Safety tongs and elevator
By combining the active lifting mechanism, the driven lifting mechanism, and the linkage mechanism, welding is eliminated, simplifying the structure of the safety clamp. This solves the problems of high manufacturing cost and complexity of existing safety clamps, enabling the manufacture of low-cost, environmentally friendly, and highly safe safety clamps.
Patent Information
- Application Number
- CN202411257710.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2026-03-10
AI Technical Summary
Existing safety clamps have complex structures, high manufacturing costs, high manufacturing and maintenance costs, and complex and environmentally unfriendly welding processes.
It adopts a combination design of active lifting mechanism, driven lifting mechanism and linkage mechanism. It is connected by fasteners, eliminating welding and simplifying the structure. Power is transmitted through linkage mechanism to achieve braking.
It reduces manufacturing costs, simplifies manufacturing and maintenance processes, improves environmental friendliness, enhances safety and adjustability, and reduces assembly difficulty and the probability of parts rework and scrap.
Smart Images
Figure CN121626798A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of elevator equipment, in particular to a safety gear and an elevator. BACKGROUND
[0002] In the elevator equipment, the safety gear is a kind of elevator safety protection device, which can quickly stop the elevator car on the guide rail in the emergency situation that the elevator speed exceeds the set limit or the suspension rope breaks, relaxes and the like, prevents the elevator from further out of control or falling, thereby protecting the safety of passengers and elevator equipment.
[0003] The safety gear commonly used in the market at present is composed of various precision components, and the structure for realizing braking and resetting is complex. Therefore, higher technical requirements and cost investment are required in the manufacturing, installation and subsequent maintenance process of the components. Further, the current safety gear uses too much welding process, has high requirements on related parameters, leads to complex welding process, and has the defects of complex structure and high manufacturing cost. SUMMARY
[0004] Therefore, it is necessary to provide a safety gear and an elevator aiming at the problems of complex structure and high manufacturing cost of the safety gear.
[0005] A safety gear comprises:
[0006] A first mounting frame and a second mounting frame are arranged in opposite intervals;
[0007] An active pulling mechanism comprises a first transmission shaft, an active push plate, an active bracket and a pulling assembly, the first transmission shaft is rotatably mounted on the first mounting frame, the pulling assembly is connected with the first transmission shaft, the active bracket is provided with a first sliding hole, the active bracket is used for mounting a first braking assembly, one end of the active push plate is connected with the first transmission shaft, and the other end of the active push plate is movably arranged in the first sliding hole;
[0008] A driven pulling mechanism comprises a second transmission shaft, a driven push plate and a driven bracket, the second transmission shaft is rotatably mounted on the second mounting frame, one end of the driven push plate is connected with the second transmission shaft, the driven bracket is provided with a second sliding hole, the other end of the driven push plate is movably arranged in the second sliding hole, and the driven bracket is used for mounting a second braking assembly; and
[0009] A connecting rod mechanism movably connects the second transmission shaft with the first transmission shaft.
[0010] In one of the embodiments, the first mounting frame comprises a first top plate, a first bottom plate and two first side plates, the two first side plates are integrally connected with two side edges of the first bottom plate respectively, the first top plate is connected with the two first side plates through first fasteners, the two first side plates are both provided with first through holes, and the first transmission shaft is rotatably arranged in the first through holes; the second mounting frame comprises a second top plate, a second bottom plate and two second side plates, the two second side plates are integrally connected with two side edges of the second bottom plate respectively, two side edges of the second top plate are connected with the two second side plates through second fasteners respectively, the two second side plates are both provided with second through holes, and the second transmission shaft is rotatably arranged in the first through holes.
[0011] In one of the embodiments, the active pulling mechanism further comprises a first adjusting member, the bottom of the active bracket is further provided with a first connecting plate, the first adjusting member is movably mounted on the first connecting plate, and the first adjusting member is used for adjusting the shortest distance between the active bracket and the first bottom plate.
[0012] The driven pulling mechanism further comprises a second adjusting member, the bottom of the driven bracket is further provided with a second connecting plate, the second adjusting member is mounted on the second connecting plate, and the second adjusting member is used for adjusting the shortest distance between the driven bracket and the second bottom plate.
[0013] In one of the embodiments, the active pulling mechanism further comprises a main limiting member, the main limiting member is mounted on one side of the first side plate close to the connecting rod mechanism, and the limiting member is used for limiting the swing range of the connecting rod mechanism.
