Linkage safety tongs device and four-guide-rail type passenger elevator and goods elevator with linkage safety tongs device
Through the design of the transmission linkage and transmission shaft of the linkage safety clamp device, the side deviation problem of traditional elevator safety clamps when the center of gravity of the car is deviated, and the stability and safety of the car is achieved when the brake stops, which is suitable for large volumes elevator.
Patent Information
- Application Number
- CN202420814834.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-18
AI Technical Summary
When the center of gravity of the car deviates from the center of the center of gravity, the car will be offset and tilted, and the braking will not be effectively synchronized, which increases the risk of damage to the elevator shaft and guide rails.
A linked safety clamp device is designed to achieve synchronous work of the front and rear safety clamps through the transmission link and the transmission shaft to ensure that the car does not deviate sideways when brake stops. The transmission link is used to link the front and rear safety clamps on both sides of the transmission link to the transmission shaft. Link the safety clamps on both sides of the left and right to ensure that all safety clamps are braked at the same time.
It effectively avoids the side deviation of the car during the brake stop, improves the safety of the elevator, and is especially suitable for large-sized passenger elevators and freight elevators, ensuring the smooth brake stop of the car when the center of gravity deviates.
Smart Images
Figure CN222181472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevators, in particular to a linkage safety clamp device and a four-guide rail passenger elevator and a freight elevator having the same. Background Art
[0002] Elevators are used to carry passengers or goods up and down. Elevators need safety clamps as safety protection devices. When the elevator speed exceeds the speed limit set by the elevator speed limiter, or when the suspension rope breaks and loosens, the car will be stopped urgently and the guide rails of the elevator shaft will be clamped to achieve the brake stop of the elevator. However, it is found in practice that the center of gravity may deviate from the center of the car during the elevator transportation process. Since the traditional single set of safety clamps is concentrated in the middle of the car, when the center of gravity of the cargo deviates greatly from the center of the car, the car will be offset or even deformed. When the forklift enters the elevator, since the guide rails of the single set of safety clamps are far from the door, the cargo will have a greater impact on the guide rails and the car when entering, and long-term use will cause problems such as car tilting. In this case, once the elevator has an accident and needs to brake with the safety clamp, it will cause the car to deviate to the side and collide with the guide rail or the elevator shaft to cause damage. If a design with multiple sets of safety clamps distributed around the car is adopted for the above situation, there is still a problem of the center of gravity deviating from the center of the car, resulting in the inability of the safety clamps at various locations of the elevator to cooperate with the brake at the same time, and there is still a hidden danger of the car deviating to the side. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a linkage safety clamp device and a four-track passenger elevator and freight elevator having the same.
[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: a linkage safety clamp device is provided, comprising a car top beam located on a car, an elevator shaft guide rail is arranged next to the car; the car top beam comprises side beams arranged on left and right sides and a middle beam located in the middle, safety clamps are respectively arranged on the front and rear sides of the side beams, and the safety clamps are used to clamp the elevator shaft guide rails for braking; a transmission connecting rod is arranged between the safety clamps on the front and rear sides of the side beams, and the transmission connecting rod is used to control the safety clamps on the front and rear sides to work synchronously; a transmission shaft is arranged on the middle beam, and the transmission shaft is located at the front or rear side of the middle beam, and both ends of the transmission shaft are connected to the safety clamps on the left and right sides, and the transmission shaft is used to control the safety clamps on the left and right sides to work synchronously.
[0005] According to the linkage safety clamp device provided by the utility model, by adopting the transmission connecting rod to link the safety clamps on the front and rear sides, and the transmission shaft to link the safety clamps on the left and right sides, at least the following technical effects are achieved: once an abnormality occurs in the lifting process of the car, only one of the safety clamps needs to be triggered to work, and the remaining safety clamps can be controlled to work synchronously through the transmission connecting rod and the transmission shaft, ensuring that the car will not deviate to the side during the braking process, thereby improving the safety of the elevator.
[0006] As some preferred embodiments of the utility model, a lifting lever is provided on the safety clamp, and the lifting lever is connected to the side beam through an intermediate rotating shaft, and the two ends of the lifting lever serve as the first end of the lifting lever and the second end of the lifting lever respectively, the first end of the lifting lever is connected to the transmission connecting rod through a rotating shaft, the second end of the lifting lever is connected to a lifting rod through a rotating shaft, and the lifting rod is connected to the safety clamp.
[0007] As some preferred embodiments of the utility model, a reset plate is provided on the side beam, the reset plate has a through hole, the transmission connecting rod passes through the through hole of the reset plate, and a connecting rod spring is provided between the transmission connecting rod and the reset plate.
