Shock-absorbing upper beam structure of double-car top wheels and double-car top wheel car

Abstract

The present invention relates to a shock-absorbing upper beam structure of double car top wheels and a double car top wheel car, comprising an upper beam and two car top wheels installed on the upper beam to suspend the car, a car top wheel support frame is fixed at the bottom of the upper beam, and the car top wheel support frame has connection surfaces at both ends along the length direction of the upper beam, and the car top wheels are respectively installed on corresponding fixing frames, and each fixing frame is respectively connected to the corresponding connection surface by a shock-absorbing pad, and the direction of the resultant force of each car top wheel under the action of the traction rope is perpendicular to the connection surface corresponding to the car top wheel. The present invention eliminates the shear force on the shock-absorbing pad by arranging the shock-absorbing pad on the tangent plane of the point where the car top wheel is acted by the resultant force of the traction rope, thereby ensuring the service life of the shock-absorbing pad and preventing the two car top wheels from shifting toward the middle.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a shock-absorbing upper beam structure of double-car top wheels and a double-car top wheel car. Background Art

[0002] The double car top wheel upper beam structure is commonly used in machine room-less elevators and machine room elevators that need to increase the wrap angle. When using double car top wheels, the two car top wheels will be squeezed to the middle due to the tension of the wire rope (such as Figure 1 As shown in the figure, shear force will be generated on the shock-absorbing pad between the car top wheel and the upper beam. In order to prevent the two car top wheels from being squeezed toward the middle, in the prior art, a rigid fixing beam is usually used to fix the two car top wheels. For example, the car top wheel installation cover and the auxiliary beam in the prior art both play a rigid fixing role for the two car top wheels. However, due to processing errors and assembly errors, the axial (or radial) parallelism of the two car top wheels fixed by the rigid beam and the parallelism of the car top wheel rope groove are very difficult to ensure. When the axial (or radial) parallelism of the two car top wheels deviates, due to the rigid connection of the rigid beam, the two car top wheels cannot correct their axial (or radial) parallelism by themselves through the compression of the shock-absorbing pad. This will cause the wire rope to twist when entering and exiting the car top wheel rope groove during elevator operation. This twisting causes the wire rope and the car top wheel to vibrate and make noise, which seriously affects the comfort of elevator operation. Summary of the invention

[0003] Based on this, it is necessary to provide a shock-absorbing upper beam structure of a double-car top wheel and a double-car top wheel car that solves at least one of the above problems.

[0004] A shock-absorbing upper beam structure of a double car top wheel comprises an upper beam and two car top wheels installed on the upper beam to suspend a car, a car top wheel support frame is fixed to the bottom of the upper beam, and the car top wheel support frame has connecting surfaces at both ends along the length direction of the upper beam;

[0005] The car top wheels are respectively installed on corresponding fixing frames, and each fixing frame is respectively connected to the corresponding connection surface through a shock-absorbing pad. The direction of the resultant force of each car top wheel under the action of the traction rope is perpendicular to the connection surface corresponding to the car top wheel.

[0006] Optionally, the two connecting surfaces are disposed opposite to each other and facing obliquely downward, each forming an angle of 30 to 60 degrees with the horizontal plane, and are complementary angles to each other.

[0007] Optionally, the two connecting surfaces are at 45 degrees relative to the horizontal plane.

[0008] Optionally, the upper beam comprises two beams arranged side by side, the two upper beams are connected at the ends in the length direction by a mounting plate, the car top wheel support frame comprises two support beams arranged side by side, each of the support beams is fixed to the bottom surface of a corresponding upper beam, and the ends on the same side of the two support beams serve as the connecting surface; the two car top wheels are arranged between the two upper beams in the horizontal direction.

[0009] Optionally, the fixed frame includes a base plate and a wheel frame fixed to the base plate, the car top wheel is rotatably mounted on the corresponding wheel frame, and the two corresponding sides of the base plate are respectively connected to the end of a corresponding support beam through the shock-absorbing pad.

[0010] Optionally, the end portion of the support beam is provided with a connecting plate which is integrally bent or separately fixed, and the side of the connecting plate facing obliquely downward serves as the connecting surface.

