Straight pull type instantaneous electronic safety tongs

Abstract

The utility model relates to a straight pull type instantaneous electronic safety gear, and relates to the technical field of elevator electronic safety gears. The device comprises a clamp body, a pin roller, a lifting rod, an electromagnet, a spring and a mounting bracket, when the electromagnet is electrified, the spring is in a compressed state, so that the second end of the lifting rod covers the roller; when the electromagnet is powered off, the spring is in a release state, so that the pin roller and the lifting rod move relatively, the pin roller protrudes out of the second end of the lifting rod, the pin roller and the clamping part of the clamp body jointly extrude the elevator guide rail, and the elevator car is braked. Through the matched design of the lifting rod and the electromagnet, when the movement of the elevator car is abnormal, the roller can move relative to the lifting rod so as to move to the outside of the lifting rod and be matched with the clamp body to extrude the elevator guide rail, and the movement state of the elevator car is limited. And under the light-weight structural design, the stability of the application state of the roller is guaranteed, and then the accident probability of the jamming risk of the roller and the lifting rod is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator electronic safety clamps, in particular to a direct-pull instantaneous electronic safety clamp. Background Art

[0002] The elevator safety clamp device is a safety device that stops the car and clamps it on the guide rail when the speed of the elevator exceeds the speed limit or rated speed set by the speed limiter, or when the suspension rope breaks or loosens. It provides effective protection for the safe operation of the elevator and is generally installed on the car frame or counterweight frame.

[0003] In the related art, the longitudinal dimension of the electronic safety clamp body is relatively large, and the trigger spring is an external common compression spring. After installation, the spring and the guide mechanism are usually in an exposed state.

[0004] The safety clamp structure in the prior art is too large and is not suitable for lightweight application scenarios such as home elevators. In addition, the exposed design of the spring and guide mechanism makes it easy to get stuck during use. Summary of the invention

[0005] The utility model relates to a direct-pull instantaneous electronic safety clamp, which can adapt to lightweight application scenarios and reduce the probability of accidents caused by the risk of jamming of springs, guide rails, lifting devices, etc. The device includes a clamp body, a roller, a lifting rod, an electromagnet, a spring and a mounting bracket;

[0006] The roller is movably connected to the lifting rod;

[0007] The clamp body is fixedly connected to the mounting bracket, and the interior of the clamp body is used to pass through the elevator guide rail;

[0008] The electromagnet is equipped with an electromagnet push rod, and the electromagnet is fixedly connected to the mounting bracket;

[0009] The spring is connected to the electromagnet push rod;

[0010] The end of the electromagnet push rod is connected to the lifting rod

[0011] The electromagnet push rod is connected to the first end of the lifting rod;

[0012] The lifting rod is fixedly connected to the first surface of the roller;

[0013] The second surface of the roller is in contact with the inner side surface of the caliper body;

[0014] The second end of the lifting rod corresponds to the position of the clamp body;

[0015] When the electromagnet is energized, the spring is in a compressed state so that the second end of the lifting rod covers the roller;

[0016] When the electromagnet is powered off, the spring is in a released state, so that the roller and the lifting rod move relative to each other, protruding from the second end of the lifting rod to squeeze the elevator guide rail together with the clamping part of the clamp body to brake the elevator car.

[0017] In a possible implementation, the inner groove surface of the caliper body has a guide rail;

[0018] The second end of the roller is engaged with the guide rail.

[0019] In a possible implementation, the guide rail is a diagonal guide rail;

[0020] The end point of the guide rail is close to the clamping portion of the clamp body;

[0021] The starting point of the guide rail is away from the clamping portion of the pliers body.

[0022] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes an electromagnet housing;

[0023] The electromagnet, the electromagnet push rod and the spring are located inside the electromagnet housing.

[0024] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a first limit screw;

[0025] The first limit screw is fixedly connected to the mounting bracket and movably connected to the lifting rod;

[0026] The first limiting screw is used to limit the displacement of the lifting rod relative to the mounting bracket.

[0027] In a possible implementation, the number of the first limiting screws is 2.

[0028] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a second limit screw;

[0029] The second limit screw is fixedly connected to the lifting rod and movably connected to the roller;

[0030] The second limit screw is used to limit the relative displacement between the roller and the lifting rod.

[0031] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a reset device;

[0032] The resetting device is connected with the roller.

[0033] In a possible implementation manner, the resetting device is implemented as a resetting rod.

[0034] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a micro switch;

[0035] The micro switch is fixedly connected to the mounting bracket;

[0036] When the lifting rod and the mounting bracket move relative to each other, the micro switch generates a control signal.