[0008] As some preferred embodiments of the utility model, an adjusting nut is provided on the transmission connecting rod, and the connecting rod spring supports the adjusting nut.
[0009] As some preferred embodiments of the utility model, the safety clamp includes a limit fixing block and a lifting wedge block, the limit fixing block is connected to the side beam, the lifting wedge block is located between the limit fixing block and the elevator shaft guide rail, the lifting wedge block is connected to the transmission connecting rod, and a guide slope is arranged between the limit fixing block and the lifting wedge block, the guide slope extends from the lower side of the limit fixing block to the upper side of the elevator shaft guide rail, and the guide slope is used to guide the lifting wedge block to clamp the elevator shaft guide rail during the ascending process.
[0010] As some preferred embodiments of the present utility model, a center beam bearing is arranged between the center beam and the transmission shaft.
[0011] As some preferred embodiments of the utility model, the transmission shaft includes an intermediate transmission shaft in the middle position and side transmission shafts at left and right side positions, the intermediate transmission shaft is connected to the safety clamp via the side transmission shaft, and the intermediate transmission shaft is connected to the side transmission shaft via a universal coupling.
[0012] As some preferred embodiments of the utility model, an axle support plate is provided on the car, and an axle support plate bearing is provided between the axle support plate and the side transmission shaft.
[0013] A four-track passenger elevator according to a second aspect of the present utility model includes the above-mentioned linkage safety clamp device.
[0014] A four-track freight elevator according to the third aspect of the present utility model includes the above-mentioned linkage safety clamp device.
[0015] The beneficial effects of the utility model are:
[0016] 1. The safety clamps on the front and rear sides of the elevator are linked by a transmission connecting rod, and the safety clamps on the left and right sides are linked by a transmission shaft. Once an abnormality occurs during the lifting process of the car, only one of the safety clamps needs to be triggered to work, and the remaining safety clamps can be controlled to work synchronously through the transmission connecting rod and the transmission shaft to ensure that the car will not deviate sideways during the braking process, thereby improving the safety of the elevator;
[0017] 2. The new design is particularly suitable for large-volume four-track passenger and freight elevators, especially when a large amount of cargo needs to be transported, causing the center of gravity of the elevator to deviate from the center of the elevator, and also ensures the stability of the elevator during the braking process;
[0018] 3. The newly designed structure is simple and easy to use, and can be matched with different safety clamps and elevators, which is conducive to the promotion and application of technology.
[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0021] Figure 1 It is a top view of the linkage safety clamp device of the utility model;
[0022] Figure 2 It is a left side view of the utility model linkage safety clamp device;
[0023] Figure 3 This is the front view of the utility model linkage safety clamp device;
[0024] Figure 4 It is a partial enlarged view of the utility model at the position of the lifting rod;
[0025] Figure 5 It is a partial enlarged view of the utility model at the connecting rod spring position;
[0026] Figure 6 It is a partial enlarged view of the utility model at the transmission connecting rod position;
[0027] Figure 7It is a working schematic diagram of the safety clamp in the utility model.
[0028] Reference numerals:
[0029] Elevator shaft guide rail 100; side beam 200, relay switch 210; center beam 300; safety clamp 400, lifting lever 410, first end 411 of lifting lever, second end 412 of lifting lever, lifting rod 420, limiting fixing block 430, lifting wedge block 440, wedge block connecting strip 441, guide inclined surface 450; transmission connecting rod 500, reset plate 510, connecting rod spring 520, adjusting nut 530; transmission shaft 600, intermediate transmission shaft 610, center beam bearing 611, universal coupling 612, side transmission shaft 620, shaft support plate 621, shaft support plate bearing 622. DETAILED DESCRIPTION
[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0032] In the description of the present utility model, the meaning of "a plurality" is more than two, and "greater than", "less than", "exceed" etc. are understood to exclude the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0034] Figure 1 It is a top view of an embodiment of the utility model, referring to Figure 1One embodiment of the utility model provides a linkage safety clamp device, which is responsible for the emergency braking of the car. When the elevator speed exceeds the speed set by the elevator speed limiter, or when the suspension rope breaks and relaxes, the car is urgently stopped.
[0035] Furthermore, the linkage safety clamp device of the utility model includes a car top beam located on the car, and an elevator shaft guide rail 100 is arranged next to the car. The elevator shaft guide rail 100 is installed on the elevator shaft to guide the lifting of the car.