[0014] In one of the embodiments, the active pulling mechanism further comprises an auxiliary limiting member, the auxiliary limiting member is movably mounted on the bottom of the first sliding hole, one side of the active push plate close to the first connecting plate is provided with a limiting groove, and the auxiliary limiting member abuts against the limiting groove when the active push plate is located at the limit position of swing.
[0015] In one of the embodiments, the first brake assembly comprises two first wedge blocks and two first guide members, the two first wedge blocks are oppositely and spacedly arranged on the active bracket, the two first side plates are both provided with first mounting plates, the first mounting plates are integrally connected with the first side plates, the first guide members are mounted on the first mounting plates, and the first wedge blocks are movably connected with the first guide members.
[0016] The second brake assembly comprises two second wedges and two second guides, the two second wedges are oppositely arranged on the driven bracket, each of the two second side plates is provided with a second mounting plate, the second mounting plate is integrally connected with the second side plate, the second guide is mounted on the second mounting plate, and the second wedge is movably connected with the second guide.
[0017] In one of the embodiments, the active pulling mechanism further comprises two first reset members, the active bracket is provided with two first sliding grooves, the first reset member is movably mounted in the first sliding groove, and the first reset member is connected with the first wedge.
[0018] The driven pulling mechanism further comprises two second reset members, the driven bracket is provided with two second sliding grooves, the second reset member is movably mounted in the second sliding groove, and the second reset member is connected with the second wedge.
[0019] In one of the embodiments, the driven pulling mechanism further comprises a switch support and an action switch, the switch support is mounted on the second side plate, the switch support is arranged on the side close to the driven swing arm, the action switch is mounted on the switch support, and the contact of the action switch is arranged in the swing area of the driven swing arm.
[0020] In one of the embodiments, the connecting rod mechanism comprises an active swing arm, a connecting rod, a driven swing arm, an elastic member and a connecting rod support, the first transmission shaft is movably connected with the second transmission shaft through the active swing arm, the connecting rod and the driven swing arm in sequence, the connecting rod support is mounted on the first mounting frame, the connecting rod support is provided with a mounting hole, the connecting rod is movably arranged through the mounting hole, one end of the elastic member is mounted on the connecting rod, and the other end of the elastic member abuts against the connecting rod support.
[0021] In another aspect, an elevator is also provided, comprising a guide rail, a car and the safety gear of any one of the above embodiments, the safety gear is mounted on the car, and the first wedge and the second wedge of the safety gear are arranged at the position of the guide rail.
[0022] The safety gear and the elevator, the driving pulling mechanism is installed on the first mounting frame, the driven pulling mechanism is installed on the second mounting frame, and the driving pulling mechanism and the driven pulling mechanism are connected through the connecting rod mechanism to transmit power. When the elevator is overspeed, the pulling assembly is pulled upward by the governor pulling rope, so that the first transmission shaft is driven to rotate clockwise, and the driving push plate is driven to rotate clockwise around the first transmission shaft as the rotation center, and the end of the driving push plate drives the driving bracket to move upward through the first sliding hole, and the first brake assembly on the driving bracket is tightly braked to one side rail. Similarly, the second transmission shaft is driven to rotate counterclockwise by the driving arm, the connecting rod and the driven arm, and the driven push plate is driven to rotate counterclockwise around the second transmission shaft as the rotation center, and the end of the driven push plate drives the driven bracket to move upward through the second sliding hole, and the second brake assembly on the driven bracket is tightly braked to the other side rail. The driving pulling mechanism and the driven pulling mechanism of the present application transmit power through the connecting rod mechanism, the overall structure is simple, each component is convenient to manufacture, and the first transmission shaft and the second transmission shaft can be connected with other components through fasteners, so that welding is not needed, the environmental protection of the manufacturing process can be improved, and the structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The structure schematic diagram of the safety gear described in the embodiment of the present application.
[0024] Figure 2 The structure schematic diagram of the first mounting frame of the safety gear described in the embodiment of the present application.
[0025] Figure 3 The structure schematic diagram of the second mounting frame of the safety gear described in the embodiment of the present application.
[0026] Figure 4 The structure exploded schematic diagram of the safety gear described in the embodiment of the present application.
[0027] Figure 5 The working schematic diagram of the safety gear described in the embodiment of the present application.
[0028] Figure 6 The cross-sectional structure schematic diagram of the first mounting frame of the safety gear described in the embodiment of the present application.
[0029] Figure 7 The structure schematic diagram of the driving pulling mechanism of the safety gear described in the embodiment of the present application. Figure 6 The enlarged schematic diagram of A in the middle.
[0030] Figure 8 The enlarged structure schematic diagram of the driven pulling mechanism of the safety gear described in the embodiment of the present application.