[0037] The beneficial effects brought by the technical solution provided by the utility model include at least:

[0038] Through the coordinated design of the lifting rod and the electromagnet, and the configuration of the roller that cannot be detached, when the movement of the elevator car is abnormal, the roller will move relative to the lifting rod to move to the outside of the lifting rod and cooperate with the clamp body to squeeze the elevator guide rail between the two to achieve the movement state restriction of the elevator car. Under the lightweight structural design, the stability of the application state of the roller is guaranteed, thereby reducing the probability of accidents caused by the risk of jamming of the roller and the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 The utility model shows a structural schematic diagram of a direct-pull instantaneous electronic safety clamp in a normal operating state.

[0041] Figure 2 The utility model shows a structural schematic diagram of a direct-pull instantaneous electronic safety clamp in an abnormal operating state.

[0042] Figure 3 The three-dimensional structural schematic diagram of a direct-pull instantaneous electronic safety clamp provided by the utility model is shown.

[0043] Figure 4 A schematic cross-sectional view showing the connection relationship between an electromagnet, a spring and a lifting rod in a direct-pull instantaneous electronic safety clamp provided by the utility model.

[0044] Figure 5 A schematic diagram of the arrangement of a guide rail on the surface of a caliper body provided by the utility model is shown.

[0045] The markings in the accompanying drawings are as follows:

[0046] 1- clamp body, 2- roller, 3- lifting rod, 4- electromagnet, 5- spring, 6- mounting bracket, 7- electromagnet housing, 8- first limit screw, 9- second limit screw, 10- reset device, 110- micro switch;

[0047] 11-Guide rail;

[0048] 41-Solenoid push rod. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0050] Figure 1 The figure shows a schematic structural diagram of a direct-pull instantaneous electronic safety clamp provided by an exemplary embodiment of the utility model in a normal operating state. Figure 2 A schematic structural diagram of a direct-pull instantaneous electronic safety clamp in an abnormal operating state provided by an exemplary embodiment of the utility model is shown. Figure 3 The three-dimensional structural schematic diagram of a direct-pull instantaneous electronic safety clamp provided by the utility model is shown. Figure 4 A schematic cross-sectional view showing the connection relationship between the electromagnet 4, the spring 5 and the lifting rod 3 in a direct-pull instantaneous electronic safety clamp provided by the utility model is shown. Please refer to Figures 1 to 4 The device comprises a clamp body 1, a roller 2, a lifting rod 3, an electromagnet 4, a spring 5 and a mounting bracket 6; the roller 2 is movably connected to the lifting rod 3; the clamp body 1 is fixedly connected to the mounting bracket 6, and the interior of the clamp body 1 is used to pass through the elevator guide rail 11; the electromagnet 4 is provided with an electromagnet push rod 41, and the electromagnet 4 is fixedly connected to the mounting bracket 6; the spring 5 is connected to the electromagnet push rod 41; the end of the electromagnet push rod 41 is connected to the lifting rod 3; the lifting rod 3 is fixedly connected to the first surface of the roller 2; the second surface of the roller 2 is in contact with the inner side surface of the clamp body 1; the second end of the lifting rod 3 corresponds to the position of the clamp body 1; when the electromagnet 4 is energized, the spring 5 is in a compressed state so that the second end of the lifting rod 3 covers the roller 2; when the electromagnet 4 is de-energized, the spring 5 is in a released state so that the roller 2 and the lifting rod 3 move relative to each other, protruding from the second end of the lifting rod 3, so as to squeeze the elevator guide rail 11 together with the clamping part of the clamp body 1 to brake the elevator car.

[0051] In the embodiment of the utility model, the electromagnet 4 is provided with an electromagnet push rod 41, and the electromagnet push rod 41 can move relative to the electromagnet 4. That is, the electromagnet 4 is the energy supply part, and the electromagnet push rod 41 is the part that transfers kinetic energy based on the functional movement of the electromagnet. During the movement of the electromagnet push rod 41, the spring is compressed to store energy, and the spring is released to release elastic potential energy by releasing the spring 5.

[0052] Optionally, the specific structure of the electromagnet push rod 41 is as follows: Figure 4 As shown, the present application does not limit the specific structural implementation of the electromagnetic push rod 41.