[0011] Optionally, pads are respectively fixed to two opposite sides of the shock-absorbing pad, wherein one pad is connected to the corresponding fixing frame via connecting bolts, and the other pad is connected to the corresponding connecting surface via connecting bolts.

[0012] Optionally, the car top wheel support frame, the shock absorbing pad and the fixing frame are provided with correspondingly positioned connecting holes, and the three are connected by an anti-drop rod passing through the connecting holes.

[0013] Optionally, the anti-slip rod is a screw rod and is gap-fitted with the connecting hole, and a nut and an axial limit pin to prevent the nut from slipping out are installed at the end of the screw rod; the two ends of the anti-slip rod are anti-slip heads restricted by the connecting hole, and the anti-slip heads at both ends are respectively against the car top wheel support frame and the fixing frame through buffer pads.

[0014] The present application may also provide a double-top wheel car, comprising a car and a shock-absorbing upper beam structure as described above fixed to the top of the car.

[0015] The shock-absorbing upper beam structure of double car top wheels and the double car top wheel car of the present application include an upper beam and two car top wheels installed on the upper beam to suspend the car, a car top wheel support frame is fixed at the bottom of the upper beam, and the car top wheel support frame has connection surfaces at both ends along the length direction of the upper beam, and the car top wheels are respectively installed on corresponding fixing frames, and each fixing frame is respectively connected to the corresponding connection surface by a shock-absorbing pad, and the direction of the resultant force of each car top wheel under the action of the traction rope is perpendicular to the connection surface corresponding to the car top wheel. The present application eliminates the shear force on the shock-absorbing pad by setting the shock-absorbing pad on the tangent plane of the point where the car top wheel is acted by the resultant force of the traction rope, prolongs the service life of the shock-absorbing pad, and prevents the two car top wheels from shifting toward the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the direction of the combined force of the double-car top wheels under the action of the traction rope in one embodiment of the present application;

[0017] Figure 2 A schematic diagram of a shock-absorbing upper beam structure in one embodiment;

[0018] Figure 3 In one embodiment Figure 2 An enlarged schematic diagram of the top wheel part of the car;

[0019] Figure 4 A schematic diagram of the end portions of an upper beam and a car top wheel support frame in one embodiment;

[0020] Figure 5 In one embodiment Figure 2 Schematic diagram of the A-direction viewing angle;

[0021] Figure 6 In one embodiment Figure 5 An enlarged schematic diagram of the middle shock-absorbing pad portion;

[0022] Description of Figure Numbers:

[0023] 1. Upper beam; 11. Mounting plate; 12. Dust cover;

[0024] 2. Top wheel of the sedan chair;

[0025] 3. Car top wheel support frame; 31. Support beam; 32. Connecting part (connecting plate);

[0026] 4. fixed frame; 41. base plate; 42. wheel frame; 421. bending part;

[0027] 5. Shock-absorbing pad; 51. Pad (connecting the fixing frame); 511. Connecting bolt; 52. Pad (connecting the supporting beam); 521. Connecting bolt;

[0028] 6. Anti-drop rod; 61. Axial limit pin. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] like Figure 2 As shown, an embodiment of the present application provides a shock-absorbing upper beam structure of a double car top wheel, comprising an upper beam 1 and two car top wheels 2 installed on the upper beam 1 to suspend the car, a car top wheel support frame 3 is fixed to the bottom of the upper beam 1, and the car top wheel support frame 3 has connection surfaces at both ends along the length direction of the upper beam 1. The car top wheels 2 are respectively installed on corresponding fixing frames 4, and each fixing frame 4 is respectively connected to the corresponding connection surface by a shock-absorbing pad 5, and the direction of the resultant force of each car top wheel 2 under the action of the traction rope is perpendicular to the connection surface corresponding to the car top wheel 2.

[0033] like Figure 1 As shown, each car top wheel 2 is subjected to pulling forces in two directions of the traction rope, one of which F1 is vertically upward, and the other F2 is along the direction of the line connecting the two car top wheels, such as the horizontal direction, and the combined force of the two is F3.

[0034] In the prior art, the shock-absorbing pad 5 is usually arranged at a position extending in the horizontal direction on the bottom surface or the top surface of the car top wheel 2. Compared with the present application, its connecting surface can be regarded as arranged horizontally. The direction of the combined force of the tension F1 and the tension F2 is at an angle to the thickness direction of the shock-absorbing pad 5, so that the shock-absorbing pad 5 is subjected to shear force for a long time, is easily damaged, and has a short service life.