[0031] REFERENCE NUMERALS:
[0032] 10, safety tongs; 20, guide rail;
[0033] 100, first mounting frame; 110, first top plate; 120, first bottom plate; 130, first side plate; 131, first mounting plate; 130A, first through hole; 140, first fastener;
[0034] 200, second mounting frame; 210, second top plate; 220, second bottom plate; 230, second side plate; 231, second mounting plate; 230A, second through hole; 240, second fastener;
[0035] 300, active pulling mechanism; 310, first transmission shaft; 320, active push plate; 320A, limiting groove; 330, active bracket; 331, first connecting plate; 330A, first sliding hole; 330B, first sliding groove; 340, first adjusting piece; 350, first return piece; 360, main limiting piece; 370, auxiliary limiting piece; 380, pulling assembly; 381, pulling arm; 382, pulling head;
[0036] 400, driven pulling mechanism; 410, second transmission shaft; 420, driven push plate; 430, driven bracket; 431, second connecting plate; 430A, second sliding hole; 430B, second sliding groove; 440, second adjusting piece; 450, second return piece; 460, switch support; 470, action switch;
[0037] 500, connecting rod mechanism; 510, active swing arm; 520, connecting rod; 530, driven swing arm; 540, connecting rod support; 540A, mounting hole; 550, elastic piece; 560, first limiting buckle; 570, second limiting buckle;
[0038] 600, first brake assembly; 610, first wedge block; 620, first guide piece;
[0039] 710, second wedge block. DETAILED DESCRIPTION
[0040] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that other specific arrangements can be utilized or certain terminologies can be changed without departing from the spirit or scope of the present application.
[0041] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0042] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.
[0043] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0044] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under the second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0045] It is to be noted that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be understood that when a method is referred to as comprising a step of doing something, it can include an equivalent step of doing the same thing. The terms "first", "second", "third", etc. are used herein to describe various elements, regions, layers, sections, etc. and are only used to distinguish one element, region, layer, section, or the like from another element, region, layer, section, or the like. It is to be understood that the terms "first", "second", "third", etc. are not intended to denote a physical order or a particular order of use.
[0046] Referring to Figure 1 and Figure 4 , Figure 1 and Figure 4 Fig. 1 shows a schematic view of a safety pawl 10 according to an embodiment of the present application. The safety pawl 10 according to an embodiment of the present application comprises a first mounting frame 100, a second mounting frame 200, a driving pulling mechanism 300, a driven pulling mechanism 400, and a connecting rod mechanism 500. The first mounting frame 100 and the second mounting frame 200 are arranged in a spaced-apart relationship. The driving pulling mechanism 300 comprises a first transmission shaft 310, a driving push plate 320, a driving bracket 330, and a pulling assembly 380. The first transmission shaft 310 is rotatably mounted to the first mounting frame 100. The pulling assembly 380 is connected to the first transmission shaft 310. The pulling assembly 380 is configured to be connected to a speed limiter pulling rope. The driving bracket 330 is provided with a first sliding hole 330A. The driving bracket 330 is configured to mount a first braking assembly 600. One end of the driving push plate 320 is connected to the first transmission shaft 310. The other end of the driving push plate 320 is movably arranged in the first sliding hole 330A. The driven pulling mechanism 400 comprises a second transmission shaft 410, a driven push plate 420, and a driven bracket 430. The second transmission shaft 410 is rotatably mounted to the second mounting frame 200. The driven bracket 430 is provided with a second sliding hole 430A. The driven bracket 430 is configured to mount a second braking assembly. One end of the driven push plate 420 is connected to the second transmission shaft 410. The other end of the driven push plate 420 is movably arranged in the second sliding hole 430A. The connecting rod mechanism 500 comprises a driving swing arm 510, a connecting rod 520, and a driven swing arm 530. The first transmission shaft 310 is movably connected to the second transmission shaft 410 through the driving swing arm 510, the connecting rod 520, and the driven swing arm 530 in sequence. Specifically, one end of the connecting rod 520 is connected to the driving swing arm 510 through a first limiting buckle 560. The other end of the connecting rod 520 is connected to the driven swing arm 530 through a second limiting buckle 570.
