Self-adaptive floating mechanism for safety tongs

Abstract

The invention discloses a safety tongs self-adaptive floating mechanism which comprises a floating mechanism body, a mechanism fixing frame and a floating shaft, safety tongs are fixed to one side of the floating mechanism body, a mechanism guide wheel module is fixed to one side of the floating mechanism body, and corresponding through holes are formed in the mechanism fixing frame and the floating mechanism body. An oil-free lining is fixed in a through hole in the mechanism fixing frame, the two ends of the floating shaft are connected to the floating mechanism body and the mechanism fixing frame in a penetrating mode through the through hole and locked on the mechanism fixing frame through nuts, and a floating reset spring is arranged at one end of the floating shaft. The self-adaptive floating mechanism for the safety tongs is advanced in design, compact in structure and reliable in operation, the safety tongs can guide the T-shaped guide rail and float left and right according to the inclination direction of the T-shaped guide rail, the mounting precision requirement and the machining requirement of the T-shaped guide rail are greatly reduced, and then the mounting labor cost and the manufacturing cost are greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator safety clamps, and in particular relates to an adaptive floating mechanism of a safety clamp. Background Art

[0002] The elevator safety clamp is a key safety device to prevent the car from falling accidentally. The elevator safety clamp is generally installed at the bottom of the elevator car. The elevator safety clamp consists of a lifting mechanism and a braking mechanism. The lifting mechanism is used to transfer the mechanical action of the speed limiter to the braking mechanism and activate the braking mechanism. After the braking mechanism is activated, the wedge block inside it will clamp the elevator on the guide rail to prevent the elevator from falling further. The triggering of the elevator safety clamp is mainly related to overspeeding. When the elevator's downward speed exceeds 115%-140% of the rated speed, the speed limiter will trigger the safety clamp through mechanical linkage, clamping the guide rail to force the car to stop.

[0003] However, when the guide rail is deformed, that is, when the upper and lower ends of the guide rail are tilted more than 3mm (the longer the guide rail, the greater the error), it may interfere with the running trajectory of the car and trigger the safety clamp by mistake, causing the entire car to be directly stuck on the guide rail by the safety clamp during operation. The safety clamp in the prior art only relies on the slotted long hole of the safety clamp back plate for adjustment and floating, and the floating space is very limited. Secondly, the fixing bolts of the safety clamp cannot be tightened, otherwise the floating adjustment cannot be performed. If the safety clamp cannot float, the installation accuracy of the corresponding guide rail must be very high, and high installation accuracy will result in high labor costs and manufacturing costs. Therefore, it is urgent to design a safety clamp adaptive floating mechanism to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a safety clamp adaptive floating mechanism to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a safety clamp adaptive floating mechanism, comprising:

[0006] A floating mechanism body, a safety clamp is fixed on one side of the floating mechanism body, and a mechanism guide wheel module is fixed on both upper and lower ends of one side of the floating mechanism body;

[0007] A mechanism fixing frame, the mechanism fixing frame is arranged on two corresponding sides of the floating mechanism main body, the mechanism fixing frame and the floating mechanism main body are provided with corresponding through holes, and oil-free bushings are fixed in the through holes on the mechanism fixing frame;

[0008] A floating shaft, both ends of which are connected to the floating mechanism body and the mechanism fixing frame through through holes, and are locked on the mechanism fixing frame through nuts. One end of the floating shaft is provided with a floating return spring, and the floating return spring is arranged between the mechanism fixing frame and the oil-free bushing.

[0009] Furthermore, a strip opening is provided on one side of the floating mechanism body, and the floating mechanism body is fixedly connected to the safety clamp by means of a hexagon socket screw.

[0010] Furthermore, a floating adjustment bolt is provided on the mechanism fixing frame, and one end of the floating adjustment bolt passes through the mechanism fixing frame and abuts against the floating mechanism body.

[0011] Furthermore, there are two floating shafts in total, and both of the two floating shafts are stepped shafts.

[0012] Furthermore, a safety clamp adjustment bolt is provided on the floating mechanism body, and one end of the safety clamp adjustment bolt passes through the floating mechanism body and abuts against the hexagon socket screw.