[0035] In this embodiment, the connection surface for installing the shock-absorbing pad 5 is perpendicular to the direction of the resultant force of the two tensions of the traction cable, that is, the direction of the resultant force of the tension F1 and the tension F2 is consistent with the thickness direction of the shock-absorbing pad 5. This can avoid the formation of shear force on the shock-absorbing pad 5 and extend the life of the shock-absorbing pad 5.

[0036] In this embodiment, the two car top wheels 2 are not relatively fixed by a rigid beam. When there is a deviation in the parallelism of the axles of the two car top wheels 2 (for example, due to processing errors and assembly errors when manufacturing and installing the rigid beam), the deviation can be corrected by the shock-absorbing pad 5 through force deformation to ensure the parallelism of the axles of the two car top wheels 2, thereby making the elevator run smoothly.

[0037] Furthermore, the shock-absorbing pads 5 are arranged on the connecting surfaces at both ends of the car top wheel support frame 3 through the fixing frame 4, wherein the connecting surfaces are inclined surfaces and are perpendicular to the direction of the combined force of the traction force.

[0038] In this embodiment, the two connecting surfaces are disposed opposite to each other and face obliquely downward, and are 30 to 60 degrees from the horizontal plane, and are complementary angles to each other.

[0039] In this embodiment, since the winding section and the winding section of the traction rope around the two car top wheels 2 are parallel to each other, the tension F1 on each car top wheel is a vertical upward force. However, the position and shape between the two car top wheels can be arranged and adjusted according to actual conditions, and the direction of the tension F2 on each car top wheel 2 may change and not be horizontal, so the direction of the resultant force on each car top wheel 2 also changes accordingly. Therefore, the connection surface corresponding to each car top wheel should be based on the principle of maintaining verticality with the direction of the resultant force received at that location.

[0040] In this embodiment, when the two car top wheels are in the same horizontal plane, that is, when the tension F2 on each car top wheel extends horizontally toward the other car top wheel, the two connecting surfaces are at 45 degrees relative to the horizontal plane. Figure 1 As shown, since the combined force direction of the pulling force (F1, F2) of the traction rope on each car top wheel 2 is at an angle of 45 degrees relative to the horizontal plane, the connecting surface is also set to be at an angle of 45 degrees with the horizontal plane, so that the shock-absorbing pad 5 set on the connecting surface eliminates the shear force and starts the shock-absorbing effect at the same time.

[0041] like Figure 4 As shown, the upper beam 1 includes two upper beams 1 arranged side by side, and the two upper beams 1 are connected at the end parts in the length direction by a mounting plate 11. The car top wheel support frame 3 includes two support beams 31 arranged side by side, and each support beam 31 is fixed to the bottom surface of a corresponding upper beam 1, and the end positions on the same side of the two support beams 31 serve as connecting surfaces.

[0042] Furthermore, the ends of the two support beams 31 on the same side are provided with inwardly bent connection parts 32 for connecting the shock absorbing pads 5. Connection holes are provided on the connection parts 32, and a plurality of connection holes may be provided to ensure the necessary strength.

[0043] In this embodiment, two car top wheels 2 are arranged between two upper beams 1 in the horizontal direction, which reduces the overall height and saves the top space of the hoistway.

[0044] In this embodiment, the shock-absorbing upper beam structure is further provided with a dust cover 12 straddling the tops of the two upper beams to prevent dust or other foreign matter from falling onto the car top wheels and reduce potential safety hazards.

[0045] like Figure 3 As shown, the fixing frame 4 includes a base plate 41 and a wheel frame 42 fixed to the base plate 41 , the car top wheel 2 is rotatably mounted on the corresponding wheel frame 42 , and the two corresponding sides of the base plate 41 are respectively connected to the end of a corresponding support beam 31 through a shock-absorbing pad 5 .

[0046] In this embodiment, a wheel frame 42 is provided at both axial ends of each car top wheel 2, and the wheel frame 42 includes two supporting plates arranged opposite to each other. The car top wheel 2 is rotatably connected between the two supporting plates through a wheel axle.