[0053] In the embodiment of the utility model, the electromagnet push rod 41, the spring 5 and the lifting rod 3 are combined to form a part that provides feedback on the movement state of the elevator car and drives the roller 2 to move. When the elevator is in a normal movement state, the electromagnet 4 compresses the spring 5 to accumulate elastic potential energy. At the same time, the lifting rod 3 is pressed down, and the roller 2 and the lifting rod 3 are simultaneously driven to be pressed down to be located on the inner side of the lifting rod 3 and to be close to the clamp body 1. When the elevator is in an abnormal movement state, the electromagnet 4 is powered off, so that the spring 5 releases the elastic potential energy and then enters the release state. The lifting rod 3 is driven up, and at the same time, the roller 2 is also lifted up. Since the roller 2 is in contact with the clamp body 1, at this time, the roller 2 will move as follows. Figure 2 The state shown is protruding from the end of the lifting rod 3 in contact with it. And in cooperation with the clamp body 1, the elevator guide rail 11 located between the two is squeezed, thereby achieving braking of the elevator guide rail 11.

[0054] It should be noted that, in the embodiments of the present utility model, Figure 1 or Figure 2 As shown, in order to ensure the working stability of the electromagnet 4 and the spring 5, the electromagnet 4 and the spring 5 need to be protected and covered.

[0055] In the embodiment of the utility model, the roller 2 and the lifting rod 3 can be connected by a sheet metal part. The utility model does not limit the specific connection method of the roller 2 and the lifting rod 3.

[0056] In the embodiment of the utility model, the clamp body 1 has a clamping portion, and during installation, the elevator guide rail 11 is located on the inner side of the clamp body 1 .

[0057] In the embodiment of the utility model, the mounting bracket 6 is used to fix the position of the electromagnet 4 and the clamp body 1. That is, in some cases, the clamp body 1 is also fixedly connected to the mounting bracket 6, or the clamp body 1 and the mounting bracket 6 are integrally formed.

[0058] Next, the specific structure of the direct-pull instantaneous electronic safety clamp provided by the utility model is further described:

[0059] In one possible implementation, see Figure 5 , the inner groove surface of the caliper body 1 has a guide rail 11; the second end of the roller 2 cooperates with the guide rail 11. In this case, the guide rail 11 is an oblique guide rail; the end point of the guide rail 11 is close to the clamping part of the caliper body 1; the starting point of the guide rail 11 is far away from the clamping part of the caliper body 1. At this time, when the roller 2 is driven by the lifting rod 3 and moves upward relative to the caliper body 1, the roller 2 will move obliquely along the guide rail 11.

[0060] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes an electromagnet housing 7, and the electromagnet push rod 41 and the spring 5 are located inside the electromagnet housing 7 to achieve working stability of the electromagnet push rod 41 and the spring 5. The electromagnet housing 7 is fixedly connected to the mounting bracket 6.

[0061] In one possible implementation, see Figure 1 as well as Figure 2 The direct-pull instantaneous electronic safety clamp further includes a first limit screw 8; the first limit screw 8 is fixedly connected to the mounting bracket 6 and movably connected to the lifting rod 3; the first limit screw 8 is used to limit the displacement of the lifting rod 3 relative to the mounting bracket 6. In this case, in order to ensure that the lifting rod 3 does not excessively displace in the lateral direction, the number of the first limit screws 8 is 2.

[0062] In a possible implementation, the direct-pull instantaneous electronic safety clamp also includes a second limit screw 9, which is fixedly connected to the lifting rod 3 and movably connected to the roller 2; the second limit screw 9 is used to limit the relative displacement between the roller 2 and the lifting rod 3.

[0063] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a reset device 10 , and the reset device 10 is connected to the roller 2 .

[0064] In one embodiment of the present invention, the reset device 10 is implemented as a reset rod.

[0065] The reset rod is a rod-shaped structure, one end of which is connected to the lifting rod 3, and the other end is implemented as a handle. When the staff resets the roller 2, the roller 2 can be reset to the inside of the lifting rod 3 by holding and shaking the handle.

[0066] In a possible implementation, the direct-pull instantaneous electronic safety clamp further includes a micro switch 110. The micro switch 110 is fixedly connected to the mounting bracket 6. When the lifting rod 3 and the mounting bracket 6 move relative to each other, the micro switch 110 generates a control signal. Optionally, the control signal can be sent to an alarm module to indicate that the working state of the device is abnormal; or, the control signal can be sent to a computer device to generate an alarm prompt. The utility model does not limit the specific function of the control signal.