[0036] Further, refer to Figure 1 , Figure 3 The car top beam includes side beams 200 on the left and right sides and a middle beam 300 in the middle. Safety clamps 400 are respectively arranged on the front and rear sides of the side beams 200. The safety clamps 400 are used to clamp the elevator shaft guide rails 100 for braking. That is, the car is equipped with four safety clamps 400, which are respectively located at the front left side, the front right side, the rear left side, and the rear right side, and work together to complete the emergency braking of the car.
[0037] Further, refer to Figure 1 , Figure 2 A transmission link 500 is provided between the safety clamps 400 on the front and rear sides of the side beam 200, and the transmission link 500 is used to control the safety clamps 400 on the front and rear sides to work synchronously. The specific structure and working principle of the safety clamp 400 can refer to other safety clamp devices in the prior art, and the transmission link 500 controls the safety clamp 400 to work according to the actual structural characteristics of the safety clamp 400.
[0038] Further, refer to Figure 1 , Figure 3 A transmission shaft 600 is provided on the middle beam 300, and the transmission shaft 600 is located at the front side or rear side of the middle beam 300. Both ends of the transmission shaft 600 are connected to the safety clamps 400 on the left and right sides. The transmission shaft 600 is used to control the safety clamps 400 on the left and right sides to work synchronously.
[0039] In actual operation, when the elevator car is abnormally lifted, as long as at least one of the safety clamps 400 is triggered to brake, for example, assuming that the front left safety clamp 400 is working, the front left safety clamp 400 is linked with the rear left safety clamp 400 through the transmission connecting rod 500, and the front left safety clamp 400 is linked with the front right safety clamp 400 through the transmission shaft 600, and then linked with the rear right safety clamp 400 through the transmission connecting rod 500. In this way, four safety clamps 400 are controlled at the same time, and the safety clamps 400 perform braking work synchronously, ensuring that the elevator car is stable enough and will not deviate during the braking process, so that the elevator car can be stopped smoothly.
[0040] The safety clamps 400 on the front and rear sides of the side beam 200 are in opposite directions, so the safety clamps 400 on the front and rear sides of the side beam 200 are linked and connected through the transmission link 500, which can more easily pull the safety clamps 400 on the front and rear sides to work synchronously.
[0041] The safety clamps 400 on the left and right sides face the same direction. For example, the safety clamps 400 on the front side face the elevator shaft guide rail 100 on the front side, and the safety clamps 400 on the rear side face the elevator shaft guide rail 100 on the rear side. Therefore, the safety clamps 400 on the left and right sides are rotated and transmitted through the transmission shaft 600, which can more easily pull the safety clamps 400 on the left and right sides to work synchronously.
[0042] In some embodiments, the linked safety clamp device of the utility model cooperates with the speed limiter, and one of the safety clamps 400 is linked with the wire rope of the speed limiter. Once the speed limiter is triggered by an abnormality in the lifting process of the car, the speed limiter is linked with the safety clamp 400 to which it is connected, and is linked with the other three safety clamps 400, and usually performs braking work.
[0043] Some embodiments, see Figure 2 The safety clamp 400 is provided with a lifting lever 410, which is connected to the side beam 200 through an intermediate rotating shaft 413, so that the lifting lever 410 can rotate and swing. The two ends of the lifting lever 410 are respectively used as a first end 411 of the lifting lever and a second end 412 of the lifting lever. The first end 411 of the lifting lever is connected to the transmission connecting rod 500 through a rotating shaft, and the second end 412 of the lifting lever is connected to a lifting rod 420 through a rotating shaft, and the lifting rod 420 is connected to the safety clamp 400. In this way, the lifting lever 410 can be pulled by the transmission connecting rod 500 to swing, and the lifting rod 420 can be controlled to rise and fall, thereby controlling the safety clamp 400 to work.
[0044] In this embodiment, optionally, the cross-section of the lifting lever 410 is an "L"-shaped structure, and an angle is formed between the center of the rotating axis of the first end 411 of the lifting lever 410 and the extension line of the center of the middle rotating axis 413, and the center of the rotating axis of the second end 412 of the lifting lever and the extension line of the center of the middle rotating axis 413.
[0045] In this embodiment, the first ends 411 of the lifting levers 410 on the front and rear sides are staggered in the vertical direction, for example, the first end 411 of the lifting lever 410 on the front side faces upward, while the first end 411 of the lifting lever 410 on the rear side faces downward. In this way, the transmission connecting rod 500 only needs to move in one direction, either to the front or the rear, to control the lifting levers 410 on the front and rear sides to rise and fall synchronously, thereby synchronously controlling the safety clamp 400 to work.