[0047] like Figure 5 As shown in FIG. 6 , the bottoms of the two support plates have relatively outward-turned bent portions 421, which are connected to the base plate 41 by bolts. The two outer sides of the same base plate 41 are connected to the end portions of the two support beams 31 by shock-absorbing pads 5.

[0048] In this embodiment, the end of the support beam 31 is provided with a connecting plate which is bent integrally or fixed separately, and the side of the connecting plate facing obliquely downward is used as a connecting surface. Figure 2 The connecting portion 32 shown in FIG.

[0049] Furthermore, the longitudinal sections of the two support beams 31 are inverted trapezoids, and the two sides of the trapezoids are where the connection surfaces are located.

[0050] like Figure 3 As shown in FIG. 6 , pads are fixed to two opposite sides of the shock-absorbing pad 5 , one pad 51 is connected to the corresponding fixing frame 4 via a connecting bolt 511 , and the other pad 52 is connected to the corresponding connecting surface via a connecting bolt 521 .

[0051] In this embodiment, the connection plates located on the same side of the two support beams 31 are connected to the base plate 41 of the fixing frame 4 through the corresponding shock-absorbing pads 5. Among them, the pad 52 arranged on the side of the shock-absorbing pad 5 facing the car top wheel 2 is connected to the corresponding connecting surface of the support beam 31 through the connecting bolts 521, and the pad 51 arranged on the side of the shock-absorbing pad 5 facing away from the car top wheel 2 is connected to the base plate 41 of the corresponding fixing frame 4 through the connecting bolts 511.

[0052] Furthermore, the pads arranged on both sides of the shock-absorbing pad 5, namely the pads 51 and 52, extend to both ends in the length direction of the shock-absorbing pad 5, and installation holes for cooperating with the connecting bolts 511 and 521 are opened at both ends of the pads in the length direction.

[0053] The backing plate is a steel plate, and other materials that can ensure strength can also be used in different embodiments. The shock-absorbing pad 5 is natural rubber, and can also be other elastic materials.

[0054] When there is a deviation in the axial or radial parallelism of the car top wheels 2, the steel wire rope will be twisted when entering and exiting the grooves on the two car top wheels 2. The twisting will generate a force to correct the deviation. The force corrects the axial (or radial) parallelism deviation of the two car top wheels 2 by compressing the shock-absorbing pad 5, ensuring that the steel wire rope will not be twisted when entering and exiting the grooves when the elevator is running, thereby reducing vibration and noise.

[0055] like Figure 2As shown, the car top wheel support frame 3, the shock absorbing pad 5 and the fixing frame 4 are provided with corresponding connection holes, and the three are connected by an anti-drop rod 6 penetrating the connection holes.

[0056] Specifically, connection holes are provided at the center of the connection plate of the two support beams 31 of the car top wheel support frame 3, the center of the shock absorbing pad 5, and the places on both sides of the base plate 41 in the fixing frame 4 corresponding to the centers of the two corresponding shock absorbing pads 5. On one side of the support beam 31, the anti-slip rod 6 passes through the connection plate, the shock absorbing pad 5 and the base plate 41 in sequence to prevent the three from falling off. Two anti-slip rods 6 are provided at each end of the car top wheel support frame 3, and the two anti-slip rods 6 on the same side of the car top wheel support frame 3 are respectively provided on both sides of the axial direction of the car top wheel 2, respectively connecting the connection plates of the two support beams 31 and the corresponding shock absorbing pads 5 with both sides of the base plate 41.

[0057] Specifically, the pads arranged at two opposite sides of the shock-absorbing pad 5 are provided with corresponding avoidance holes for avoiding the anti-slip rod 6 .

[0058] In this embodiment, the anti-drop rod 6 is a screw rod and is clearance-matched with the connecting hole. A nut and an axial limit pin 61 for preventing the nut from slipping out are installed at the end of the screw rod.

[0059] In this embodiment, when the screw passes through the connecting plate, the shock absorbing pad 5 and the base plate 41, there is a certain gap with the inner wall of the connecting hole to prevent the shock absorbing pad 5 from being torn when the car is thrown upward during an emergency stop.

[0060] In this embodiment, the axial limiting pin 61 is a cylindrical pin.

