Precise adjustable travel switch for winch type gate hoist

Abstract

The utility model relates to a precise adjustable travel switch for a winch type gate hoist, which comprises a mounting seat, a lead screw connected onto the mounting seat, a cam slider connected onto the lead screw, a limit rod arranged above or below the lead screw and used for limiting rotation of the cam slider, and scales arranged on two sides of the lead screw respectively. A plurality of verniers are arranged on the two scales, an upper limiting switch, a locking switch, a locking switch, an unlocking switch and a lower limiting switch which can be matched with the cam sliding block are arranged on the verniers respectively, and the locking switch and the locking switch are located between the upper limiting switch and the lower limiting switch and used for limiting the opening and closing height of the gate; wherein the vernier of the upper limit switch, the vernier of the locking switch and the vernier of the locking switch are arranged on the scale on one side of the lead screw, and the vernier of the lower limit switch and the vernier of the unlocking switch are arranged on the scale on the other side of the lead screw. The precise adjustable travel switch has the advantages of being convenient to adjust, high in limiting precision, reliable to use and the like.

Description

Technical Field

[0001] The utility model relates to the field of hoists, in particular to a precision adjustable travel switch for a winch-type gate hoist. Background Art

[0002] When the winch hoist is used for the gate, a limiter is set to protect the gate structure. The existing limiters have problems such as inaccurate limit and inconvenient limit height adjustment. Utility Model Content

[0003] In order to make up for the deficiencies of the prior art, the utility model provides a precision adjustable travel switch for a winch-type gate opening and closing machine, which has the advantages of convenient adjustment, high limit accuracy, reliable use, and the like.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A precision adjustable travel switch for a winch-type gate opening and closing machine, comprising a mounting seat, a lead screw connected to the mounting seat, a gear connected to one end of the lead screw, a cam slider connected to the lead screw, a limit rod for limiting the rotation of the cam slider connected to the mounting seat above or below the lead screw, a scale provided on the mounting seats on both sides of the lead screw, a plurality of cursors provided on the two scales, an upper limit switch, a locking switch, a locking switch, an unlocking switch and a lower limit switch respectively provided on the plurality of cursors that can cooperate with the cam slider, the locking switch and the locking switch being located between the upper limit switch and the lower limit switch, so as to limit the gate opening and closing height;

[0006] Among them, the cursor of the upper limit switch, the cursor of the lock switch and the cursor of the lock switch are arranged on the scale on one side of the screw, and the cursor of the lower limit switch and the cursor of the unlocking switch are arranged on the scale on the other side of the screw, so that the unlocking switch can be moved to the corresponding position of the lock switch or the lock switch to cooperate with unlocking.

[0007] Preferably, two upper limit switches are provided on the cursor on which the upper limit switch is installed, and two lower limit switches are provided on the cursor on which the lower limit switch is installed. The two upper limit switches and the two lower limit switches are respectively provided with an alarm switch and a power-off switch.

[0008] Preferably, a protective cover is also provided on the mounting base.

[0009] Preferably, the mounting base is also provided with a toggle switch to control the debugging state and the working state of the travel switch; the mounting base is also provided with indicator lights corresponding to the two states.

[0010] The utility model adopts the above technical solution, and has the advantages that: the precision adjustable travel switch is not only convenient to install in terms of structure, but also has a short reset stroke and is very convenient to adjust through the cooperation of a ruler and a vernier; in terms of function, it not only has a high limit accuracy, but also can better protect the gate and has a high reliability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of one embodiment of the utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of the structure after the protective cover is installed.

[0013] In the figure, 1. mounting base, 2. lead screw, 3. gear, 4. cam slider, 5. limit rod, 6. scale, 7. upper limit switch, 8. lock switch, 9. lock switch, 10. unlock switch, 11. lower limit switch, 12. toggle switch, 13. protective cover. DETAILED DESCRIPTION

[0014] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0015] like Figure 1-2 As shown, in this embodiment, the precision adjustable travel switch for the winch-type gate opening and closing machine includes a mounting seat 1, a lead screw 2 is connected to the mounting seat 1, one end of the lead screw 2 is connected to a gear 3, a cam slider 4 is connected to the lead screw 2, and a limit rod 5 for limiting the rotation of the cam slider 4 is connected to the mounting seat 1 above or below the lead screw 2, and a scale 6 is respectively provided on the mounting seats 1 on both sides of the lead screw 2, and numbers are marked on the scales. A plurality of cursors are provided on the two scales 6, and an upper limit switch 7, a locking switch 8, a locking switch 9, an unlocking switch 10 and a lower limit switch 11 that can independently cooperate with the cam slider are respectively provided on the multiple cursors, and the locking switch 8 and the locking switch 9 are located between the upper limit switch 7 and the lower limit switch 11 to limit the gate opening and closing height;

[0016] Among them, the cursor of the upper limit switch 7, the cursor of the lock switch 8 and the cursor of the lock switch 9 are arranged on the scale on one side of the screw, and the cursor of the lower limit switch 11 and the cursor of the unlocking switch 10 are arranged on the scale on the other side of the screw 2, so that the unlocking switch 10 can be moved to the corresponding position of the lock switch 8 or the lock switch 9 to cooperate with unlocking.