[0013] Furthermore, the mechanism guide wheel module includes a fixed base and a guide wheel, the fixed base is fixedly connected to the floating mechanism body, the guide wheel is rotatably connected to the fixed base, and there are four mechanism guide wheel modules in total. The four mechanism guide wheel modules are symmetrically arranged in groups of two, and the corresponding two guide wheels are respectively fitted with the two side surfaces of the T-shaped guide rail.

[0014] Furthermore, there are two floating return springs, and the two floating return springs are arranged at the same end of the two floating shafts.

[0015] Technical effects and advantages of the present invention:

[0016] (1) The safety clamp’s adaptive floating mechanism has an advanced design, compact structure, and reliable operation. By setting up a mechanism guide wheel module, the safety clamp can use the T-shaped guide rail as a guide and float left and right according to the inclination direction of the T-shaped guide rail. Even if the entire T-shaped guide rail inclines by more than 10 mm, the safety clamp will not be triggered by mistake, which greatly reduces the installation accuracy and processing requirements of the T-shaped guide rail, thereby significantly reducing the installation labor cost and manufacturing cost;

[0017] (2) By setting a floating reset spring, the main body of the floating mechanism can be reset as a whole. The entire mechanism is composed entirely of mechanical components, with a simple and clear structure and simple function realization conditions, which increases the reliability of the mechanism and eliminates the need to worry about the safety and anti-fall failure of the overall equipment during power outages;

[0018] (3) The entire mechanism is relatively regular and can adapt to a variety of common safety clamps on the market, and has a high degree of modularity;

[0019] (4) The installation and debugging are simple. The debugging can be completed by simply adjusting the bolt depth, which reduces the difficulty of debugging the anti-fall safety clamp for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 It is a rear view of the present invention;

[0023] Figure 4 It is a right side view of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the main body of the floating mechanism of the present invention.

[0025] In the figure: 100, floating mechanism main body; 101, safety clamp; 102, mechanism fixing frame; 103, floating shaft; 104, floating adjustment bolt; 105, safety clamp adjustment bolt; 106, mechanism guide wheel module; 107, floating return spring; 108, oil-free bushing. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention provides Figure 1-5 A safety clamp adaptive floating mechanism as shown in , comprising:

[0030] A floating mechanism body 100, a safety clamp 101 is fixed on one side of the floating mechanism body 100, and the model of the safety clamp 101 is the LSG01 optimized type. As a prior art, its detailed structure and working principle are not described here. A mechanism guide wheel module 106 is fixed on both upper and lower ends of one side of the floating mechanism body 100, which enables the entire safety clamp 101 to be guided by a T-shaped track (not shown in the figure) and to be floated left and right according to the inclination direction of the T-shaped track.

[0031] The mechanism fixing frame 102 is arranged on the corresponding two sides of the floating mechanism main body 100. The mechanism fixing frame 102 and the floating mechanism main body 100 are provided with corresponding through holes. The through holes on the mechanism fixing frame 102 are fixed with oil-free bushings 108. The mechanism fixing frame 102 is fixed on the carrier (not shown in the figure) by bolts;

[0032] Floating shaft 103, both ends of the floating shaft 103 are connected to the floating mechanism body 100 and the mechanism fixing frame 102 through through holes, and are locked on the mechanism fixing frame 102 by nuts. One end of the floating shaft 103 is provided with a floating return spring 107, and the floating return spring 107 is arranged between the mechanism fixing frame 102 and the oil-free bushing 108. When the entire carrier moves up and down, if the T-shaped track is not straight enough and has a large inclination up and down, the mechanism guide wheel module 106 close to the T-shaped track will give the floating mechanism body 100 a lateral force, causing it to move left and right. When the carrier runs over this inclined T-shaped track, the floating return spring 107 will bounce the entire floating mechanism body 100 back to its original position to achieve the reset function.

[0033] For example, see Figure 1 and Figure 5 As shown, a strip opening is provided on one side of the floating mechanism body 100 , and the floating mechanism body 100 is fixedly connected to the safety gear 101 by means of hexagon socket screws.

[0034] In this technical solution, the strip opening on the floating mechanism main body 100 is arranged in the horizontal direction, and the safety clamp 101 is provided with a threaded hole matching the hexagon socket screw, and four hexagon socket screws and four strip openings are provided. The four hexagon socket screws pass through the four strip openings respectively and are threadedly connected with the corresponding threaded holes respectively. At this time, there is still some distance between the hexagon socket screw and the two ends of the strip opening through which it passes, so it is convenient to fine-tune the position of the hexagon socket screw.

