Bidirectional measurement protection equipment for gate hoist

Abstract

The utility model provides bidirectional measurement protection equipment for a gate hoist. The bidirectional measurement protection equipment comprises a transmission mechanism and a tensioning mechanism, the transmission mechanism comprises a transmission gear and a limiting measurement seat, and the transmission gear is connected with the limiting measurement seat through a transmission shaft and can drive the limiting measurement seat to reciprocate between the travel switch groups after being driven; the tensioning mechanism comprises a tensioning arm, the tensioning arm is rotationally connected with the base, a mounting frame is constructed at the bottom of the base, and the transmission gear is coaxially connected with an encoder on the tensioning arm; the device has the functions of stroke measurement and gate position measurement at the same time, the safety guarantee of double mechanical counting measurement is achieved, the actual lifting height of the gate is scaled in an equal proportion mode through the transmission mechanism, the upper limiting switch and the lower limiting switch do not need to be installed at the actual lifting height position, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distance measurement, in particular to a bidirectional measurement protection device for a gate hoist. Background Art

[0002] The gate hoist, also known as the hoist gate, is a large-scale hydraulic machinery product. The gate hoist is related to the normal operation of hydraulic structures. In addition to meeting the design requirements of general lifting machinery, it is of special significance to work safely and reliably and to operate flexibly and conveniently.

[0003] The gate hoist needs to be equipped with protective measuring equipment when in use, that is, gate position measurement (the movement between the starting position and the end position can provide real-time position data) or stroke measurement (position data is provided only when the gate reaches the starting position or the end position) to avoid the gate being blocked by foreign objects and unable to move during the lifting process while the motor is still outputting;

[0004] However, most of the existing corresponding protection and measurement equipment for gate hoists are unidirectional, that is, they can only perform gate position measurement or stroke measurement, which makes the gate hoists less safe when in use. Utility Model Content

[0005] In view of this, the problem to be solved by the utility model is to provide a bidirectional measurement protection device for a gate hoist.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A bidirectional measuring and protecting device for a gate hoist, comprising a transmission mechanism and a tensioning mechanism;

[0008] The transmission mechanism includes a transmission gear and a limit measuring seat. The transmission gear is connected to the limit measuring seat through a transmission shaft. After being driven, it can drive the limit measuring seat to reciprocate between the travel switch groups. The tensioning mechanism includes a tensioning arm. The tensioning arm is rotatably connected to the base. A mounting frame is constructed at the bottom of the base. The transmission gear is coaxially connected to the encoder on the tensioning arm.

[0009] The encoder is fixedly installed on the tensioning arm transversely, and the output end of the encoder passes through the tensioning arm and is coaxially fixedly connected with the transmission gear.

[0010] The transmission gear is a double-layer tooth structure, wherein the outer large teeth are used for meshing connection with the driving source component, and the inner small teeth are meshed connection with the secondary gear coaxial with the transmission shaft.

[0011] The transmission shaft is a screw rod structure, and the limit measuring seat is a corresponding screw rod nut structure or is installed on the screw rod nut.

[0012] A transmission sleeve is fixedly mounted on the transmission shaft, and at least two groups of annular grooves are constructed on the outer circumferential surface of the transmission sleeve. A delayed reversing smooth rod is slidably connected in the annular groove. Openings connected to the annular grooves are provided on both axial end surfaces of the transmission sleeve to allow the delayed reversing smooth rod to enter and exit.

[0013] The annular groove includes a straight thread groove section and an oblique thread groove section, the straight thread groove section is coaxially arranged with the transmission sleeve, the oblique thread groove section is designed in an oblique spiral on the outer periphery of the transmission sleeve, and the opening is constructed on the oblique thread groove section;

[0014] One end of the reversing plate is arranged facing the annular groove, and the delayed reversing smooth rod is vertically installed on the reversing plate and arranged in a circle on the reversing plate, one group of the delayed reversing smooth rods is connected to the limit measuring seat, and the upper limit switch and the lower limit switch of the travel switch group are installed on the moving path of the delayed reversing smooth rod.

[0015] The tensioning arm is also provided with a transverse strip waist groove, and a plurality of threaded holes are provided on the base along the extension direction of the transverse strip waist groove, and the gear adjustment screw passes through the transverse strip waist groove and is connected with the threaded hole.

[0016] The advantages and positive effects of the utility model are:

[0017] (1) This bidirectional measuring device has the functions of stroke measurement and gate position measurement at the same time. It can collect and compare the data of stroke measurement and gate position measurement to achieve the safety guarantee of dual mechanical counting measurement. The stroke measurement and gate position measurement data obtained can also be compared and analyzed with the data of the voltage overload protection system of the gate hoist, which increases the safety of the gate hoist.

