Gravity reset triggering device for lifting appliance

Abstract

The utility model belongs to the technical field of sling manufacturing, and particularly relates to a gravity reset triggering device for a sling, which comprises a contact part arranged on a hook head of a clamp arm and used for being in contact with a high-temperature steel coil; the starting switch is arranged at one end, far away from the contact part, of the clamp arm; the starting switch is electrically connected with a control unit on the clamp; the triggering part is used for controlling the starting switch to send a control signal to the control unit; the contact part is in transmission fit with the trigger part through the transmission part; wherein the high-temperature steel coil is in contact with the contact part, so that the trigger part can control the starting switch to send a control signal to the control unit. According to the utility model, direct contact between the starting switch and the high-temperature steel coil can be avoided, the service life is prolonged, and the reliability and safety of the operation of the clamp are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sling manufacturing technical field especially relates to a gravity reset trigger device for hoist. BACKGROUND

[0002] With the rapid development of sling industry, the additional function of sling is more and more, and the safety performance is higher and higher. A kind of sling for high-temperature steel coil hoisting operation safety detection function arises at the historic moment, it is mainly used for the safety detection of load bearing when high-temperature steel coil hoisting operation.

[0003] In the production workshop of high-temperature steel coil, the safety of high-temperature steel coil hoisting operation is more and more high, and the clamping action of steel coil must be accurate in place. Because electrical components are not high-temperature resistant, most of the electrically operated lying roll clamp arms of high-temperature steel coil are not designed with electrical detection elements, and the clamping of high-temperature steel coil completely relies on the observation of operators. When the operator's line of sight is blocked or the night vision is poor, safety accidents are prone to occur. A small part of the electrically operated lying roll clamp arms of high-temperature steel coil are set with high-temperature resistant detection switches at the load bearing detection position of traditional normal temperature steel coil electrically operated lying roll clamp, however, the temperature of steel coil is high, the temperature resistance of high-temperature resistant detection switch is limited, and the failure rate of detection switch is very high, which cannot guarantee normal production efficiency.

[0004] Therefore, it is necessary to provide a gravity reset trigger device for hoist to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] The utility model aims at providing a gravity reset trigger device for hoist to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides a gravity reset trigger device for hoist, comprising:

[0007] Contact part, the contact part is arranged on the hook head of clamp arm, and the contact part is used for contacting with high-temperature steel coil;

[0008] Starting switch, the starting switch is arranged at the end of the clamp arm away from the contact part;The starting switch is electrically connected with the control unit on clamp;

[0009] Trigger part, the trigger part is used for controlling the starting switch to send control signal to the control unit;

[0010] Transmission part, the contact part is transmission matched with the trigger part through the transmission part;

[0011] Among them, the high-temperature steel coil contacts the contact part, so that the trigger part can control the starting switch to send control signal to the control unit.

[0012] Preferably, the contact part comprises a lining plate fixedly connected to the hook head of the clamp arm, a load-bearing pin is slidingly connected to the lining plate, the load-bearing pin is vertically arranged, and the load-bearing pin is in contact with the transmission part.

[0013] Preferably, the transmission part comprises a rocker, the clamp arm is a hollow structure, a pin shaft is fixedly connected to the inner wall of the clamp arm, the middle part of the rocker is rotatably connected to the pin shaft, one end of the rocker is in contact with the load-bearing pin, and the other end of the rocker is in transmission cooperation with the trigger part.

[0014] Preferably, the trigger part comprises a guide rod, two long waist holes are formed in the guide rod, two positioning pin shafts are fixedly arranged on the inner wall of the clamp arm, the two positioning pin shafts are arranged in a same vertical direction, the guide rod is slidingly sleeved on the positioning pin shafts through the long waist holes, the bottom end of the guide rod is in transmission cooperation with the end of the rocker away from the load-bearing pin, the top end of the guide rod is in frictional contact with the starting switch, and the self-weight of the load-bearing pin is less than the self-weight of the guide rod.