[0047] The safety clamp 10 described in this application embodiment has an active lifting mechanism 300 mounted on a first mounting frame 100, with the active lifting mechanism 300 and the first mounting frame 100 forming the active side of the safety clamp 10. A driven lifting mechanism 400 is mounted on a second mounting frame 200, with the driven lifting mechanism 400 and the second mounting frame 200 forming the driven side of the safety clamp 10. Power is transmitted between the active lifting mechanism 300 and the driven lifting mechanism 400 via a linkage mechanism 500. Specifically, as... Figure 5 As shown, when the elevator overspeeds, the lifting assembly 380 is pulled upward by the speed limiter lifting rope, which causes the lifting assembly 380 to drive the first drive shaft 310 to rotate clockwise, which in turn drives the active push plate 320 to rotate clockwise around the first drive shaft 310 as the rotation center. This causes the sliding end of the active push plate 320 to drive the active bracket 330 to move upward through the first sliding hole 330A. During the upward movement, the first braking assembly 600 on the active bracket 330 will clamp and brake one side of the guide rail 20. Similarly, the second drive shaft 410 rotates counterclockwise under the drive of the active swing arm 510, the connecting rod 520 and the driven swing arm 530, which in turn drives the driven push plate 420 to rotate counterclockwise around the second drive shaft 410 as the rotation center. This causes the sliding end of the driven push plate 420 to drive the driven bracket 430 to move upward through the second sliding hole 430A. During the upward movement, the second braking component on the driven bracket 430 clamps and brakes the guide rail 20 on the other side, thereby stopping the elevator car.
[0048] The safety clamp 10 described in this embodiment transmits power between the active lifting mechanism 300 and the driven lifting mechanism 400 via a linkage mechanism 500. The overall structure is simple, with few and simple components, reducing manufacturing, installation, and maintenance costs. Furthermore, the first drive shaft 310, the second drive shaft 410, and other components can be connected via fasteners, eliminating the need for welding. This optimizes the manufacturing process, increases the adjustability of components during assembly, reduces assembly difficulty, lowers the probability of rework and scrap, and improves the environmental friendliness of the manufacturing process. It boasts advantages such as simple structure and low manufacturing cost.
[0049] In an optional embodiment, the lifting assembly 380 further includes a lifting arm 381 and a lifting head 382. One end of the lifting arm 381 is connected to the first drive shaft 310, and the other end is connected to the lifting head 382, which is used to connect the speed governor lifting rope. Although the speed governor itself is not part of the safety gear 10, it is closely connected to it. The speed governor is responsible for monitoring the elevator's operating speed and, when the elevator exceeds the speed limit, raising the speed governor lifting rope. This causes the speed governor lifting rope to pull the lifting head 382, which in turn drives the lifting arm 381 to rotate, thereby triggering the braking action of the safety gear 10.
[0050] Combination Figure 2 As shown, Figure 2 A schematic diagram of the structure of the first mounting frame 100 of the safety clamp 10 according to an embodiment of this application is shown. In some embodiments, the first mounting frame 100 includes a first top plate 110, a first bottom plate 120, and two first side plates 130. The two first side plates 130 are integrally connected to the two sides of the first bottom plate 120, respectively. The two sides of the first top plate 110 are connected to the two first side plates 130 by first fasteners 140, respectively. Each of the two first side plates 130 is provided with a first through hole 130A, and a first drive shaft 310 is rotatably disposed in the first through hole 130A. Specifically, the first drive shaft 310 is disposed through the first through hole 130A of the two first side plates 130, and the active push plate 320 and the active bracket 330 are disposed in the space between the two first side plates 130. By making the two first side plates 130 and the first bottom plate 120 integrally connected, they can be formed by bending through a stamping process, resulting in high connection strength. The first top plate 110 is connected to the first side plates 130 on both sides by the first fastener 140, so that the entire first mounting frame 100 can be connected without welding, which simplifies the processing technology and improves the environmental friendliness of the processing.
[0051] Furthermore, such as Figure 3 As shown, the second mounting frame 200 includes a second top plate 210, a second bottom plate 220, and two second side plates 230. The two second side plates 230 are integrally connected to the two sides of the second bottom plate 220, respectively. The two sides of the second top plate 210 are connected to the two second side plates 230 via second fasteners 240. Each of the two second side plates 230 has a second through hole 230A, and a second drive shaft 410 is rotatably disposed in the second through hole 230A. Specifically, the second drive shaft 410 passes through the second through hole 230A of the two second side plates 230, and a driven push plate 420 and a driven bracket 430 are disposed in the space between the two second side plates 230. Similarly, the two second side plates 230 and the second bottom plate 220 are also integrally formed by a stamping process, resulting in high connection strength. The second top plate 210 is connected to the second side plates 230 on both sides by the second fastener 240, so that the entire second mounting frame 200 can be connected without welding, which simplifies the processing technology and improves the environmental friendliness of the processing.
