the overall structure of the elevator running part is as follows Figures 1 to 3 As shown, the car frame is composed of an upper beam assembly 1, a lower beam assembly 3 and a vertical beam assembly 2. The upper beam assembly 1 is provided with a safety clamp linkage mechanism, and the lower end of the pull rod assembly of the safety clamp linkage mechanism extends to the lower beam assembly 3. The vertical beam assembly 2 is formed by double channel steels being assembled back to back on one side, and a car frame fastener 6 is provided on the top of the vertical beam assembly 2. The lower beam assembly 3 includes a pair of parallel arranged channel steels 301, which can be seen in FIG. Figure 7 , the two ends of the two channel steels 301 are connected to the vertical beam assembly respectively, that is, the distance between the two channel steels 301 is equal to the width of the channel steel in the vertical beam assembly 2. The vertical beam assembly 2 and the lower beam assembly 3 are both connected by bolts.

[0033] With the vertical beam assembly 2 as the center, diagonal tie rods 4 are symmetrically arranged on both sides of the lower beam assembly 3. The upper ends of the diagonal tie rods 4 are fixed to the upper ends of the vertical beam assembly 2, and the lower ends of the diagonal tie rods 4 are fixed to the car floor frame laid on the lower beam assembly 3. The car 10 is set in the car frame on the car floor frame. A buffer plate 302 is provided at the midpoint of the two channel steels 301 of the lower beam assembly 3, such as Figure 8 shown.

[0034] See also Figure 4 , Figure 5 , the bottom surfaces of the two channel steels 301 of the lower beam assembly 3 are respectively provided with a car bottom wheel assembly through a wheel axle 307. Specifically, the wheel axle 307 is installed horizontally and vertically to the two parallel channel steels 301, and is fixed by an axle hoop 304. The two ends of the wheel axle 307 are respectively provided with a rope pulley 303, and the rope pulley 303 is located on the outside of the channel steel 301. Further, the rope pulley 303 of the car bottom wheel assembly is provided with a rope retaining frame 306 through a bracket 305, such as Figure 6 As shown, the bracket 305 is directly fixed to the end of the axle 307.

[0035] An alarm light 7 is provided on the bottom surface of the channel steel 301 of the lower beam assembly 3 through a lamp holder. The alarm light 7 is located between two channel steels 301. Fig. 9 shown.

[0036] Further, a free-degree-of-freedom auxiliary support body 308 of the axle 307 is provided at the axle 307 position. Figure 5 The degree of freedom auxiliary support body 308 includes a radial limiter and an axial limiter of the axle 307. The axial degree of freedom of the axle 307 is limited by conventional technical means such as a shoulder, a bearing stop, and an end cover. The radial limiter is arranged on the side of the axle 307 near the guide rail 8 in the direction of the shaft wall, or on both sides of the axle 307.

[0037] Furthermore, the auxiliary support body 308 of the degree of freedom of the axle 307 includes a support frame made of channel steel. When serving as an auxiliary limit for the axle 307, a notch is removed from the channel steel, and the notch matches the shape of the shaft hoop 304, just clamping the shaft hoop 304, thereby obtaining the limit on both sides of the axle 307. For one side, it is sufficient to make the support frame close to the shaft hoop 304.

[0038] At the same time, the lower end of the support frame of the auxiliary support body 308 of the wheel shaft 307 is just used to install the guide shoe 11 and the safety clamp.

[0039] The structure of the hoistway installation status is as follows Fig.10As shown, due to the arrangement of the lower beam assembly 3 and the car bottom wheel assembly, the traction machine 9 (main machine) is installed between the car and the counterweight at the top of the hoistway, the counterweight counter rope pulley is installed on the hoistway guide rail 8, one end of the wire rope is fixed to the rope head assembly at the top of the hoistway wall, goes downward around the rope pulley 303 group of the car bottom wheel assembly, then goes upward to the traction machine 9, and then reversely connects vertically to the counterweight position.

[0040] The above embodiments are illustrations of the present invention, not limitations of the present invention. Without departing from the principles of the present technical solution, any equivalent changes or equivalent modifications made in accordance with the technical ideas proposed by the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A car frame and bottom wheel mechanism for a machine room-less freight elevator, comprising a car frame consisting of an upper beam assembly (1), a lower beam assembly (3) and a vertical beam assembly (2), wherein the car frame is characterized by: The lower beam assembly comprises a pair of parallel arranged channel steels (301), the two ends of the two channel steels are respectively connected to the vertical beam assembly, and the bottom surfaces of the two ends of the two channel steels are respectively provided with car bottom wheel assemblies through axles (307); and the axle freedom auxiliary support body (308) is provided at the axle position.

2. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, characterized in that: The wheel axle (307) is horizontal and vertical to two parallel channel steels (301), and rope wheels (303) are respectively installed at both ends of the wheel axle, and the rope wheels are located outside the channel steels.

3. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, characterized in that: With the vertical beam assembly (2) as the center, diagonal tie rods (4) are symmetrically arranged on both sides of the lower beam assembly (3); the upper end of the diagonal tie rod is fixed to the upper end of the vertical beam assembly, and the lower end of the diagonal tie rod is fixed to the car floor frame laid above the lower beam assembly.

4. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, characterized in that: The degree of freedom auxiliary support body (308) includes a radial limiting body and an axial limiting body of the wheel axle (307).

5. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 4, characterized in that: The radial limiting body of the wheel axle (307) is arranged on the side of the wheel axle close to the guide rail (8) in the direction of the shaft wall, or on both sides of the wheel axle.

6. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, characterized in that: A rope retaining frame (306) is installed at the rope pulley portion of the car bottom wheel assembly via a bracket (305), and the bracket is fixed to the end of the wheel shaft (307).

7. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, 4 or 5, characterized in that: The degree of freedom auxiliary support body (308) comprises a support frame, on which a guide shoe (11) and a safety clamp are mounted.

8. The car frame and car bottom wheel mechanism of a machine room-less freight elevator according to claim 1, characterized in that: An alarm light (7) is also provided on the bottom surface of the channel steel (301) of the lower beam assembly (3).

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