[0015] Preferably, the end of the rocker away from the load-bearing pin is fixedly connected with a fixed shaft, the bottom end of the guide rod is provided with a semicircular notch, the semicircular notch is matched with the fixed shaft, and the guide rod is rotatably connected to the fixed shaft through the semicircular notch.

[0016] Preferably, the positioning pin shafts are provided with a first positioning sleeve and a second positioning sleeve, and the guide rod is arranged between the first positioning sleeve and the second positioning sleeve.

[0017] Compared with the prior art, the gravity reset trigger device has the following advantages and technical effects:

[0018] The contact part of the gravity reset trigger device for the lifting appliance can be directly in contact with the high-temperature steel roll, the contact part can transmit the pressure from the high-temperature steel roll to the trigger part through the transmission part by extrusion of the high-temperature steel roll, and finally the trigger part can make the starting switch work and transmit the electric signal to the control unit on the clamp.

[0019] The gravity reset trigger device for the lifting appliance can avoid direct contact between the starting switch and the high-temperature steel roll, thereby avoiding damage of the starting switch caused by contact with high temperature, prolonging the service life, and improving the reliability and safety of the operation of the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0021] Fig. 1 A structural schematic view of a gravity reset trigger device for a lifting appliance is provided in the present application.

[0022] Fig. 2 A side view of a gravity reset trigger device for a lifting appliance is provided in the present application.

[0023] Wherein: 1, bearing pin; 2, backing plate; 3, rocker; 4, pin shaft; 5, guide rod; 6, positioning pin shaft; 7, positioning sleeve one; 8, positioning sleeve two; 9, starting switch; 10, jaw arm; 11, long waist hole; 12, high-temperature steel coil; 13, fixed shaft; 14, semicircular notch. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The described embodiments are only some of the embodiments of the present application, not all the embodiments. All other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] The technical terms involved in the embodiments are explained as follows:

[0026] The working principle of the starting switch (also known as the master switch or master controller) is mainly based on the internal contact structure and the design of the operating mechanism. The following is a detailed explanation of the working principle of the starting switch:

[0027] I. Contact structure

[0028] The starting switch usually contains a moving contact and a stationary contact. When the switch is operated (such as pressing, rotating, etc.), the internal moving contact will move relative to the stationary contact, thereby changing the connection state of the circuit. Specifically, the contact or separation of the moving contact and the stationary contact determines the on-off of the circuit.

[0029] II. Operating mechanism

[0030] The operating mechanism of the starting switch is designed to receive external operating force and convert it into the movement of internal contacts. This usually includes external operating components such as buttons, knobs, levers, etc., and transmission mechanisms (such as springs, levers, etc.) connected to them. When the external operating component is operated, the transmission mechanism drives the moving contact to move, realizing the on-off of the circuit.

[0031] III. Working principle example

[0032] Push button switch: Push button switch is a common starting switch. Its working principle is to apply external force by pressing the button to push the moving contact to close or open the switch, thereby realizing the on-off of the circuit control. Push button switch usually has three structure forms of normally closed, normally open and composite to meet different control needs.

[0033] Travel switch: Travel switch is another common starting switch. It pushes the travel switch push rod by mechanical action to generate pressing force to drive the moving contact to act, realizing the normally open and normally closed point switching of the switch. Travel switch is commonly used to control the trigger signal of the control loop, such as the limit protection of mechanical equipment.

[0034] Master controller: Master controller is a more complex starting switch. It is usually composed of contact system, operating mechanism, shaft, gear reduction mechanism, cam, etc. Its working principle is to drive the shaft to rotate through the operating mechanism, and then drive the cam to rotate. The rotation angle and number of the cam determine the action sequence and number of the contact, thereby realizing the control of multiple circuits.

[0035] IV. Working principle of special applications

[0036] In some special applications, the working principle of the starting switch may be more complex. For example, the working principle of the command trigger switch (such as three-electrode trigger spark switch) involves physical processes such as electric field, magnetic field and gas discharge. Such switches are usually used in places that require high stability and reliability, such as switching elements in pulse power technology.