[0052] In an optional embodiment, the first drive shaft 310 and the active push plate 320 are connected by a third fastener, and the first drive shaft 310 and the active swing arm 510 are connected by a fourth fastener. Further, the second drive shaft 410 and the driven push plate 420 are connected by a fifth fastener, and the second drive shaft 410 and the driven swing arm 530 are connected by a sixth fastener. By also setting the connections of the first drive shaft 310 and the second drive shaft 410 to other components as fastener connections, a weld-free connection is further achieved, simplifying the manufacturing process of the entire safety clamp 10.
[0053] In an exemplary embodiment, the first fastener 140 and the second fastener 240 are bolts or screws, which connect the first top plate 110 and the first side plate 130, as well as the second top plate 210 and the second side plate 230, ensuring that they achieve the required connection strength. Similarly, the third, fourth, fifth, and sixth fasteners are all bolts or screws, which ensure the connection strength between the first drive shaft 310 and the second drive shaft 410 and other components.
[0054] In an optional embodiment, such as Figure 2 As shown, the first braking assembly 600 includes two first wedges 610 and two first guide members 620. The two first wedges 610 are arranged at a distance from each other on the active bracket 330, and are located on both sides of a guide rail 20. Each of the two first side plates 130 is provided with a first mounting plate 131, which is integrally connected to the first side plate 130. The first guide member 620 is mounted on the first mounting plate 131, and the first wedges 610 are movably connected to the first guide member 620. Specifically, the first mounting plate 131 is positioned facing the other side of the first side plate 130, and the first mounting plate 131 and the first side plate 130 are formed by bending through a stamping process to achieve an integral forming effect. First guide members 620 are respectively provided on the first mounting plates 131 on both sides, and the distance between the first guide members 620 on both sides gradually decreases from bottom to top. Therefore, when the opposing first wedges 610 move upward under the push of the active bracket 330, the opposing first wedges 610 will gradually approach each other under the guidance of the opposing first guide 620 until the two first wedges 610 abut against the guide rail 20, thereby making the safety clamp 10 and the guide rail 20 have a friction braking effect.
[0055] Furthermore, such as Figure 5As shown, the second braking assembly includes two second wedges 710 and two second guide members. The two second wedges 710 are arranged at a distance from each other on the driven bracket 430. Each of the two second side plates 230 is provided with a second mounting plate 231, which is integrally connected to the second side plate 230. The second guide members are mounted on the second mounting plates 231, and the second wedges 710 are movably connected to the second guide members. Specifically, the second mounting plate 231 is positioned facing the other side of the second side plate 230, and the second mounting plate 231 and the second side plate 230 are formed by bending through a stamping process to achieve an integral forming effect. Similarly, the opposing second wedges 710 move upward under the push of the driven bracket 430, and then approach each other under the guidance of the second guide members until they abut against the other guide rail 20, where they work together with the first wedge 610 to achieve a friction braking effect.
[0056] In an optional embodiment, such as Figure 6 and Figure 7 As shown, the active lifting mechanism 300 also includes a first adjusting member 340, and a first connecting plate 331 is provided at the bottom of the active bracket 330. The first adjusting member 340 is movably mounted on the first connecting plate 331 and is used to adjust the shortest distance between the active bracket 330 and the first base plate 120. Specifically, the first connecting plate 331 is an L-shaped plate, with the active bracket 330 connected to the side of the L-shaped plate, and the first adjusting member 340 is located on the bottom surface of the L-shaped plate. The first adjusting member 340 is an adjusting bolt. By adjusting the shortest distance between the active bracket 330 and the first base plate 120 through the first adjusting member 340, the initial position of the first wedge block 610 can be adjusted, thereby realizing the function of adjusting the braking force on the active side, which has the advantage of convenient adjustment.
[0057] Furthermore, such as Figure 8 As shown, the driven lifting mechanism 400 also includes a second adjusting member 440. A second connecting plate 431 is also provided at the bottom of the driven bracket 430. The second adjusting member 440 is installed on the second connecting plate 431 and is used to adjust the shortest distance between the driven bracket 430 and the second base plate 220. Specifically, the second connecting plate 431 is an L-shaped plate, with the driven bracket 430 connected to its side. The second adjusting member 440 is located on the bottom surface of the L-shaped plate. The second adjusting member 440 is an adjusting bolt. By adjusting the shortest distance between the driven bracket 430 and the second base plate 220 using the second adjusting member 440, the initial position of the second wedge 710 can be adjusted, thus achieving the function of adjusting the braking force on the driven side, which has the advantage of convenient adjustment. Moreover, by controlling the consistency of the initial positions of the first wedge 610 and the second wedge 710, the synchronicity of the braking actions on both sides of the safety clamp 10 can be ensured, preventing the dangerous situation of biased braking to one side during braking and improving safety.
