A counterweight device for automobile elevator

Abstract

The invention discloses a counterweight device for automobile elevators, belonging to the technical field of elevators. The device comprises a counterweight frame and two counterweight wheel components, wherein two columns are arranged side by side along the height direction on the inner side of the counterweight frame, and a plurality of counterweight blocks are slidably connected between the two columns and between the columns and the counterweight frame, and the two counterweight wheel components are arranged on the top of the counterweight frame and are respectively located on the upper side of the two columns. The installation position of the counterweight wheel component is opposite to the installation position of the column, and when the upper beam of the counterweight frame is subjected to the pulling force from the counterweight wheel component, a part of the pulling force can be shared by the column and the lower beam, so that the tensile and bending resistance of the upper beam is significantly improved, which is helpful to improve the structural strength of the counterweight frame and the ability to bear heavy loads. When the impact seat contacts the buffer device at the bottom of the elevator shaft, the impact seat transmits the pressure to the lower beam and the column, and a part of the pressure is shared by the column and the upper beam, so that the tensile, compressive and bending resistance of the lower beam is significantly improved.

Description

Technical Field

[0001] The invention relates to a counterweight device for a car elevator and belongs to the technical field of elevators. Background Art

[0002] At present, the counterweight device is an integral part of the elevator traction system. Its function is to reduce the power of the traction motor and the torque on the traction wheel and worm gear. The counterweight device is generally composed of a counterweight frame, a counterweight wheel assembly, a counterweight block and a guide shoe.

[0003] For example, a Chinese patent document with publication number CN208008293U discloses an inclined double counterweight wheel counterweight device, including an upper beam; a double counterweight wheel assembly parallel and inclined to each other is provided above the upper beam, the double counterweight wheel assembly includes a first counterweight wheel assembly provided at the left end of the upper beam and a second counterweight wheel assembly provided at the right end of the upper beam; and also includes a lower beam provided below the upper beam, a parallel left straight beam and a right straight beam are provided between the lower beam and the upper beam, and a counterweight block is provided between the left straight beam and the right straight beam.

[0004] For another example, a Chinese patent document with publication number CN208166331U discloses a high-load elevator counterweight frame structure, wherein the traction ratio of the counterweight frame is four to one, and the counterweight frame includes an upper beam plate and a lower beam plate with longitudinal spacing facilities, and also includes a detachable counterweight unit, wherein the counterweight unit includes two vertically arranged straight beams with guide rails and a counterweight block arranged in the straight beams and limited to the guide rails, and the counterweight unit is respectively connected to the upper beam plate and the lower beam plate through the two ends of the straight beams.

[0005] However, the above two devices each include two pairs of heavy wheels, and the installation position of the heavy wheels on the upper beam is staggered from the straight beam by a certain distance. The upper beam is easily deformed or even bent, so the structural strength of the upper beam is required to be very high; moreover, this installation method of the heavy wheels seriously limits the ability of the frame to withstand heavy loads. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a counterweight device for a car elevator.

[0007] The present invention is achieved through the following technical solutions:

[0008] A car elevator counterweight device comprises a counterweight frame and two counterweight wheel components, wherein two columns are arranged side by side on the inner side of the counterweight frame along the height direction, a plurality of counterweight blocks are slidably connected between the two columns and between the columns and the counterweight frame, and the two counterweight wheel components are arranged on the top of the counterweight frame and are respectively located directly above the two columns.

[0009] The upper end surface of the column is flush with the top surface of the counterweight frame, and the lower end surface is flush with the bottom surface of the counterweight frame.

[0010] The upper end of the column is detachably connected to the upper beam of the counterweight frame, and the lower end is detachably connected to the lower beam of the counterweight frame.

[0011] The counterweight frame is a square frame, comprising two straight beams arranged side by side, the upper ends of the two straight beams are connected by two upper beams arranged side by side, and the lower ends are connected by two lower beams arranged side by side.

[0012] A plurality of reinforcing plates B are arranged side by side on the upper beam, a reinforcing plate A is arranged on the upper beam at a position corresponding to the column, and a reinforcing plate C is arranged on the upper beam at a position corresponding to the counterweight wheel component.

[0013] A plurality of reinforcing plates D are arranged side by side on the lower beam.

[0014] Two bumpers are arranged side by side at the bottom of the counterweight frame, the bumpers are connected to the two lower beams, and the installation positions of the two bumpers and the two columns correspond.