[0018] (2) The actual lifting height of the gate is proportionally scaled by using a transmission mechanism, so that the upper limit switch and the lower limit switch do not need to be installed at the actual lifting height position, and the stroke measurement can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a structural diagram of a screw gate hoist with a bidirectional measuring device;

[0022] Figure 2 This is a first-view structural diagram of a bidirectional measurement protection device for a gate hoist according to the utility model under the first design scheme;

[0023] Figure 3 This is a second perspective structural diagram of a bidirectional measurement protection device for a gate hoist according to the utility model under the first design scheme;

[0024] Figure 4 It is a third-view structural diagram of a bidirectional measurement protection device for a gate hoist according to the utility model under the first design scheme;

[0025] Figure 5 This is a transmission sleeve structure diagram of a bidirectional measurement protection device for a gate hoist according to the utility model under the second design scheme;

[0026] Figure 6 This is a structural diagram of a bidirectional measurement protection device for a gate hoist according to the utility model under the second design scheme;

[0027] Figure 7 It is a structural diagram of a winch-type gate hoist with a bidirectional measuring device;

[0028] In the figure: a tensioning arm 11, an elastic member 12, a transmission gear 21, a limit measuring seat 22, a transmission shaft 23, a secondary gear 24, an annular groove 25, a straight thread groove section 251, an oblique thread groove section 252, an opening 253, a delayed reversing smooth rod 26, a reversing plate 27, a seat bearing 28, a transmission sleeve 29, a travel switch group 3, an encoder 4, a base 5, a hanging hole 51, a lifting screw 6, a driving gear 7, a mounting frame 8, and a fastening bolt 81. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figures 1 to 4 As shown, the utility model provides a bidirectional measurement protection device for a gate hoist, including a transmission mechanism and a tensioning mechanism;

[0031] The transmission mechanism includes a transmission gear 21 and a limit measuring seat 22. The transmission gear 21 is connected to the limit measuring seat 22 through a transmission shaft 23. When the transmission gear 21 is connected to a driving source component that is started synchronously with the gate, the limit measuring seat 22 can be driven to move back and forth between the travel switch groups 3. When the gate reaches the highest or lowest limit position, the limit measuring seat 22 also synchronously contacts the travel switch group 3, thereby triggering the upper limit switch or the lower limit switch of the travel switch group 3 to achieve travel measurement.

[0032] The tensioning mechanism includes a tensioning arm 11 and an elastic member 12 hooked and connected to the tensioning arm 11, the transmission gear 21 is coaxially connected to the encoder 4 on the tensioning arm 11, the tensioning arm 11 is rotatably connected to the base 5, and a mounting frame 8 is constructed at the bottom of the base 5. The mounting frame 8 is threadedly connected to the upper cover plate of the screw-type gate hoist after the fastening bolt 81 is passed through the mounting frame 8, thereby realizing the fixation of the bidirectional measuring device. With the rotation of the transmission gear 21, the encoder 4 also counts synchronously, thereby realizing the gate position measurement. The elastic member 12 is used to drive the tensioning arm 11 to move in the direction close to the driving source component, so that the transmission gear 21 is tightly meshed with the driving source component, and when the installation position of the driving source component is offset, it plays a role in position compensation;

[0033] The gate hoist adopts screw type opening and closing, and the driving source is the lifting screw 6, which is meshed and connected with the transmission gear 21;

[0034] If the gate hoist adopts winch type opening and closing, the driving source is the driving gear 7 coaxially connected to the rotating shaft of the gate hoist, the driving gear 7 is meshed and connected with the transmission gear 21, and the fastening bolt 81 is threadedly connected with the fixing frame of the winch type opening and closing after passing through the mounting frame 8, thereby realizing the fixation of the bidirectional measuring device;

[0035] Compared with the existing technology, this bidirectional measuring device has the functions of stroke measurement and gate position measurement at the same time, and can collect and compare the data of stroke measurement and gate position measurement to achieve the safety guarantee of dual mechanical counting measurement. It can also compare and analyze the data of stroke measurement and gate position measurement with the data of the voltage overload protection system of the gate hoist, thereby increasing the safety of the gate hoist;

[0036] The transmission mechanism is creatively used to proportionally scale the actual lifting height of the gate, so that the upper limit switch and the lower limit switch do not need to be installed at the actual lifting height position, and the stroke measurement can also be achieved.

[0037] Specifically, the encoder 4 is fixedly installed transversely on the tensioning arm 11, and its output end passes through the tensioning arm 11 and is coaxially fixedly connected with the transmission gear 21. When the transmission gear 21 rotates, the encoder 4 counts synchronously and measures the actual height position of the gate in real time.