[0058] In an optional embodiment, such asFigure 1 and Figure 2 As shown, the active lifting mechanism 300 also includes a main limiting member 360, which is installed on the side of the first side plate 130 near the active swing arm 510. The limiting member is used to limit the swing range of the active swing arm 510. Specifically, the main limiting member 360 is a side plate bolt. By adjusting the extension of the main limiting member 360, when the active swing arm 510 swings to a certain position relative to the first drive shaft 310, it will contact the main limiting member 360. At this time, the active swing arm 510 stops swinging, thereby stopping the first drive shaft 310, the active push plate 320, and the active bracket 330 from moving. The power transmission from the active side to the driven side also stops. Afterward, the first wedge 610 and the second wedge 710 continue to complete the braking action through the friction with the guide rail 20.
[0059] In an optional embodiment, such as Figure 7 As shown, the active lifting mechanism 300 also includes an auxiliary limiting member 370, which is movably mounted on the bottom of the first sliding hole 330A. The active push plate 320 has a limiting groove 320A on its side facing the first connecting plate 331. When the active push plate 320 is at its extreme swing position, the auxiliary limiting member 370 abuts against the limiting groove 320A. Specifically, the auxiliary limiting member 370 is a limiting bolt. When the active push plate 320 is pushed to its extreme position, the auxiliary limiting member 370 will contact the limiting groove 320A, thus providing an auxiliary limiting function.
[0060] It should be noted that the dual limiting configuration of the main limiting member 360 and the auxiliary limiting member 370 provides double limiting protection for the safety clamp 10, thereby enhancing its safety. Furthermore, the main limiting member 360 is independently mounted on the first side plate 130, allowing its contact position to be positioned at the upper end of the active swing arm 510. This results in a short lever arm when the main limiting member 360 contacts the active swing arm 510, reducing the impact force on the main limiting member 360 and thus facilitating the protection of both the main limiting member 360 and the auxiliary limiting member 370.
[0061] In an optional embodiment, such as Figure 4 and Figure 6As shown, the active lifting mechanism 300 also includes two first reset members 350. The active bracket 330 is provided with two first sliding grooves 330B. The first reset members 350 are movably installed in the first sliding grooves 330B. The first reset members 350 are connected to the first wedges 610. The first wedges 610 can move laterally within the first sliding grooves 330B, thereby moving towards the guide rail 20 to complete braking. The driven lifting mechanism 400 also includes two second reset members 450. The driven bracket 430 is provided with two second sliding grooves 430B. The second reset members 450 are movably installed in the second sliding grooves 430B. The second reset members 450 are connected to the second wedges 710. The second wedges 710 can move laterally within the second sliding grooves 430B, thereby moving towards the guide rail 20 to complete braking. Due to the influence of the hoistway environment, sludge and dust may accumulate on the contact surfaces between the guide rail 20 and the first wedge 610 and the second wedge 710. When the car experiences slight shaking during normal operation, the first wedge 610 and the second wedge 710 may also jump upwards, potentially causing the safety brake 10 to malfunction. By setting a first reset member 350 connecting the first wedge 610 and the active bracket 330, and a second reset member 450 connecting the second wedge 710 and the driven bracket 430, when the first wedge 610 and the second wedge 710 malfunction, the first reset member 350 and the second reset member 450, due to the restriction of the active bracket 330 and the driven bracket 430, prevent the first wedge 610 and the second wedge 710 from continuing to jump upwards, thus preventing malfunction and improving the safety of the safety brake 10.
[0062] It should be noted that after the braking action of the first wedge 610 and the second wedge 710, and the car returns to normal after maintenance, the first wedge 610 and the second wedge 710 need to be reset. Due to the influence of sludge and dust, and the static friction generated between the first wedge 610, the second wedge 710 and the guide rail 20, they may not be able to reset by their own weight. At this time, during the reset process of the safety clamp 10, the lifting assembly and the first drive shaft 310 rotate counterclockwise, driving the active push plate 320 to rotate counterclockwise. Its front end pulls the active bracket 330 downward, so that the front end of the active bracket 330 pulls the first reset piece 350, causing the first wedge 610 to fall off due to static friction, thereby resetting the first wedge 610. Similarly, under the transmission of the linkage mechanism 500, the driven lifting mechanism 400 rotates clockwise, driving the second wedge 710 to reset.