[0046] In this embodiment, optionally, the up-down directions of the first ends 411 of the lifting levers 410 on the front and rear sides are in the same direction, and the transmission link 500 adopts an elastic telescopic rod structure. For example, if the first end 411 of the lifting lever 410 on the front side faces upward, then the first end 411 of the lifting lever 410 on the rear side faces upward. In this way, the transmission link 500 only needs to move in one direction, either to the front or the rear, and the transmission link 500 can rise and fall synchronously by utilizing the characteristics of its elastic telescopic rod structure, thereby controlling the synchronous rise and fall of the lifting levers 410 on the front and rear sides, and further synchronously controlling the operation of the safety clamp 400.
[0047] Some embodiments, see Figure 2 , Figure 5 A reset plate 510 is provided on the side beam 200. The reset plate 510 has a through hole. The transmission link 500 passes through the through hole of the reset plate 510. A link spring 520 is provided between the transmission link 500 and the reset plate 510. In this way, the link spring 520 applies a spring force to the transmission link 500 and the reset plate 510, which is equivalent to applying a thrust force to the transmission link 500 as a reset force, which is used to control the reset of the transmission link 500 and prevent the transmission link 500 from accidentally triggering the safety clamp 400.
[0048] In this embodiment, optionally, an adjusting nut 530 is provided on the transmission connecting rod 500, and the connecting rod spring 520 resists the adjusting nut 530. In this way, the spring force of the connecting rod spring 520 can be controlled by rotating the adjusting nut 530 to fine-tune the position.
[0049] In some embodiments, a reset torsion spring is provided on the intermediate rotating shaft of the lifting lever 410 , and the reset torsion spring applies a thrust to the lifting lever 410 and the side beam 200 , serving as a reset force of the lifting lever 410 , and is used to control the reset of the transmission link 500 and prevent the transmission link 500 from accidentally triggering the safety clamp 400 .
[0050] Some embodiments, see Figure 3 , Figure 4 The safety clamp 400 includes a limiting fixed block 430 and a lifting wedge block 440. The limiting fixed block 430 is connected to the side beam 200, that is, the limiting fixed block 430 and the side beam 200 are relatively fixed. The lifting wedge block 440 is located between the limiting fixed block 430 and the elevator shaft guide rail 100. The lifting wedge block 440 is connected to the transmission connecting rod 500, that is, the transmission connecting rod 500 can pull the lifting wedge block 440 to move. A guide slope 450 is provided between the limiting fixed block 430 and the lifting wedge block 440, and the guide slope 450 extends from the lower side of the limiting fixed block 430 to the upper side of the elevator shaft guide rail 100. Refer to Figure 7When the lifting wedge block 440 is rising, due to the action of the guiding inclined surface 450, the lifting wedge block 440 moves toward the elevator shaft guide rail 100 while rising, that is, the guiding inclined surface 450 is used to guide the lifting wedge block 440 to clamp the elevator shaft guide rail 100 during the rising process to complete the braking work.
[0051] In this embodiment, optionally, refer to Figure 3 , Figure 4 , Figure 7 The limiting fixed block 430 and the lifting wedge block 440 are divided into two pairs and arranged on the left and right sides of the side beam 200. The directions of the guiding slopes 450 on both sides of the side beam 200 are equivalent to the extension line of the side beam 200 and are mirror-symmetrical, that is, the guiding slope 450 on the left side of the side beam 200 extends from the lower left to the upper right, and the guiding slope 450 on the right side of the side beam 200 extends from the lower right to the upper left.
[0052] In this embodiment, optionally, the lifting wedge block 440 can be replaced by a roller structure.
[0053] In this embodiment, optionally, the lifting wedge block 440 is connected to the lifting lever 410 via a wedge block connecting strip 441 .
[0054] Some embodiments, see Figure 1 A relay switch 210 is provided on the side beam 200. When the elevator is in an abnormal speed state, the overspeed trigger relay switch 210 controls the protection relay to operate and cut off the elevator safety circuit.
[0055] Some embodiments, see Figure 3 A center beam bearing 611 is provided between the center beam 300 and the transmission shaft 600 to ensure that the rotation process of the transmission shaft 600 is more stable, which is particularly suitable for the case where the car is larger and the transmission shaft 600 is longer.