[0038] Specifically, the transmission gear 21 is a double-layer tooth structure, wherein the outer large teeth are used for meshing connection with the driving source component, and the inner small teeth are meshed connection with the secondary gear 24 coaxial with the transmission shaft 23 .

[0039] In this technical solution, two solutions are designed to drive the limit measuring seat 22 to move; wherein, the first solution is that the transmission shaft 23 and the limit measuring seat 22 are started synchronously, and the second solution is that the transmission shaft 23 and the limit measuring seat 22 are started asynchronously;

[0040] like Figure 3 to Figure 4 As shown, in scheme one, the transmission shaft 23 is a screw structure, which is installed on the base 5 through a seat bearing, the limit measuring seat 22 is a corresponding screw nut structure or is installed on the screw nut, the upper limit switch and the lower limit switch of the travel switch group 3 are diagonally installed on the sides of the starting end and the end of the travel of the two groups of limit measuring seats 22, and the two groups of limit measuring seats 22 are installed front and back on the transmission shaft 23 of the screw structure; when the gate reaches the limit position of the highest point, one group of limit measuring seats 22 touches the upper limit switch to achieve the highest point measurement, when the gate descends, the transmission shaft 23 reverses synchronously, when the gate reaches the limit position of the lowest point, the other group of limit measuring seats 22 touches the lower limit switch to achieve the lowest point measurement.

[0041] like Figures 5 and 6 As shown, in scheme 2, a transmission sleeve 29 is fixedly mounted on the transmission shaft 23, and the outer large teeth of the transmission gear 21 are of a semi-tooth structure, that is, the entire circumferential surface of the outer large teeth has only partial teeth, thereby intermittently driving the secondary gear 24 coaxially connected to the transmission shaft 23 to rotate, and at least two groups of annular grooves 25 are constructed on the outer circumferential surface of the transmission sleeve 29, and a delayed reversing smooth rod 26 is slidably connected in the annular groove 25, and the delayed reversing smooth rod 26 is connected to the limit measuring seat 22, and openings 253 connected to the annular groove 25 are opened on both axial end surfaces of the transmission sleeve 29 for the entry and exit of the delayed reversing smooth rod 26, and the annular groove 25 includes a straight thread groove section 251 and an oblique thread groove section 252. The straight thread groove section 251 is coaxially arranged with the transmission sleeve 29, and the oblique thread groove section 252 is designed as an oblique spiral on the outer periphery of the transmission sleeve 29. The opening 253 is constructed on the oblique thread groove section 252. One end of the reversing plate 27 is arranged facing the annular groove 25 and is installed on the seat bearing 28, thereby realizing the rotation of the reversing plate 27. The delayed reversing smooth rod 26 is vertically installed on the reversing plate 27 and arranged in a circle on the reversing plate 27. One group of the delayed reversing smooth rods 26 is connected to the limit measuring seat 22, and the upper limit switch and the lower limit switch of the travel switch group 3 are installed on the moving path of the delayed reversing smooth rod 26;

[0042] When the transmission sleeve 29 rotates, if the delayed reversing smooth rod 26 is in the straight thread groove section 251, the transmission sleeve 29 continues to idle relative to the delayed reversing smooth rod 26, so that the delayed reversing smooth rod 26 maintains the current position state. When the delayed reversing smooth rod 26 is in the oblique thread groove section 252, under the pushing action of the oblique thread groove section 252, the delayed reversing smooth rod 26 is offset along the extension direction of the oblique thread groove section 252 and moves out from the outlet. At the same time, an adjacent group of delayed reversing smooth rods 26 enters the transmission sleeve 29 from the entrance and repeats the above action, thereby the limit measuring seat 22 is asynchronously and intermittently started relative to the transmission shaft 23. When the gate reaches the highest or lowest limit position, the delayed reversing smooth rod 26 connected to the limit measuring seat 22 touches the upper limit switch or the lower limit switch on the moving path, thereby realizing the stroke measurement.

[0043] Compared with the design of Scheme 1, the design of Scheme 2 can reduce the overall length of the bidirectional measuring device and is suitable for working environments with limited installation length and space.

[0044] like Figure 1 As shown, specifically, the tensioning arm 11 is rotatably connected to the base 5, the elastic member 12 is a double-headed tension spring, the other end of which is hooked on the base 5, and a plurality of hanging holes 51 corresponding to the elastic member 12 are sequentially opened along the height direction of the tensioning arm 11. By hooking the hanging holes 51 at different height positions, the tightening elastic force when the transmission gear 21 is engaged with the driving source member can be adjusted.

[0045] Specifically, a transverse strip waist groove (not shown in the figure) is also provided on the tensioning arm 11, and a plurality of threaded holes are provided on the base 5 along the extension direction of the transverse strip waist groove. The position of the tensioning arm 11 can be adjusted by screws (not shown in the figure) passing through the transverse strip waist groove and then connecting the threaded holes at different positions. This is suitable for use in working environments with limited installation width and position.

