Force measuring device for safety tongs

Abstract

The utility model discloses a force measuring device for safety tongs, and particularly relates to the technical field of force measurement of safety tongs, which comprises a bottom plate, a fixing frame is welded on the bottom plate, a connecting rod is mounted on the outer side of the top end of the fixing frame, a disc hand wheel is mounted at one end of the connecting rod, and a steel wire rope is connected to the other end of the connecting rod. Fixing beams are symmetrically installed on the bottom plate, a bolting plate is connected between the fixing beams, a safety tongs body is installed on the bolting plate, a braking part of the safety tongs body is connected with a safety tongs pull arm, the safety tongs pull arm is connected with one end of a steel wire rope, and a guide rail is installed on the fixing frame. The utility model effectively solves the traditional problems of complicated installation, difficult debugging and inaccurate data, and has the advantages of simple and convenient installation, accurate simulation, reliable data, stable and durable structure, wide application to the force measurement and related performance detection of the elevator safety tongs, and strong improvement of the elevator safety guarantee level and the detection efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of force measurement technology for safety clamps, and more specifically, to a force measurement device for safety clamps. Background Technology

[0002] The safety brake is a safety protection device for elevators. An elevator safety brake is a safety device that, under the control of the speed governor, stops the elevator car and clamps it onto the guide rails when the elevator speed exceeds the speed limit set by the speed governor, or when the suspension rope breaks or slackens. A force measuring device for the elevator safety brake is required when measuring the force applied to it.

[0003] However, existing elevator safety clamp force measuring devices are cumbersome to install and inconvenient to operate. They also require on-site installation, debugging, and testing after the elevator leaves the factory, which makes debugging inconvenient and results in inaccurate data.

[0004] Therefore, a safety clamp force measuring device is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a safety clamp force measuring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety clamp force measuring device, including a base plate, a fixed frame welded to the base plate, a connecting rod installed on the outer side of the top of the fixed frame, a handwheel installed at one end of the connecting rod, a steel wire rope connected to the other end of the connecting rod, a force gauge connected to the bottom end of the steel wire rope, fixed beams symmetrically installed on the base plate, fastening plates connected between the fixed beams, a safety clamp body installed on the fastening plates, a safety clamp pull arm connected to the braking part of the safety clamp body, the safety clamp pull arm connected to one end of the steel wire rope, and a guide rail installed on the fixed frame.

[0007] Preferably, a reinforcing beam is welded to one side of the fixing frame, and the reinforcing beam has a trapezoidal structure.

[0008] Preferably, the fixing frame has multiple fixing holes, and multiple studs are inserted into the fixing holes to fix the guide rail. The guide rail is slidably engaged with the safety clamp body.

[0009] Preferably, a plurality of fixing seats are welded on the base plate, and the plurality of fixing seats together support the fixing beam.

[0010] Preferably, the outer surfaces of the base plate, fixing frame, reinforcing beam, fixing beam, fixing seat and bolt plate are all coated with anti-rust paint.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. By accurately simulating the force conditions of the safety clamp in actual working scenarios, the accuracy of data detection is improved, and the performance of the safety clamp is effectively evaluated. This improves the problem of inconvenience in debugging and inaccurate data when the installer lacks tools on site. Moreover, the clamp can be directly installed and fixed with bolts during force measurement, making installation convenient and easy. Furthermore, by testing the safety clamp in advance, the problem of inconvenience in debugging and inaccurate data when the installer lacks tools on site is improved.

[0013] 2. Through stable operation, precise guide rail guidance, solid fixed structure, and reasonable stress distribution, the safety clamp braking action and force gauge response are guaranteed to be stable and repeatable. The measured data are true and reliable, providing a solid basis for performance evaluation and quality control.

[0014] 3. Thorough protection with anti-rust paint covers key components, resists corrosion and rust, extends service life, reduces replacement frequency and maintenance costs, maintains a clean appearance, and facilitates management, maintenance, and troubleshooting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front view of the present invention.

[0016] Figure 2 This is a side view of the structural diagram of this utility model.

[0017] Figure 3 This is a top view schematic diagram of the structure of this utility model.

[0018] The attached diagram is labeled as follows: 1. Base plate; 2. Fixing frame; 3. Reinforcing beam; 4. Handwheel; 5. Connecting rod; 6. Steel wire rope; 7. Force gauge; 8. Fixing beam; 9. Fixing seat; 10. Fastening plate; 11. Safety clamp body; 12. Safety clamp pull arm; 13. Guide rail. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] As attached Figures 1-3The safety clamp force measuring device shown includes a base plate 1, a fixing frame 2 welded to the base plate 1, a connecting rod 5 installed on the outer side of the top of the fixing frame 2, a handwheel 4 installed at one end of the connecting rod 5, a steel wire rope 6 connected to the other end of the connecting rod 5, a force gauge 7 connected to the bottom end of the steel wire rope 6, fixing beams 8 symmetrically installed on the base plate 1, fastening plates 10 connected between the fixing beams 8, a safety clamp body 11 installed on the fastening plates 10, a safety clamp pull arm 12 connected to the braking part of the safety clamp body 11, the safety clamp pull arm 12 connected to one end of the steel wire rope 6, and a guide rail 13 installed on the fixing frame 2.