[0063] In an optional embodiment, such as Figure 1 and Figure 3As shown, the driven lifting mechanism 400 also includes a switch bracket 460 and an actuation switch 470. The switch bracket 460 is mounted on the second side plate 230 and is located near the driven swing arm 530. The actuation switch 470 is mounted on the switch bracket 460, and its contact is located in the swing area of the driven swing arm 530. The actuation switch 470 is fixed to the second side plate 230 by the switch bracket 460. When the safety brake 10 is engaged, the driven swing arm 530 rotates counterclockwise. At this time, the outer edge of the driven swing arm 530 gradually presses the contact of the actuation switch 470 as it rotates. The actuation switch 470 can promptly provide feedback on the braking action of the safety brake 10 and information about abnormalities in the car, thus improving safety.
[0064] In an optional embodiment, such as Figure 1 and Figure 5 As shown, the linkage mechanism 500 also includes an elastic element 550 and a linkage bracket 540. The linkage bracket 540 is mounted on the first mounting frame 100 and has a mounting hole 540A. The connecting rod 520 is movably inserted through the mounting hole 540A. One end of the elastic element 550 is mounted on the connecting rod 520, and the other end of the elastic element 550 abuts against the linkage bracket 540. Specifically, the elastic element 550 is a compression spring. By setting the elastic element 550 to abut against the linkage bracket 540, it is elastically buffered when the linkage mechanism 500 transmits power, which can provide a certain buffering effect when the safety clamp 10 is activated, reducing the impact and vibration during braking and protecting the safety of the elevator and passengers.
[0065] On the other hand, this application also provides an elevator, including a guide rail 20, a car, and a safety clamp 10 as described in any of the above embodiments. The safety clamp 10 is installed at the top or bottom of the car, and the first wedge 610 and the second wedge 720 of the safety clamp 10 are disposed at the position of the guide rail 20. The elevator described in this embodiment, with its safety clamp 10, has the advantages of simple structure and low manufacturing cost.
[0066] The safety clamp and elevator described in this application have the following beneficial effects:
[0067] 1. The active lifting mechanism 300 and the driven lifting mechanism 400 transmit power through a linkage mechanism 500. The overall structure is simple, with fewer and simpler components, reducing costs associated with manufacturing, installation, and maintenance. Furthermore, the first drive shaft 310, the second drive shaft 410, and other components can be connected via fasteners, eliminating the need for welding. This optimizes the manufacturing process, increases the adjustability of components during assembly, reduces assembly difficulty, lowers the probability of rework and scrap, and improves the environmental friendliness of the manufacturing process. It boasts advantages such as simple structure and low manufacturing cost.
[0068] 2. The dual limit setting of the main limiter 360 and the auxiliary limiter 370 provides double limit protection for the safety brake 10, thereby enhancing its safety. It can also work in conjunction with the action switch 470 to provide timely feedback on the braking action of the safety brake 10 and any abnormalities in the car, further enhancing its safety advantages.
[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are 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.
[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A safety tong comprising: The safety clamp comprises: a first mounting frame (100) and a second mounting frame (200), which are oppositely spaced apart; a driving pulling mechanism (300), which comprises a first transmission shaft (310), a driving push plate (320), a driving bracket (330) and a pulling assembly (380), the first transmission shaft (310) is rotatably mounted on the first mounting frame (100), the pulling assembly (380) is connected with the first transmission shaft (310), the driving bracket (330) is provided with a first sliding hole (330A), the driving bracket (330) is used for mounting a first brake assembly (600), one end of the driving push plate (320) is connected with the first transmission shaft (310), and the other end of the driving push plate (320) is movably arranged in the first sliding hole (330A); a driven pulling mechanism (400), which comprises a second transmission shaft (410), a driven push plate (420) and a driven bracket (430), the second transmission shaft (410) is rotatably mounted on the second mounting frame (200), the driven bracket (430) is provided with a second sliding hole (430A), the driven bracket (430) is used for mounting a second brake assembly, one end of the driven push plate (420) is connected with the second transmission shaft (410), and the other end of the driven push plate (420) is movably arranged in the second sliding hole (430A); and a connecting rod mechanism (500), the first transmission shaft (310) is movably connected with the second transmission shaft (410) through the connecting rod mechanism (500).