[0037] Reference Figs. 1-2 The utility model provides a gravity reset trigger device for lifting appliance, include:

[0038] Contact part, contact part sets up on the hook head of the jaw arm 10, contact part is used for contacting with high temperature steel roll 12;

[0039] Starting switch 9, starting switch 9 sets up at the end of jaw arm 10 far from contact part;Starting switch 9 and the control unit on the clamp electric connection;

[0040] Trigger part, trigger part is used for controlling starting switch 9 to send control signal to control unit;

[0041] The transmission part is in transmission cooperation with the trigger part through the contact part;

[0042] The trigger part can control the starting switch 9 to send a control signal to the control unit by contacting the high-temperature steel roll 12 through the contact part.

[0043] The contact part can directly contact the high-temperature steel roll 12, and the contact part transmits the pressure from the high-temperature steel roll 12 to the trigger part through the transmission part by extrusion of the high-temperature steel roll 12, and finally makes the starting switch 9 work and transmits the electric signal to the control unit on the clamp through the trigger part.

[0044] The utility model discloses can avoid starting switch 9 and high-temperature steel roll 12 direct contact work, and further avoid starting switch 9 contact high-temperature damage, prolong the life, and improve the reliability and safety of clamp operation.

[0045] Further, the contact part includes a backing plate 2 fixedly connected to the hook head of the clamp arm 10, and a load-bearing pin 1 is slidably connected to the backing plate 2, wherein the load-bearing pin 1 is vertically arranged and in contact cooperation with the transmission part.

[0046] The backing plate 2 ensures smooth vertical sliding of the load-bearing pin 1 and limits the movement of the load-bearing pin 1.

[0047] Further, the transmission part includes a seesaw 3, the clamp arm 10 is hollow, a pin shaft 4 is fixedly connected to the inner wall of the clamp arm 10, the seesaw 3 is rotationally connected to the pin shaft 4 at the middle part, one end of the seesaw 3 is in contact cooperation with the load-bearing pin 1, and the other end of the seesaw 3 is in transmission cooperation with the trigger part.

[0048] When the load-bearing pin 1 is extruded by the high-temperature steel roll 12, the load-bearing pin 1 moves vertically downward and pushes the seesaw 3 to rotate counterclockwise, the other end of the seesaw 3 presses the trigger part, thereby transmitting the external force received by the load-bearing pin 1 to the trigger part, and the trigger part moves and triggers the starting switch 9 to work.

[0049] Further, the trigger part includes a guide rod 5, two long waist holes 11 are formed in the guide rod 5, two positioning pin shafts 6 are fixedly arranged on the inner wall of the clamp arm 10, the two positioning pin shafts 6 are arranged in the same vertical direction, the guide rod 5 is slidably sleeved on the positioning pin shafts 6 through the long waist holes 11, the bottom end of the guide rod 5 is in transmission cooperation with the end of the seesaw 3 away from the load-bearing pin 1, the top end of the guide rod 5 is in frictional contact with the starting switch 9, and the weight of the load-bearing pin 1 is less than the weight of the guide rod 5.

[0050] The two positioning pin shafts 6 limit the movement of the guide rod 5, and the long waist holes 11 further limit the movement distance of the guide rod 5, thereby ensuring the vertical movement of the guide rod 5 and the effectiveness of triggering the starting switch 9.

[0051] When the hook head on the arm 10 is not hung with the high temperature steel roll 12, because the self weight of the guide rod 5 is greater than the bearing pin 1, it is pried by the rocker 3 to move the bearing pin 1 vertically upward, the extension of the backing plate 2, and the top end of the guide rod 5 is in a separated state with the guide rod 5, once the high temperature steel roll 12 is hung on the hook head on the arm 10, the bearing pin 1 is extruded and shrinks into the backing plate 2, and the rocker 3 is pushed to rotate counterclockwise and overcome the gravity of the guide rod 5, and the guide rod 5 is pried to move upward to trigger.