[0021] In practice, the lower crossbeam of the safety clamp body 11 is placed on the fixed beam 8, and then the safety clamp body 11 is fixed to the bolt plate 10 with M16X35 bolts, allowing the safety clamp body 11 to slide against the guide rail 13. Then, the bottom of the force gauge 7 is connected to the safety clamp pull arm 12. By rotating the handwheel 4, the steel wire rope 6 is moved via the connecting rod 5. The steel wire rope 6 pulls the safety clamp pull arm 12, causing the safety clamp body 11 to brake on the guide rail 13. During this process, the force gauge 7 measures the tension on the steel wire rope 6 in real time. Based on the relationship between the tension value and the braking performance of the safety clamp, the force measurement data of the safety clamp is accurately obtained. This is used to determine whether the safety clamp performance meets the standards and whether it can reliably brake the car in emergency situations such as elevator overspeed. This can accurately simulate the force conditions of the safety clamp in the actual working scenario, improve the accuracy of data detection, and effectively evaluate the performance of the safety clamp. This improves the problems of inconvenience in debugging and inaccurate data when the installation personnel lack tools on site.

[0022] A reinforcing beam 3 is welded to one side of the fixing frame 2, and the reinforcing beam 3 has a trapezoidal structure.

[0023] In practice, by strengthening beam 3 and using its trapezoidal structure to reasonably disperse stress, it works in conjunction with the fixed frame 2 to widely transmit the stress concentrated in the key parts of the fixed frame 2, such as the tension transmitted by the connecting rod 5 and the reaction force of the safety clamp, to the overall frame of the device. This avoids structural failure caused by excessive local stress, ensures stable operation of the device under high load and frequent testing conditions, and guarantees that the force measurement process of the safety clamp is interference-free and the data is reliable.

[0024] The fixing frame 2 has multiple fixing holes, and multiple studs are inserted into the fixing holes to fix the guide rail 13. The guide rail 13 is slidably engaged with the safety clamp body 11.

[0025] In practice, the guide rail 13 provides precise guidance and stable support for the safety clamp body 11. The safety clamp body 11 is pulled and braked by the wire rope 6 and slides on the guide rail 13. The movement trajectory and direction are strictly limited to avoid uneven force, movement deviation and additional friction loss. The bolt fixation ensures that the position of the guide rail 13 is constant, so that the braking action of the safety clamp body 11 and the force response of the force gauge 7 have high repeatability and stability. The measured data truly reflects the performance of the safety clamp, laying the foundation for performance evaluation and quality control.

[0026] Multiple fixing seats 9 are welded onto the base plate 1, and the multiple fixing seats 9 together support the fixing beam 8.

[0027] In practice, multiple fixed seats 9 are welded to the bottom of the base plate 1. The position and height of each fixed seat 9 are precisely coordinated to jointly construct a stable support plane. The fixed beam 8 is placed stably on the fixed seat 9. After fine adjustment and positioning, the fixed beam 8 and the fixed seat 9 are tightly connected by welding to form a stable load-bearing structure. This ensures that the fixed beam 8 does not have obvious deformation or displacement when bearing the weight of the safety clamp body 11 and related components and the braking impact force, thus ensuring the overall structural rigidity and stability of the device.

[0028] The outer surfaces of the base plate 1, fixing frame 2, reinforcing beam 3, fixing beam 8, fixing seat 9, and bolt plate 10 are all coated with anti-rust paint.

[0029] In practice, by spraying anti-rust paint on the outer surfaces of the base plate 1, the fixing frame 2, the reinforcing beam 3, the fixing beam 8, the fixing seat 9, and the bolt plate 10, rust can be prevented, service life can be improved, and the cleanliness of the device surface can be maintained.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety clamp force measuring device, comprising a base plate (1), characterized in that: A fixing frame (2) is welded on the base plate (1). A connecting rod (5) is installed on the outer side of the top of the fixing frame (2). A handwheel (4) is installed on one end of the connecting rod (5). A wire rope (6) is connected to the other end of the connecting rod (5). A force gauge (7) is connected to the bottom end of the wire rope (6). Fixing beams (8) are symmetrically installed on the base plate (1). A fastening plate (10) is connected between the fixing beams (8). A safety clamp body (11) is installed on the fastening plate (10). A safety clamp arm (12) is connected to the braking part of the safety clamp body (11). The safety clamp arm (12) is connected to one end of the wire rope (6). A guide rail (13) is installed on the fixing frame (2).

2. The safety clamp force measuring device according to claim 1, characterized in that: A reinforcing beam (3) is welded to one side of the fixing frame (2), and the reinforcing beam (3) has a trapezoidal structure.

3. The safety clamp force measuring device according to claim 1, characterized in that: The fixing frame (2) has multiple fixing holes, and multiple studs are inserted into the fixing holes to fix the guide rail (13). The guide rail (13) slides with the safety clamp body (11).

4. The safety clamp force measuring device according to claim 1, characterized in that: Multiple fixing seats (9) are welded onto the base plate (1), and the multiple fixing seats (9) together support the fixing beam (8).

5. The safety clamp force measuring device according to claim 1, characterized in that: The outer surfaces of the base plate (1), fixing frame (2), reinforcing beam (3), fixing beam (8), fixing seat (9) and bolt plate (10) are all coated with anti-rust paint.

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