An elevator car

Abstract

This utility model relates to an elevator car frame, including two vertically arranged side beams, an upper beam fixedly connected between the upper ends of the side beams, a car bottom bracket fixedly connected between the lower ends of the side beams, and a sheave assembly fixedly connected to the lower end face of the car bottom bracket. The car bottom bracket includes a lower beam, which is fixedly connected between the lower ends of the side beams. Two support beams are provided through the side of the lower beam, perpendicular to the lower beam, and the outer surfaces of the support beams are recessed inward relative to the end faces of the lower beams. The sheave assembly includes a sheave beam and two sheaves. The sheave beam is installed between the two support beams, with the ends of the sheave beam extending beyond the outer surfaces of the support beams. The sheaves are symmetrically arranged at both ends of the sheave beam, and the shafts of the sheaves are located above the centerline of the sheave beam. By recessing the support beams inward and installing the sheaves slightly above the sheave beams, the sheaves are raised to the clearance area formed by the recessed support beams, thereby reducing the height of the sheave assembly and reducing the required pit depth.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to an elevator car frame. Background Technology

[0002] The common car frame in the market consists of an upper beam, side beams, a lower beam, and a rope sheave beam. The rope sheave beam is installed on the underside of the lower beam, so the pit depth of the shaft needs to meet the installation requirements. If the pit depth of the shaft cannot meet the requirements, the pit depth needs to be increased, and reinforcement and waterproofing also need to be considered, which not only prolongs the construction period but also increases the construction cost.

[0003] Based on the above-mentioned technical problems, this application proposes an elevator car frame. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator car frame to solve the technical problems mentioned in the background art. This purpose is achieved through the following technical solution: An elevator car frame includes two vertically arranged side beams, an upper beam fixedly connected between the upper ends of the side beams, a car bottom bracket fixedly connected between the lower ends of the side beams, and a sheave assembly fixedly connected to the lower end face of the car bottom bracket. The car bottom bracket includes a lower beam, which is fixedly connected between the lower ends of the side beams. Two support beams are provided through the side of the lower beam, the support beams are perpendicular to the lower beam, and the outer side of the support beams is recessed inward relative to the end face of the lower beam. The sheave assembly includes a sheave beam and two sheaves. The sheave beam is installed between the two support beams, the end of the sheave beam extends out of the outer side of the support beam, the sheaves are symmetrically arranged at both ends of the sheave beam, and the rotation axis of the sheaves is located above the centerline of the sheave beam.

[0005] Furthermore, an angle is provided between the sheave beam and the lower beam, and the horizontal projection of the sheave beam on the car bottom bracket is centrally symmetrical about the center point of the car bottom bracket.

[0006] Furthermore, the rope pulley beam includes two first C-shaped profiles with their openings facing away from each other in a mirror-like arrangement, and the rope pulley is installed between the two first C-shaped profiles; a rope-blocking plate is installed between the ends of the two first C-shaped profiles.

[0007] Furthermore, a buffer seat is installed on the lower end face of the rope sheave beam, and the buffer seat is located in the middle of the rope sheave beam.

[0008] Furthermore, a crossbar is installed between the ends of the two support beams. The end of the crossbar passes through the support beam and is flush with the end face of the lower beam. A pull plate is fixed to the end of the crossbar, and a diagonal tie rod is connected between the pull plate and the side beam.

[0009] Furthermore, a shock-absorbing pad is installed on the upper surface of the support beam.

[0010] Furthermore, the lower beam is a first U-shaped profile with its opening facing downwards. A safety clamp seat plate is fixed to the end of the lower beam, and a safety clamp is installed on the safety clamp seat plate. Side beam connecting plates are fixed to both sides of the safety clamp seat plate, and the side beams are vertically fixed to both ends of the lower beam through the side beam connecting plates.

[0011] Furthermore, the upper beam is a second U-shaped profile, with the opening of the upper beam facing downwards, and a safety clamp linkage mechanism is installed inside the upper beam.

[0012] Furthermore, the side beams are second C-shaped profiles, with the openings of the two side beams facing away from each other in a mirror-like arrangement. A safety clamp lever is installed inside the opening of the side beam, with the upper end of the safety clamp lever connected to the safety clamp linkage mechanism and the lower end of the safety clamp lever connected to the safety clamp.

[0013] Furthermore, two vertical connecting plates are fixed at the ends of the lower beam, and a connecting groove is provided on the safety clamp seat plate to mate with the connecting plates. The connecting plates are inserted into the connecting groove, and the safety clamp seat plate is welded and fixed to the connecting plates; the side beam connecting plate is fixedly connected to the connecting plates.

[0014] The technical solutions provided in this application have at least the following technical effects or advantages: 1. By retracting the support beam inward and installing the sheave on the upper part of the sheave beam, the sheave is raised to the clearance area formed by the inward retraction of the support beam, thereby reducing the height of the sheave assembly and reducing the required pit depth. 2. By installing safety clamps at both ends of the lower beam, the track gauge between the car side guide rails can be reduced, thereby improving the utilization rate of the shaft width direction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the elevator car frame structure according to an embodiment of this application; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a schematic diagram of the car bottom support plate structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the rope pulley assembly structure according to an embodiment of this application; Figure 5 This is a front view of the rope pulley assembly according to an embodiment of this application; Figure 6This is a schematic diagram of the installation of the rope pulley assembly according to an embodiment of this application.