[0015] A plurality of compensation chain suspension components are arranged side by side at the bottom of the counterweight frame, and the compensation chain suspension components are connected to the two lower beams.

[0016] The counterweight wheel component includes a U-shaped plate A, a counterweight wheel and a base. The counterweight wheel is located on the inner side of the U-shaped plate A and is connected to the U-shaped plate A through a connecting shaft. The base is connected to the U-shaped opening end of the U-shaped plate A.

[0017] U-shaped reinforcing plates are provided on both side plates of the U-shaped plate A; the base comprises a seat plate, a connecting channel steel is provided on the seat plate, and a fixing channel steel is provided at the bottom of the seat plate.

[0018] The beneficial effects of the present invention are:

[0019] 1. The installation position of the counterweight wheel component is opposite to the installation position of the column. When the upper beam of the counterweight frame is subjected to the tension from the counterweight wheel component, part of the tension can be shared by the column and the lower beam, so that the tensile and bending resistance of the upper beam is significantly improved, which is helpful to improve the structural strength of the counterweight frame and its ability to bear heavy loads.

[0020] 2. When the impact seat contacts the buffer device at the bottom of the elevator shaft, the impact seat transfers the pressure to the lower beam and the column, and part of the pressure is shared by the column and the upper beam, so that the tensile, compressive and bending resistance of the lower beam is significantly improved.

[0021] 3. Arranging the tensile stress-bearing structural parts in a vertical straight line improves the overall structural strength and heavy-load bearing capacity of the counterweight device without increasing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2This is a schematic diagram of the structure of the present invention after the counterweight block is removed;

[0024] Figure 3 It is a structural schematic diagram of the upper beam of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the lower beam of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the counterweight block of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the counterweight wheel component of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the counterweight wheel and the connecting shaft of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the base of the present invention;

[0030] Fig. 9 for Figure 8 Schematic diagram of the structure from another perspective;

[0031] Fig.10 It is a schematic structural diagram of the compensation chain suspension assembly of the present invention;

[0032] Fig.11 for Fig.10 Schematic diagram of the structure from another perspective;

[0033] Fig.12 It is a structural schematic diagram of the bumper of the present invention.

[0034] In the figure: 1-counterweight frame, 10-straight beam, 11-column, 12-upper beam, 120-reinforcement plate A, 121-reinforcement plate B, 122-reinforcement plate C, 13-lower beam, 130-reinforcement plate D, 2-counterweight block, 3-counterweight wheel component, 30-U-shaped plate A, 31-counterweight wheel, 32-rope stop rod, 33-base, 330-seat plate, 331-connecting channel steel, 332-fixed channel steel, 34-shaft stop plate, 35-connecting shaft, 36-U-shaped reinforcement plate, 4-limiting pressure plate, 5-compensation chain suspension assembly, 50-U-shaped plate B, 51-U-shaped lifting ring, 52-reinforcement plate F, 6-bump seat, 60-bump plate, 61-vertical plate, 62-reinforcement plate G. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0036] like Figures 1 to 12As shown, a car elevator counterweight device of the present invention comprises a counterweight frame 1 and two counterweight wheel components 3, two columns 11 are installed side by side along the height direction on the inner side of the counterweight frame 1, a plurality of counterweight blocks 2 are slidably connected between the two columns 11 and between the columns 11 and the counterweight frame 1, and the two counterweight wheel components 3 are installed on the top of the counterweight frame 1 and are respectively located on the upper side of the two columns 11. When in use, the installation position of the counterweight wheel component 3 is opposite to the installation position of the column 11. When the upper beam 12 of the counterweight frame 1 is subjected to the pulling force from the counterweight wheel component 3, a part of the pulling force can be shared by the column 11 and the lower beam 13, thereby preventing the upper beam 12 from being deformed or bent by pulling, which helps to improve the strength of the counterweight frame 1 and the ability to bear heavy loads.

[0037] The upper end surface of the column 11 is flush with the top surface of the counterweight frame 1, and the lower end surface is flush with the bottom surface of the counterweight frame 1. When the bumper 6 contacts the buffer device at the bottom of the elevator shaft, the bumper 6 transfers the pressure to the lower beam 13 and the column 11, and a part of the pressure is shared by the column 11 and the upper beam 12, thereby preventing the lower beam 13 from deforming.