[0052] Further, in order to ensure the effective transmission of the rocker 3 and the guide rod 5, the fixed shaft 13 is fixedly connected to the end of the rocker 3 away from the bearing pin 1, and the semicircular notch 14 is arranged at the bottom end of the guide rod 5, the semicircular notch 14 is matched with the fixed shaft 13, and the guide rod 5 is rotatably connected to the fixed shaft 13 through the semicircular notch 14.

[0053] Further, in order to prevent the lateral deflection of the guide rod 5, the positioning sleeve one 7 and the positioning sleeve two 8 are arranged on the positioning pin shaft 6, and the guide rod 5 is arranged between the positioning sleeve one 7 and the positioning sleeve two 8.

[0054] The gravity reset trigger device for the lifting appliance has the advantages that: when the device is used, the two ends of the high temperature steel roll 12 are hung on the hook head of the arm 10, the bearing pin 1 is extruded by the high temperature steel roll 12, the bearing pin 1 moves vertically downward, and the rocker 3 is pushed to rotate counterclockwise, the other end of the rocker 3 pries the guide rod 5, the guide rod 5 moves vertically upward under the common limiting of the positioning pin shaft 6, the positioning sleeve one 7 and the positioning sleeve two 8, the top end of the guide rod 5 triggers the start switch 9 to work and transmits the electric signal to the control unit on the clamp, the control unit obtains the electric signal, and it is determined that the high temperature steel roll 12 is hung in place.

[0055] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A gravity return trigger device for a spreader, characterized by, The utility model relates to a kind of high-temperature steel coil contact device, including: Contact part, the contact part is arranged on the hook head of tong arm (10), and the contact part is used to contact with high-temperature steel coil (12); Firing switch (9), the firing switch (9) is arranged at the end of the tong arm (10) away from the contact part;The firing switch (9) is electrically connected with the control unit on clamp; Trigger part, the trigger part is used to control the firing switch (9) to send control signal to the control unit; Transmission part, the contact part is transmission matched with the trigger part by the transmission part; Wherein, the trigger part can control the firing switch (9) to send control signal to the control unit by the high-temperature steel coil (12) contact with the contact part.

2. The gravity-return trigger device for a spreader according to claim 1, wherein The contact part includes fixedly connected on the hook head of tong arm (10) backing plate (2), backing plate (2) is slidably connected with load-bearing pin (1), load-bearing pin (1) is vertically arranged, and load-bearing pin (1) is contact matched with the transmission part.

3. The gravity-return trigger device for a spreader according to claim 2, wherein The transmission part includes flap (3), the tong arm (10) is hollow structure, the inner wall of tong arm (10) is fixedly connected with pin shaft (4), the middle part of flap (3) is rotatably connected on pin shaft (4), one end of flap (3) is contact matched with load-bearing pin (1), and the other end of flap (3) is transmission matched with the trigger part.

4. The gravity-return trigger device for a spreader according to claim 3, wherein The trigger part includes guide rod (5), two long waist holes (11) are formed in guide rod (5), two positioning pin shafts (6) are fixed on the inner wall of tong arm (10), and two positioning pin shafts (6) are collinearly arranged in vertical direction, guide rod (5) is slidably sleeved on positioning pin shaft (6) by long waist hole (11), the bottom end of guide rod (5) is transmission matched with the end of flap (3) away from load-bearing pin (1), the top end of guide rod (5) is frictionally contacted with firing switch (9), and the self-weight of load-bearing pin (1) is less than the self-weight of guide rod (5).

5. The gravity-return trigger device for a spreader according to claim 4, wherein The end of flap (3) away from load-bearing pin (1) is fixedly connected with fixed shaft (13), the bottom end of guide rod (5) is provided with semicircular notch (14), the semicircular notch (14) is matched with fixed shaft (13), and guide rod (5) is rotatably connected on fixed shaft (13) by semicircular notch (14).

6. The gravity-return trigger device for a spreader according to claim 4, wherein Positioning sleeve one (7) and positioning sleeve two (8) are arranged on positioning pin shaft (6), and guide rod (5) is arranged between positioning sleeve one (7) and positioning sleeve two (8).

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