[0046] Specifically, the bidirectional measuring device further includes an outer protective cover shell made of metal material, and the outer protective cover shell is buckled and connected to the base 5 .

[0047] The working principle and working process of the utility model are as follows:

[0048] When the gate opening and closing machine is started, the lifting screw 6 or the driving gear 7 of the gate opening and closing machine synchronously drives the transmission gear 21 to rotate, and the encoder 4 coaxially connected to the transmission gear 21 counts synchronously with the rotation of the transmission gear 21, and measures the actual height position of the gate in real time. At the same time, the transmission gear 21 also drives the transmission shaft 23 to rotate through the secondary gear 24 coaxially connected to the transmission shaft 23. During the rotation of the transmission shaft 23 of the screw structure, the limit measuring seat 22 of the screw nut structure or the limit measuring seat 22 installed on the screw nut moves synchronously along the transmission shaft 23. When the gate reaches the limit position of the highest point, one group of the limit measuring seats 22 touches the upper limit switch to realize the highest point measurement. When the gate descends, the transmission shaft 23 reverses synchronously. When the gate reaches the limit position of the lowest point, another group of the limit measuring seats 22 touches the lower limit switch to realize the lowest point measurement, thereby realizing the function of stroke measurement.

[0049] The above embodiments of the utility model are described in detail, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the utility model should still fall within the scope of this patent.

Claims

1. A bidirectional measurement and protection device for a gate hoist, characterized in that: Including transmission mechanism and tensioning mechanism; The transmission mechanism comprises a transmission gear (21) and a limit measuring seat (22); the transmission gear (21) is connected to the limit measuring seat (22) via a transmission shaft (23) and can drive the limit measuring seat (22) to move back and forth between the travel switch groups (3) after being driven; the tensioning mechanism comprises a tensioning arm (11), the tensioning arm (11) is rotatably connected to the base (5), a mounting frame (8) is constructed at the bottom of the base (5), and the transmission gear (21) is coaxially connected to an encoder (4) on the tensioning arm (11).

2. A bidirectional measurement and protection device for a gate hoist according to claim 1, characterized in that: The encoder (4) is transversely fixedly mounted on the tensioning arm (11), and its output end passes through the tensioning arm (11) and is coaxially fixedly connected to the transmission gear (21).

3. A bidirectional measurement and protection device for a gate hoist according to claim 1, characterized in that: The transmission gear (21) is a double-layer tooth structure, wherein the outer large teeth are used for meshing connection with the driving source component, and the inner small teeth are meshing connection with the secondary gear (24) coaxial with the transmission shaft (23).

4. A bidirectional measurement and protection device for a gate hoist according to claim 3, characterized in that: The transmission shaft (23) is a screw rod structure, and the limit measuring seat (22) is a corresponding screw rod nut structure or is installed on a screw rod nut.

5. A bidirectional measurement and protection device for a gate hoist according to claim 3, characterized in that: A transmission sleeve (29) is fixedly mounted on the transmission shaft (23), and at least two groups of annular grooves (25) are constructed on the outer peripheral surface of the transmission sleeve (29). A delayed reversing smooth rod (26) is slidably connected in the annular groove (25). Openings (253) communicating with the annular groove (25) are provided on both axial end surfaces of the transmission sleeve (29) for the delayed reversing smooth rod (26) to enter and exit.

6. A bidirectional measurement and protection device for a gate hoist according to claim 5, characterized in that: The annular groove (25) comprises a straight thread groove section (251) and an oblique thread groove section (252), the straight thread groove section (251) and the transmission sleeve (29) are coaxially arranged, the oblique thread groove section (252) is designed in an oblique spiral on the outer periphery of the transmission sleeve (29), and the opening (253) is constructed on the oblique thread groove section (252); One end of the reversing plate (27) is arranged facing the annular groove (25), and the delayed reversing smooth rods (26) are vertically installed on the reversing plate (27) and arranged in a circle on the reversing plate (27), wherein one group of the delayed reversing smooth rods (26) is connected to the limit measuring seat (22), and the upper limit switch and the lower limit switch of the travel switch group (3) are installed on the moving path of the delayed reversing smooth rods (26).

7. A bidirectional measurement and protection device for a gate hoist according to claim 6, characterized in that: The tensioning arm (11) is also provided with a transverse strip waist groove (111), and a plurality of threaded holes are provided on the base (5) along the extension direction of the transverse strip waist groove (111), and the gear adjustment screw (112) passes through the transverse strip waist groove (111) and is connected to the threaded hole.

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