[0067] In summary, the direct-pull instantaneous electronic safety clamp provided by the utility model is designed with a lifting rod and an electromagnet, and is configured as a non-detachable roller. When the movement of the elevator car is abnormal, the roller will move relative to the lifting rod to move to the outside of the lifting rod, and cooperate with the clamp body to squeeze the elevator guide rail between the two, thereby limiting the movement state of the elevator car. Under the lightweight structural design, the stability of the application state of the roller is guaranteed, thereby reducing the probability of accidents caused by the risk of jamming of the roller and the lifting mechanism.

[0068] The direct-pull instantaneous electronic safety clamp provided by the utility model also has at least the following advantages:

[0069] (1) Through specially designed electromagnets, specially designed clamp bodies and lifting rods, an electronic safety clamp with high protection level, high reliability, miniaturization and easy maintenance can be achieved.

[0070] (2) Using electromagnets with special structures, the design features high protection, high reliability, low temperature rise, high thrust and small size;

[0071] (3) The lifting mechanism is combined with a specially designed clamp body, and the roller is in a non-detachable form, which improves the working reliability of the safety clamp; the electromagnet has a built-in electromagnet push rod and a working spring, thereby reducing the longitudinal size of the electronic safety clamp.

[0072] (4) With its extremely small dimensions, it meets the selection and use requirements of electronic safety clamps, saves the installation space in the well, reduces the difficulty of installation and adjustment, and solves the problem of maintenance difficulties in subsequent use.

[0073] The above are only optional embodiments of the present invention and are not intended to limit the present invention. 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 direct-pull instantaneous electronic safety clamp, characterized in that: The direct-pull instantaneous electronic safety clamp comprises a clamp body (1), a roller (2), a lifting rod (3), an electromagnet (4), a spring (5) and a mounting bracket (6); The roller (2) is movably connected to the lifting rod (3); The clamp body (1) is fixedly connected to the mounting bracket (6), and the interior of the clamp body (1) is used to pass through the elevator guide rail; The electromagnet is provided with an electromagnet push rod (41), and the electromagnet (4) is fixedly connected to the mounting bracket (6); The spring (5) is connected to the electromagnet push rod (41); The end of the electromagnet push rod (41) is connected to the lifting rod (3); The lifting rod (3) is fixedly connected to the first surface of the roller (2); The second surface of the roller (2) is in contact with the inner side surface of the caliper body (1); The second end of the lifting rod (3) corresponds to the position of the clamp body (1); When the electromagnet (4) is energized, the spring (5) is in a compressed state, so that the second end of the lifting rod (3) covers the roller (2); When the electromagnet (4) is powered off, the spring (5) is in a released state, so that the roller (2) and the lifting rod (3) move relative to each other, protruding from the second end of the lifting rod (3) to squeeze the elevator guide rail together with the clamping part of the clamp body (1) to brake the elevator car.

2. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The inner groove surface of the clamp body (1) has a guide rail (11); The second end of the roller (2) cooperates with the guide rail (11).

3. The direct-pull instantaneous electronic safety clamp according to claim 2, characterized in that: The guide rail (11) is a diagonal guide rail; The end point of the guide rail (11) is close to the clamping portion of the clamp body (1); The starting point of the guide rail (11) is far away from the clamping portion of the pliers body (1).

4. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The direct-pull instantaneous electronic safety clamp further comprises an electromagnet housing (7); The electromagnet (4), the electromagnet push rod (41) and the spring (5) are located inside the electromagnet housing (7).

5. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The direct-pull instantaneous electronic safety clamp further comprises a first limit screw (8); The first limit screw (8) is fixedly connected to the mounting bracket and movably connected to the lifting rod (3); The first limiting screw (8) is used to limit the displacement of the lifting rod (3) relative to the mounting bracket (6).

6. The direct-pull instantaneous electronic safety clamp according to claim 5, characterized in that: The number of the first limiting screws (8) is 2.

7. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The direct-pull instantaneous electronic safety clamp further comprises a second limit screw (9); The second limit screw (9) is fixedly connected to the lifting rod (3) and movably connected to the roller (2); The second limit screw (9) is used to limit the relative displacement between the roller (2) and the lifting rod (3).

8. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The direct-pull instantaneous electronic safety clamp further comprises a reset device (10); The resetting device (10) is connected to the lifting rod (3).

9. The direct-pull instantaneous electronic safety clamp according to claim 8, characterized in that: The resetting device (10) is implemented as a resetting rod.

10. The direct-pull instantaneous electronic safety clamp according to claim 1, characterized in that: The direct-pull instantaneous electronic safety clamp further comprises a micro switch (110); The micro switch (110) is fixedly connected to the mounting bracket (6); When the lifting rod (3) and the mounting bracket (6) undergo relative movement, the micro switch (110) generates a control signal.

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