[0061] In this embodiment, both ends of the anti-slip rod 6 are anti-slip heads restricted by the connection holes, and the anti-slip heads at both ends are respectively abutted against the car top wheel support frame 3 and the fixing frame 4 through buffer pads.

[0062] Specifically, both ends of the screw rod are respectively supported by anti-slipping heads against the connecting plate and the base plate 41, and the size of the anti-slipping heads is limited by the size of the connecting hole. Buffer pads are provided between the anti-slipping heads, the connecting plate and the base plate 41 to prevent the anti-slipping heads from directly contacting the connecting plate and the base plate 41, thereby preventing noise from being generated when the car is running or braking.

[0063] In this embodiment, the buffer pad may be a nylon pad or other materials.

[0064] In this embodiment, the anti-slip heads at both ends may be nuts, or one end may be a nut and the other end may be the head of the screw rod.

[0065] When the nut method is adopted, two nuts can be stacked, and the two nuts are locked with each other to prevent loosening, and the axial limit pin 61 is set at the end of the screw.

[0066] An embodiment of the present application also provides a double-top wheel car, comprising the above-mentioned shock-absorbing upper beam structure fixed to the top of the car.

[0067] The shock-absorbing upper beam structure of the double car top wheel is provided with a shock-absorbing pad on the section of the car top wheel at the point where the traction force is applied to the car top wheel, so as to eliminate the shear force on the shock-absorbing pad and increase the service life of the shock-absorbing pad. In addition, when the car top wheel is deflected, the deflection can be automatically repaired by the shock-absorbing pad. The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A shock-absorbing upper beam structure for double car top wheels, comprising an upper beam and two car top wheels mounted on the upper beam to suspend the car, characterized in that: A car top wheel support frame is fixed to the bottom of the upper beam, and the car top wheel support frame has connecting surfaces at both ends along the length direction of the upper beam; The car top wheels are respectively mounted on corresponding fixing frames, and each fixing frame is respectively connected to a corresponding connection surface by a shock absorbing pad, and the direction of the resultant force of each car top wheel under the action of the traction rope is perpendicular to the connection surface corresponding to the car top wheel; The upper beams include two arranged side by side, and the two upper beams are connected at the ends in the length direction by a mounting plate. The car top wheel support frame includes two support beams arranged side by side, and each support beam is fixed to the bottom surface of a corresponding upper beam, and the ends on the same side of the two support beams serve as the connecting surface; The two car top wheels are arranged between the two upper beams in the horizontal direction; The fixed frame includes a base plate and a wheel frame fixed to the base plate, the car top wheel is rotatably mounted on the corresponding wheel frame, and two corresponding sides of the base plate are respectively connected to the end of a corresponding support beam through the shock-absorbing pad; Pads are fixed to two opposite sides of the shock-absorbing pad, one of which is connected to the corresponding fixing frame by a connecting bolt, and the other is connected to the corresponding connecting surface by a connecting bolt; The car top wheel support frame, the shock absorbing pad and the fixing frame are provided with corresponding connection holes, and the three are connected by an anti-drop rod penetrating the connection holes.

2. The shock-absorbing upper beam structure according to claim 1, characterized in that: The two connecting surfaces are arranged opposite to each other and face obliquely downward, and are 30 to 60 degrees from the horizontal plane respectively, and are complementary angles to each other.

3. The shock-absorbing upper beam structure according to claim 2, characterized in that: The two connecting surfaces are at 45 degrees relative to the horizontal plane.

4. The shock-absorbing upper beam structure according to claim 1, characterized in that: The end of the support beam is provided with a connecting plate which is integrally bent or separately fixed, and the side of the connecting plate facing obliquely downward serves as the connecting surface.

5. The shock-absorbing upper beam structure according to claim 1, characterized in that: The anti-slip rod is a screw rod and is in clearance fit with the connecting hole. A nut and an axial limit pin to prevent the nut from slipping out are installed at the end of the screw rod. Both ends of the anti-slip rod are anti-slip heads restricted by the connecting hole, and the anti-slip heads at both ends are respectively abutted against the car top wheel support frame and the fixing frame through buffer pads.

6. Double-car top wheel car, characterized in that: The utility model comprises an elevator car and a shock-absorbing upper beam structure as claimed in any one of claims 1 to 5 fixed to the top of the elevator car.

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