[0056] Some embodiments, see Figure 3 , Figure 6 The transmission shaft 600 includes an intermediate transmission shaft 610 in the middle position and side transmission shafts 620 at the left and right sides. The intermediate transmission shaft 610 is connected to the safety clamp 400 via the side transmission shaft 620. The intermediate transmission shaft 610 and the side transmission shaft 620 are connected via a universal coupling 612. The universal coupling 612 allows fine-tuning space between the intermediate transmission shaft 610 and the side transmission shaft 620 during rotation, thereby ensuring smooth rotation and transmission of the transmission shaft 600.
[0057] In some embodiments, a shaft support plate 621 is provided on the car, and a shaft support plate bearing 622 is provided between the shaft support plate 621 and the side transmission shaft 620 to support the side transmission shaft 620 so that the rotation process of the side transmission shaft 620 is smoother.
[0058] Some embodiments provide a four-track passenger elevator, comprising the above-mentioned linkage safety clamp device, that is, the linkage safety clamp device of the utility model is suitable for use in passenger elevators, especially when people and goods are transported together, and safety can be ensured.
[0059] Some embodiments, a four-rail freight elevator, includes the above-mentioned linkage safety clamp device, that is, the linkage safety clamp device of the utility model is suitable for use in freight elevators, especially it can ensure safety when carrying heavy weight goods.
[0060] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A linkage safety clamp device, comprising a car top beam located on a car, an elevator shaft guide rail (100) being arranged next to the car, characterized in that: The car top beam comprises side beams (200) arranged on the left and right sides and a middle beam (300) located in the middle, and safety clamps (400) are respectively arranged on the front and rear sides of the side beams (200), and the safety clamps (400) are used to clamp the elevator shaft guide rail (100) to perform a braking operation; A transmission connecting rod (500) is provided between the safety clamps (400) at the front and rear sides of the side beam (200); A transmission shaft (600) is provided on the middle beam (300), the transmission shaft (600) is located at the front side or the rear side of the middle beam (300), and both ends of the transmission shaft (600) are connected to the safety clamps (400) on the left and right sides.
2. A linkage safety clamp device according to claim 1, characterized in that: The safety clamp (400) is provided with a lifting lever (410), and the lifting lever (410) is connected to the side beam (200) via an intermediate rotating shaft (413). The two ends of the lifting lever (410) serve as a first end (411) of the lifting lever and a second end (412) of the lifting lever, respectively. The first end (411) of the lifting lever is connected to the transmission connecting rod (500) via a rotating shaft, and the second end (412) of the lifting lever is connected to a lifting rod (420) via a rotating shaft, and the lifting rod (420) is connected to the safety clamp (400).
3. A linkage safety clamp device according to claim 1, characterized in that: A reset plate (510) is arranged on the side beam (200), the reset plate (510) has a through hole, the transmission connecting rod (500) passes through the through hole of the reset plate (510), and a connecting rod spring (520) is arranged between the transmission connecting rod (500) and the reset plate (510).
4. A linkage safety clamp device according to claim 3, characterized in that: The transmission connecting rod (500) is provided with an adjusting nut (530), and the connecting rod spring (520) supports the adjusting nut (530).
5. A linkage safety clamp device according to claim 1, characterized in that: The safety clamp (400) includes a limit fixing block (430) and a lifting wedge block (440), wherein the limit fixing block (430) is connected to the side beam (200), and the lifting wedge block (440) is located between the limit fixing block (430) and the elevator shaft guide rail (100), and the lifting wedge block (440) is connected to the transmission connecting rod (500). A guide slope (450) is provided between the limit fixing block (430) and the lifting wedge block (440), and the guide slope (450) extends from the lower side of the limit fixing block (430) to the upper side of the elevator shaft guide rail (100), and the guide slope (450) is used to guide the lifting wedge block (440) to clamp the elevator shaft guide rail (100) during the ascending process.
6. A linkage safety clamp device according to claim 1, characterized in that: A center beam bearing (611) is provided between the center beam (300) and the transmission shaft (600).
7. A linkage safety clamp device according to claim 1, characterized in that: The transmission shaft (600) comprises an intermediate transmission shaft (610) at a middle position and side transmission shafts (620) at left and right side positions; the intermediate transmission shaft (610) and the safety clamp (400) are connected via the side transmission shafts (620); and the intermediate transmission shaft (610) and the side transmission shafts (620) are connected via a universal coupling (612).
8. A linkage safety clamp device according to claim 7, characterized in that: The car is provided with an axle support plate (621), and an axle support plate bearing (622) is provided between the axle support plate (621) and the side transmission shaft (620).
9. A four-track passenger elevator, characterized in that: It comprises a linked safety clamp device according to any one of claims 1 to 8.
10. A four-track freight elevator, characterized in that: It comprises a linked safety clamp device according to any one of claims 1 to 8.