2. The safety clamp according to claim 1, wherein: the first mounting frame (100) comprises a first top plate (110), a first bottom plate (120) and two first side plates (130), the two first side plates (130) are integrally connected with two side edges of the first bottom plate (120) respectively, the first top plate (110) is connected with the two first side plates (130) through first fasteners (140), the two first side plates (130) are both provided with first through holes (130A), and the first transmission shaft (310) is rotatably arranged in the first through holes (130A); the second mounting frame (200) comprises a second top plate (210), a second bottom plate (220) and two second side plates (230), the two second side plates (230) are integrally connected with two side edges of the second bottom plate (220) respectively, two side edges of the second top plate (210) are connected with the two second side plates (230) through second fasteners (240) respectively, the two second side plates (230) are both provided with second through holes (230A), and the second transmission shaft (410) is rotatably arranged in the second through holes (230A).
3. The safety clamp according to claim 2, wherein: The active pulling mechanism (300) further comprises a first adjusting member (340), the bottom of the active bracket (330) is further provided with a first connecting plate (331), and the first adjusting member (340) is movably mounted on the first connecting plate (331); the first adjusting member (340) is used for adjusting the shortest distance between the active bracket (330) and the first bottom plate (120). The driven pulling mechanism (400) further comprises a second adjusting member (440), the bottom of the driven bracket (430) is further provided with a second connecting plate (431), and the second adjusting member (440) is mounted on the second connecting plate (431); the second adjusting member (440) is used for adjusting the shortest distance between the driven bracket (430) and the second bottom plate (220).
4. The safety clamp according to claim 2, wherein: The active pulling mechanism (300) further comprises a main limiting member (360), the main limiting member (360) is mounted on one side of the first side plate (130) close to the connecting rod mechanism (500), and the limiting member is used for limiting the swing range of the connecting rod mechanism (500).
5. The safety clamp according to claim 3, wherein: The active pulling mechanism (300) further comprises an auxiliary limiting member (370), the auxiliary limiting member (370) is movably mounted on the bottom of the first sliding hole (330A), one side of the active push plate (320) close to the first connecting plate (331) is provided with a limiting groove (320A), and when the active push plate (320) is located at the limit position of swing, the auxiliary limiting member (370) abuts against the limiting groove (320A).
6. The safety clamp according to claim 2, wherein: The first brake assembly (600) comprises two first wedge blocks (610) and two first guide members (620), the two first wedge blocks (610) are oppositely and spacedly arranged on the active bracket (330), the two first side plates (130) are each provided with a first mounting plate (131), the first mounting plate (131) is integrally connected with the first side plate (130), the first guide member (620) is mounted on the first mounting plate (131), and the first wedge block (610) is movably connected with the first guide member (620). The second brake assembly comprises two second wedge blocks (710) and two second guide members, the two second wedge blocks (710) are oppositely and spacedly arranged on the driven bracket (430), the two second side plates (230) are each provided with a second mounting plate (231), the second mounting plate (231) is integrally connected with the second side plate (230), the second guide member is mounted on the second mounting plate (231), and the second wedge block (710) is movably connected with the second guide member.
7. The safety clamp according to claim 6, wherein: The active pulling mechanism (300) further comprises two first reset members (350), the active bracket (330) is provided with two first sliding grooves (330B), the first reset members (350) are movably installed in the first sliding grooves (330B), and the first reset members (350) are connected with the first wedge blocks (610). The driven pulling mechanism (400) further comprises two second reset members (450), the driven bracket (430) is provided with two second sliding grooves (430B), the second reset members (450) are movably installed in the second sliding grooves (430B), and the second reset members (450) are connected with the second wedge blocks (710).
8. The safety gear according to any one of claims 2-7, characterized in that: The connecting rod mechanism (500) comprises an active swing arm (510), a connecting rod (520), a driven swing arm (530), an elastic member (550) and a connecting rod support (540), the first transmission shaft (310) movably connects the second transmission shaft (410) through the active swing arm (510), the connecting rod (520) and the driven swing arm (530) in sequence, the connecting rod support (540) is installed on the first mounting frame (100), the connecting rod support (540) is provided with a mounting hole (540A), the connecting rod (520) is movably arranged through the mounting hole (540A), one end of the elastic member (550) is installed on the connecting rod (520), and the other end of the elastic member (550) abuts against the connecting rod support (540).
9. The safety gear according to claim 8, characterized in that: The driven pulling mechanism (400) further comprises a switch support (460) and an action switch (470), the switch support (460) is installed on the second side plate (230), the switch support (460) is arranged on the side close to the driven swing arm (530), the action switch (470) is installed on the switch support (460), and the contact of the action switch (470) is arranged in the swing area of the driven swing arm (530).
10. An elevator, characterized in that: comprising a guide rail (20), a car and the safety gear (10) according to any one of claims 1-9, the safety gear (10) is installed on the car, and the first wedge block (610) and the second wedge block (720) of the safety gear (10) are arranged at the position of the guide rail (20).