[0035] For example, see Figure 1-Figure 3 As shown, a floating adjustment bolt 104 is disposed on the mechanism fixing frame 102 , and one end of the floating adjustment bolt 104 passes through the mechanism fixing frame 102 and abuts against the floating mechanism body 100 .

[0036] In this technical solution, the floating adjustment bolt 104 is rotated to change its length after passing through the mechanism fixing frame 102, and then the floating mechanism body 100 is pushed to move by the floating adjustment bolt 104, thereby achieving preliminary debugging of the installation position of the floating mechanism body 100.

[0037] For example, see Figure 1-Figure 3 As shown, there are two floating shafts 103 , and both floating shafts 103 are stepped shafts.

[0038] In this technical solution, two floating shafts 103 are arranged in parallel, and a stepped shaft is used to facilitate the positioning of the mechanism fixing frame 102 on the shaft. The shoulders of the stepped shaft with different heights can limit the movement or movement trend of the mechanism fixing frame 102 on the shaft along the axial direction, prevent the mechanism fixing frame 102 from slipping during work, and reduce the influence of the axial pressure generated by some parts during work on other parts.

[0039] For example, see Figure 1-Figure 2 As shown, a safety gear adjusting bolt 105 is provided on the floating mechanism body 100 , and one end of the safety gear adjusting bolt 105 passes through the floating mechanism body 100 and abuts against the hexagon socket screw.

[0040] In this technical solution, the safety clamp adjusting bolt 105 is rotated to change its length after passing through the floating mechanism body 100, and then the safety clamp adjusting bolt 105 pushes the hexagon socket screw to move in the strip opening, so that the T-shaped guide rail is in the exact center of the safety clamp 101, thereby achieving precise adjustment of the position of the safety clamp 101.

[0041] For example, see Figure 1-Figure 3 As shown, the mechanism guide wheel module 106 includes a fixed base and a guide wheel. The fixed base is fixedly connected to the floating mechanism body 100, and the guide wheel is rotatably connected to the fixed base. There are four mechanism guide wheel modules 106 in total. The four mechanism guide wheel modules 106 are symmetrically arranged in groups of two, and the corresponding two guide wheels are respectively fitted with the two side surfaces of the T-shaped guide rail.

[0042] In this technical solution, the guide wheel fits against the side of the T-shaped guide rail, so that the entire safety clamp 101 can use the T-shaped guide rail as a guide. When the guide wheel runs to the inclined part of the T-shaped guide rail, the mechanism guide wheel module 106 close to the T-shaped guide rail will give a lateral force to the floating mechanism body 100, so that the entire mechanism floats left and right according to the inclination direction of the T-shaped guide rail. Even if the entire T-shaped guide rail is tilted more than 10mm, it will not cause the safety clamp 101 to be triggered incorrectly, which greatly reduces the installation accuracy requirements and processing requirements of the T-shaped guide rail, and greatly reduces the installation labor cost and manufacturing cost.

[0043] For example, see Figure 1-Figure 3As shown, there are two floating return springs 107 , and the two floating return springs 107 are arranged at the same end of the two floating shafts 103 .

[0044] In this technical solution, the two floating return springs 107 can be set at the left end of the two floating shafts 103, or at the right end of the two floating shafts 103. The two floating return springs 107 are set at the same end of the two floating shafts 103, which can ensure that the two floating return springs 107 are squeezed or stretched at the same time, making it convenient for the floating mechanism body 100 to float left and right, and avoiding interference with the left and right floating of the floating mechanism body 100 when the two floating return springs 107 are set at different ends of the two floating shafts 103.