[0038] The upper end of the column 11 is detachably connected to the upper beam 12 of the counterweight frame 1, and the lower end is detachably connected to the lower beam 13 of the counterweight frame 1. The upper beam 12 and the lower beam 13 are connected as a whole through the straight beam 10 and the column 11. When in use, the cross-sectional shape of the upper beam 12 and the lower beam 13 is C-shaped, and the cross-sectional shape of the straight beam 10 is U-shaped. The straight beam 10, the upper beam 12 and the lower beam 13 are all made of hot-rolled steel plates, which helps to reduce the difficulty of processing and labor intensity. The column 11 is made of two hot-rolled steel plates with a C-shaped cross section welded back to back.

[0039] The counterweight frame 1 is a square frame, including two straight beams 10 arranged side by side. The upper ends of the two straight beams 10 are connected by two upper beams 12 arranged side by side, and the lower ends are connected by two lower beams 13 arranged side by side.

[0040] A plurality of reinforcing plates B121 are welded side by side on the upper beam 12, a reinforcing plate A120 is welded on the upper beam 12 at a position corresponding to the column 11, and a reinforcing plate C122 is welded on the upper beam 12 at a position corresponding to the counterweight wheel component 3. When in use, the structural strength of the upper beam 12 is improved by the reinforcing plates B121, the strength of the connection between the upper beam 12 and the column 11 is improved by the reinforcing plates A120, and the strength of the connection between the upper beam 12 and the counterweight wheel component 3 is improved by the reinforcing plates C122.

[0041] A plurality of reinforcing plates D130 are welded side by side on the lower beam 13. The reinforcing plates D130 improve the strength of the lower beam 13.

[0042] Two bumpers 6 are installed side by side at the bottom of the counterweight frame 1, and the bumpers 6 are connected to the two lower beams 13, and the installation positions of the two bumpers 6 and the two columns 11 correspond. When in use, the bumper 6 includes a bumper plate 60, and two vertical plates 61 are welded side by side on the bumper plate 60. A reinforcing plate G62 is welded between the vertical plates 61 and the bumper plate 60, and the reinforcing plate G62 is located on the outside of the two vertical plates 61. The lower end of the column 11 is located between the two vertical plates 61. The two lower beams 13 are connected by the bumper 6, which helps to improve the overall structural strength of the two lower beams 13.

[0043] A plurality of compensation chain suspension assemblies 5 are installed side by side at the bottom of the counterweight frame 1, and the compensation chain suspension assemblies 5 are connected to the two lower beams 13. When in use, the compensation chain suspension assembly 5 includes a U-shaped plate B50 and a U-shaped lifting ring 51, and the U-shaped lifting ring 51 is installed at the bottom of the inner side of the U-shaped plate B50, and a reinforcing plate F52 is welded on the U-shaped plate B50, and the strength of the connection between the U-shaped lifting ring 51 and the U-shaped plate B50 is improved by the reinforcing plate F52.

[0044] The counterweight wheel component 3 includes a U-shaped plate A30, a counterweight wheel 31 and a base 33. The counterweight wheel 31 is located inside the U-shaped plate A30 and connected to the U-shaped plate A30 through a connecting shaft 35. The base 33 is connected to the U-shaped opening end of the U-shaped plate A30. When in use, a rope blocking rod 32 is installed between the two side plates of the U-shaped plate A30, a limiting notch is opened at the end of the connecting shaft 35, and an axis blocking plate 34 is installed on the U-shaped plate A30 at a position corresponding to the notch to prevent the connecting shaft 35 from rotating.

[0045] U-shaped reinforcement plates 36 are installed on both side plates of the U-shaped plate A30; the base 33 includes a seat plate 330, a connecting channel steel 331 is welded on the seat plate 330, and a fixed channel steel 332 is welded at the bottom of the seat plate 330. When in use, the structural strength of the U-shaped plate A30 is improved by the U-shaped reinforcement plate 36. According to actual product requirements, the connecting channel steel 331 can be rotated at a certain angle relative to the seat plate 330, so that the counterweight wheel 31 can be rotated at a certain angle relative to the seat plate 330, so that the counterweight wheel 31 can be rotated or tilted at a certain angle relative to the counterweight frame 1, thereby expanding the application range of the counterweight device and improving the practicality of the counterweight device. After the connecting channel steel 331 is rotated to the required angle relative to the seat plate 330, the seat plate 330, the connecting channel steel 331 and the fixed channel steel 332 are welded together by fillet welding and plug welding processes, and the three are connected together using high-strength bolts, nuts, gaskets, etc. to ensure that the base 33 has good tensile strength.