[0017] Reference numerals: 1. Side beam; 2. Upper beam; 21. Safety gear linkage mechanism; 3. Car bottom bracket; 31. Lower beam; 311. Mounting groove; 312. Connecting piece; 32. Support beam; 33. Crossbar; 34. Pull ear plate; 35. Shock-absorbing pad; 36. Safety gear seat plate; 361. Connecting groove; 37. Side beam connecting plate; 4. Rope pulley assembly; 41. Rope pulley beam; 411. First C-shaped profile; 42. Rope pulley; 43. Rope stop plate; 44. Buffer seat; 5. Safety gear; 51. Safety gear pull rod; 6. Diagonal pull rod. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] like Figure 1 An elevator car frame is shown, including two vertically arranged side beams 1, an upper beam 2 fixedly connected between the upper ends of the side beams 1, a car bottom bracket 3 fixedly connected between the lower ends of the side beams 1, and a rope wheel assembly 4 fixedly connected to the lower end face of the car bottom bracket 3.

[0020] like Figure 3 , Figure 6 As shown, the car bottom bracket 3 includes a lower beam 31, a support beam 32, and a crossbar 33. The lower beam 31 is a first U-shaped profile with its opening facing downwards. Two through-beam mounting grooves 311 are respectively opened at both ends of the lower beam 31, with a distance between the mounting grooves 311 and the end face of the lower beam 31. The support beam 32 is inserted into the mounting grooves 311 and welded to the lower beam 31, so that the outer surface of the support beam 32 is recessed inwards relative to the end face of the lower beam 31. Both ends of the support beam 32 extend beyond the side of the lower beam 31, and the support beam 32 is perpendicular to the lower beam 31. A shock-absorbing pad 35 is installed at the end of the support beam 32, and the shock-absorbing pad 35 is fixed to the upper end face of the support beam 32 by bolts. The car is mounted on the car bottom bracket 3 via the shock-absorbing pad 35, achieving shock absorption for the car.

[0021] like Figure 1 , Figure 3 , Figure 6As shown, two crossbars 33 are welded and fixed between the ends of two support beams 32. The crossbars 33 are parallel to the lower beam 31, and the ends of the crossbars 33 pass through the support beams 32 and are flush with the end faces of the lower beam 31. The two crossbars 33 and the two support beams 32 form a rectangular frame structure. The ends of the lower beam 31, the ends of the crossbars 33, and the support beams 32 form an outward-facing clearance area. A pull plate 34 is welded and fixed to the end of the crossbar 33. The pull plate 34 is connected to the side beam 1 via a diagonal tie rod 6 to improve the structural strength of the car bottom bracket 3.

[0022] like Figure 1-3 , Figure 6 As shown, a safety clamp seat plate 36 and a side beam connecting plate 37 are fixed to both ends of the lower beam 31, respectively. A safety clamp 5 is screwed onto the safety clamp seat plate 36. Specifically, two vertical connecting pieces 312 are fixed to the ends of the lower beam 31. The connecting pieces 312 and the lower beam 31 are an integral structure. The safety clamp seat plate 36 is a U-shaped plate with a connecting groove 361 that mates with the connecting pieces 312. The connecting pieces 312 are inserted into the connecting groove 361 of the safety clamp seat plate 36, and the safety clamp seat plate 36 is fixed to the lower beam 31 by welding. The connecting pieces 312 have positioning holes. The side beam connecting plate 37 is screwed into the positioning holes of the connecting pieces 312 by bolts to achieve the positioning of the side beam connecting plate 37. Then, the side beam connecting plate 37 is fixed to the safety clamp seat plate 36 and the lower beam 31 by welding. The side beam 1 is vertically fixed to both ends of the lower beam 31 by the side beam connecting plate 37. Among them, the side beam 1 is the second C-shaped profile, and the openings of the two side beams 1 are set in a mirror image with opposite sides. The upper beam 2 is the second U-shaped profile, and the opening of the upper beam 2 is arranged downward. The two ends of the upper beam 2 are fixedly connected to the upper ends of the side beams 1 respectively. The upper beam 2, the lower beam 31 and the two side beams 1 are spliced ​​together to form a rectangular frame structure.

[0023] Safety clamp linkage mechanisms 21 are installed at both ends of the upper beam 2, and safety clamp pull rods 51 are installed in the openings of the side beam 1. The upper end of the safety clamp pull rods 51 is connected to the safety clamp linkage mechanisms 21, and the lower end of the safety clamp pull rods 51 is connected to the safety clamp 5. When the safety clamp linkage mechanism 21 is triggered, the safety clamp pull rods 51 drive the safety clamp 5 to clamp the guide rail, thereby braking the car and ensuring the safe operation of the elevator.