[0017] Furthermore, two upper limit switches are provided on the cursor of the upper limit switch 7, and two lower limit switches are provided on the cursor of the lower limit switch 11. The two upper limit switches and the two lower limit switches are respectively provided with an alarm switch and a power-off switch to form extreme position protection.

[0018] Furthermore, in order to protect the lead screw and various switch structures, a protective cover 13 is provided on the mounting seat, and the protective cover can specifically be a transparent cover.

[0019] Furthermore, for convenience, a toggle switch 12 is provided on the mounting base 1 to control the debugging state and working state of the travel switch; the mounting base is also provided with indicator lights corresponding to the two states, for example, when the debugging state is on, the indicator light is on; when the working state is off, the indicator light is off.

[0020] Principle of use: When the travel switch is used on the hoist gate opening and closing machine, the gear 3 is connected to the drum shaft, and the drum shaft (or the rotating shaft of the reducer) drives the gear outside the precision travel switch to rotate, and the cam slider 4 on the screw also moves accordingly. When it reaches a certain position, the flange point of the cam slider 4 contacts the switch at the corresponding position to make it operate. Specifically, the upper limit switch 7 and the lower limit switch 11 are protection switches, which are adjusted to the limit positions of the gate lifting and lowering respectively to prevent the gate from exceeding the limit position and causing damage. The middle lock switch 8 is the stop position when the gate rises to a certain height, and the locking switch 9 is the stop position when the gate drops to a certain height. Since each switch is installed on the vernier, the movement state and tightening state of each switch can be adjusted by adjusting the tightness of the vernier screw.

[0021] The debugging process of the travel switch for the first time or after maintenance is as follows: first turn on the toggle switch 12 to make the travel switch reach the debugging state. At this time, the indicator light is on, and the screw rotates faster in the debugging state, so as to facilitate and quickly complete the debugging work. During debugging, the gate hook is raised or lowered to a certain height from the limit position, and then the screw is driven to rotate, and the cam slider 4 on it will rise or fall accordingly. When the cam slider 4 encounters the locking switch 9 or the locking switch 8, the cam slider 4 stops and the two switches are considered normal. By moving the unlocking switch 10 to the other side of the cam slider 4, the cam slider can be unlocked to allow it to continue to move. When the cam slider moves to the upper limit switch 7 or the lower limit switch 11, as the cam slider 4 moves, an alarm is first sounded and then the power is cut off for protection, to force the cam slider to stop. Regarding the locking switch and the locking switch, the specific positions of the two can be adjusted according to the needs of the gate, and the unlocking switch needs to be fixed with other switches in an offset position.

[0022] Working process of the travel switch: After debugging, turn off the toggle switch 12, and the travel switch reaches the working state. At this time, it can be put into normal operation after several rounds of empty and full-load tests. When the gate needs to be opened, the lock switch can be adjusted by the vernier caliper reading to achieve accurate and adjustable limit height when the gate is not opened; when the gate needs to be closed, the lock switch can be adjusted by the vernier caliper reading to accurately adjust the limit to the appropriate position when the gate does not move.

[0023] The above-mentioned precision adjustable travel switch is not only easy to install and adjust, but also has the advantages of high limit accuracy, short reset stroke, and high reliability.

[0024] The above specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0025] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A precision adjustable travel switch for a winch-type gate hoist, characterized in that: It includes a mounting seat, a lead screw is connected to the mounting seat, a gear is connected to one end of the lead screw, a cam slider is connected to the lead screw, a limit rod for limiting the rotation of the cam slider is connected to the mounting seat above or below the lead screw, a scale is respectively provided on the mounting seats on both sides of the lead screw, a plurality of cursors are respectively provided with an upper limit switch, a locking switch, a locking switch, an unlocking switch and a lower limit switch that can cooperate with the cam slider, the locking switch and the locking switch are located between the upper limit switch and the lower limit switch, so as to limit the opening and closing height of the gate; Among them, the cursor of the upper limit switch, the cursor of the lock switch and the cursor of the lock switch are arranged on the scale on one side of the screw, and the cursor of the lower limit switch and the cursor of the unlocking switch are arranged on the scale on the other side of the screw, so that the unlocking switch can be moved to the corresponding position of the lock switch or the lock switch to cooperate with unlocking.

2. The precise adjustable travel switch for the winch gate hoist according to claim 1 is characterized in that: Two upper limit switches are arranged on the cursor on which the upper limit switch is installed, and two lower limit switches are arranged on the cursor on which the lower limit switch is installed. The two upper limit switches and the two lower limit switches are respectively provided with an alarm switch and a power-off switch.

3. The precise adjustable travel switch for the winch gate hoist according to claim 1 is characterized in that: A protective cover is also provided on the mounting seat.

4. The precise adjustable travel switch for the winch gate hoist according to claim 1 is characterized in that: The mounting base is also provided with a toggle switch to control the debugging state and the working state of the travel switch; the mounting base is also provided with indicator lights corresponding to the two states.

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