[0046] Specifically, a limit plate 4 is installed between the straight beam 10 and the column 11 and between the two columns 11, and the limit plate 4 is located on the upper side of the counterweight block 2. The limit plate 4 presses the counterweight block 2 to prevent the counterweight block 2 from sliding relative to the counterweight frame 1. The traction ratio of the counterweight wheel component 3 is applicable to 2:1, 4:1, 6:1, 8:1, etc., and is particularly suitable for heavy-load elevators.

[0047] In summary, the automobile elevator counterweight device of the present invention has the following beneficial effects:

[0048] 1. The installation position of the counterweight wheel component 3 is opposite to the installation position of the column 11. When the upper beam 12 of the counterweight frame 1 is subjected to the pulling force from the counterweight wheel component 3, the column 11 and the lower beam 13 can share part of the pulling force, so that the tensile and bending resistance of the upper beam 12 is significantly improved, which is helpful to improve the structural strength of the counterweight frame 1 and the ability to bear heavy loads.

[0049] 2. When the bumper 6 contacts the buffer device at the bottom of the elevator shaft, the bumper 6 transfers the pressure to the lower beam 13 and the column 11, and part of the pressure is shared by the column 11 and the upper beam 12, so that the tensile, compressive and bending resistance of the lower beam 13 is significantly improved.

[0050] 3. Arranging the tensile stress-bearing structural parts in a vertical straight line improves the overall structural strength and heavy-load bearing capacity of the counterweight device without increasing the cost.

Claims

1. A car elevator counterweight device, characterized in that: The invention comprises a counterweight frame (1) and two counterweight wheel components (3), wherein two columns (11) are arranged side by side on the inner side of the counterweight frame (1) along the height direction, and a plurality of counterweight blocks (2) are slidably connected between the two columns (11) and between the columns (11) and the counterweight frame (1), and the two counterweight wheel components (3) are arranged on the top of the counterweight frame (1) and are respectively located directly above the two columns (11); The counterweight frame (1) is a square frame, comprising two straight beams (10) arranged side by side, the upper ends of the two straight beams (10) being connected by two upper beams (12) arranged side by side, and the lower ends being connected by two lower beams (13) arranged side by side; A plurality of reinforcing plates B (121) are arranged side by side on the upper beam (12), a reinforcing plate A (120) is arranged on the upper beam (12) at a position corresponding to the column (11), and a reinforcing plate C (122) is arranged on the upper beam (12) at a position corresponding to the counterweight wheel component (3); A plurality of reinforcing plates D (130) are arranged side by side on the lower beam (13); Two bumper seats (6) are arranged side by side at the bottom of the counterweight frame (1), the bumper seats (6) are connected to the two lower beams (13), and the installation positions of the two bumper seats (6) and the two columns (11) correspond to each other; A plurality of compensation chain suspension assemblies (5) are arranged side by side at the bottom of the counterweight frame (1), and the compensation chain suspension assemblies (5) are connected to two lower beams (13).

2. The counterweight device for a car elevator according to claim 1, characterized in that: The upper end surface of the column (11) is flush with the top surface of the counterweight frame (1), and the lower end surface is flush with the bottom surface of the counterweight frame (1).

3. The counterweight device for a car elevator according to claim 1, characterized in that: The upper end of the column (11) is detachably connected to the upper beam (12) of the counterweight frame (1), and the lower end is detachably connected to the lower beam (13) of the counterweight frame (1).

4. The counterweight device for a car elevator according to claim 1, characterized in that: The counterweight wheel component (3) comprises a U-shaped plate A (30), a counterweight wheel (31) and a base (33); the counterweight wheel (31) is located inside the U-shaped plate A (30) and is connected to the U-shaped plate A (30) via a connecting shaft (35); and the base (33) is connected to the U-shaped opening end of the U-shaped plate A (30).

5. The counterweight device for a car elevator according to claim 4, characterized in that: U-shaped reinforcing plates (36) are provided on both side plates of the U-shaped plate A (30); the base (33) comprises a seat plate (330), a connecting channel steel (331) is provided on the seat plate (330), and a fixing channel steel (332) is provided at the bottom of the seat plate (330).

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