[0024] like Figure 4 , Figure 5 As shown, the sheave assembly 4 includes a sheave beam 41 and two sheaves 42. The sheave beam 41 includes two first C-shaped profiles 411 with their openings facing away from each other in a mirror-image configuration. The two sheaves 42 are symmetrically mounted between the ends of the two first C-shaped profiles 411, and the axis of rotation of the sheaves 42 is located above the central axis of the first C-shaped profiles 411, so that the sheaves 42 are located above the sheave beam 41. Preferably, a U-shaped rope-blocking plate 43 is installed between the ends of the two first C-shaped profiles 411 to prevent the elevator traction rope from slipping.

[0025] like Figure 1 , Figures 4-6 As shown, the sheave beam 41 is installed between two support beams 32. An angle is formed between the sheave beam 41 and the lower beam 31. The horizontal projection of the sheave beam 41 on the car bottom bracket 3 is centrally symmetrical about the center point of the car bottom bracket 3. The end of the sheave beam 41 extends beyond the outer side of the support beam 32, so that the sheave 42 is located in the avoidance area formed by the inward retraction of the support beam 32.

[0026] A buffer seat 44 is installed on the lower end face of the rope sheave beam 41. The buffer seat 44 is located in the middle of the rope sheave beam 41. When the elevator falls due to a malfunction, the buffer seat 44 abuts against the buffer at the bottom of the shaft to protect the elevator.

[0027] The technical solutions provided in this application have at least the following technical effects or advantages: 1. By retracting the support beam inward and installing the sheave on the upper part of the sheave beam, the sheave is raised to the clearance area formed by the inward retraction of the support beam, thereby reducing the height of the sheave assembly and reducing the required pit depth. 2. By installing safety clamps at both ends of the lower beam, the track gauge between the car side guide rails can be reduced, thereby improving the utilization rate of the shaft width direction.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An elevator car frame, comprising two vertically arranged side beams, an upper beam fixedly connected between the upper ends of the side beams, a car bottom bracket fixedly connected between the lower ends of the side beams, and a sheave assembly fixedly connected to the lower end face of the car bottom bracket, characterized in that, The car bottom bracket includes a lower beam, which is fixedly connected between the lower ends of the side beams. Two support beams are provided through the side of the lower beam. The support beams are perpendicular to the lower beam, and the outer surfaces of the support beams are recessed inward relative to the end faces of the lower beam. The rope pulley assembly includes a rope pulley beam and two rope pulleys. The rope pulley beam is installed between the two support beams. The end of the rope pulley beam extends out of the outer surface of the support beam. The rope pulleys are symmetrically arranged at both ends of the rope pulley beam, and the rotation axis of the rope pulleys is located above the centerline of the rope pulley beam.

2. An elevator car frame according to claim 1, characterized in that, An angle is provided between the rope sheave beam and the lower beam, and the horizontal projection of the rope sheave beam on the car bottom bracket is centrally symmetrical about the center point of the car bottom bracket.

3. An elevator car frame according to claim 1, characterized in that, The rope pulley beam includes two first C-shaped profiles with their openings facing away from each other in a mirror-like arrangement. The rope pulley is installed between the two first C-shaped profiles. A rope-blocking plate is installed between the ends of the two first C-shaped profiles.

4. An elevator car frame according to claim 1, characterized in that, A buffer seat is installed on the lower end face of the rope sheave beam, and the buffer seat is located in the middle of the rope sheave beam.

5. An elevator car frame according to claim 1, characterized in that, A crossbar is installed between the ends of the two support beams. The end of the crossbar passes through the support beam and is flush with the end face of the lower beam. A pull plate is fixed to the end of the crossbar, and a diagonal tie rod is connected between the pull plate and the side beam.

6. An elevator car frame according to claim 1, characterized in that, The upper end face of the support beam is equipped with a shock-absorbing pad.

7. An elevator car frame according to claim 1, characterized in that, The lower beam is a first U-shaped profile with its opening facing downwards. A safety clamp seat plate is fixed to the end of the lower beam, and a safety clamp is installed on the safety clamp seat plate. Side beam connecting plates are fixed to both sides of the safety clamp seat plate, and the side beams are vertically fixed to both ends of the lower beam through the side beam connecting plates.

8. An elevator car frame according to claim 7, characterized in that, The upper beam is a second U-shaped profile, with its opening facing downwards, and a safety clamp linkage mechanism is installed inside the upper beam.

9. An elevator car frame according to claim 8, characterized in that, The side beam is a second C-shaped profile, and the openings of the two side beams are mirror images of each other. A safety clamp pull rod is installed in the opening of the side beam. The upper end of the safety clamp pull rod is connected to the safety clamp linkage mechanism, and the lower end of the safety clamp pull rod is connected to the safety clamp.

10. An elevator car frame according to claim 7, characterized in that, Two vertical connecting pieces are fixed to the end of the lower beam. A connecting groove is provided on the safety clamp seat plate to mate with the connecting pieces. The connecting pieces are inserted into the connecting groove. The safety clamp seat plate is welded and fixed to the connecting pieces. The side beam connecting plate is fixedly connected to the connecting piece.

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