[0045] Working principle: When the adaptive floating mechanism of the safety clamp is used, firstly, the mechanism fixing frame 102 is fixed on the carrier by bolts, and then the mechanism guide wheel module 106 and the oil-free bushing 108 are fixed to the corresponding positions of the floating mechanism main body 100, and then the floating shaft 103 is inserted through the oil-free bushing 108 and the floating return spring 107, and the two ends of the floating shaft 103 are locked on the mechanism fixing frame 102 by nuts, that is, the installation of the entire floating mechanism is completed, and then the floating mechanism is debugged by rotating the floating adjustment bolt 104 and the safety clamp adjustment bolt 105, and the T-shaped track is placed in the center of the safety clamp 101. When the carrier moves up and down and passes through the inclined part on the T-shaped track, the mechanism guide wheel module 106 close to the T-shaped track will give the floating mechanism main body 100 a lateral force, causing it to move left and right. When the carrier runs through this section of the inclined T-shaped track, the floating return spring will bounce the entire floating mechanism main body 100 back to its original position to achieve the reset function. The adaptive floating mechanism of the safety clamp has advanced design, compact structure and reliable operation. By setting the mechanism guide wheel module 106, the safety clamp 101 can use the T-shaped guide rail as a guide and float left and right according to the inclination direction of the T-shaped guide rail. Even if the entire T-shaped guide rail is tilted more than 10 mm, the safety clamp 101 will not be triggered by mistake, which greatly reduces the installation accuracy requirements and processing requirements of the T-shaped guide rail, thereby greatly reducing the installation labor cost and manufacturing cost. By setting the floating reset spring 107, the floating mechanism main body 100 can be reset as a whole. The entire mechanism is composed entirely of mechanical components with a simple and clear structure and simple function realization conditions, which increases the reliability of the mechanism and does not worry about the safety and anti-fall failure of the overall equipment during power outages. The entire mechanism is relatively regular and can adapt to a variety of common safety clamps on the market. It has a high degree of modularization and is simple to install and debug. It can be completed by simply adjusting the bolt depth, which reduces the difficulty of debugging the anti-fall safety clamp for workers.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety clamp adaptive floating mechanism, characterized in that: include: A floating mechanism body (100), a safety clamp (101) being fixed on one side of the floating mechanism body (100), and mechanism guide wheel modules (106) being fixed on both upper and lower ends of one side of the floating mechanism body (100); A mechanism fixing frame (102), the mechanism fixing frame (102) being arranged on two corresponding sides of a floating mechanism main body (100), the mechanism fixing frame (102) and the floating mechanism main body (100) being provided with corresponding through holes, and an oil-free bushing (108) being fixed in the through hole on the mechanism fixing frame (102); A floating shaft (103), both ends of which are connected to the floating mechanism body (100) and the mechanism fixing frame (102) through through holes, and are locked on the mechanism fixing frame (102) through nuts. A floating return spring (107) is provided at one end of the floating shaft (103), and the floating return spring (107) is arranged between the mechanism fixing frame (102) and the oil-free bushing (108).

2. The safety clamp adaptive floating mechanism according to claim 1, characterized in that: A strip-shaped opening is provided on one side of the floating mechanism body (100), and the floating mechanism body (100) is fixedly connected to the safety clamp (101) via a hexagon socket screw.

3. The safety clamp adaptive floating mechanism according to claim 1, characterized in that: A floating adjustment bolt (104) is provided on the mechanism fixing frame (102), and one end of the floating adjustment bolt (104) passes through the mechanism fixing frame (102) and abuts against the floating mechanism main body (100).

4. The safety clamp adaptive floating mechanism according to claim 1, characterized in that: There are two floating shafts (103) in total, and both floating shafts (103) are stepped shafts.

5. The safety clamp adaptive floating mechanism according to claim 2, characterized in that: The floating mechanism body (100) is provided with a safety clamp adjustment bolt (105), one end of which passes through the floating mechanism body (100) and abuts against the hexagon socket screw.

6. The safety clamp adaptive floating mechanism according to claim 1, characterized in that: The mechanism guide wheel module (106) includes a fixed base and a guide wheel, wherein the fixed base is fixedly connected to the floating mechanism body (100), and the guide wheel is rotatably connected to the fixed base. There are four mechanism guide wheel modules (106) in total, and the four mechanism guide wheel modules (106) are symmetrically arranged in groups of two, and the two corresponding guide wheels are respectively fitted with the two side surfaces of the T-shaped guide rail.

7. The safety clamp adaptive floating mechanism according to claim 1, characterized in that: There are two floating return springs (107) in total, and the two floating return springs (107) are arranged at the same end of the two floating shafts (103).

Images