Device for accurately positioning position of cam of master switch

Abstract

The utility model discloses a device for accurately positioning the position of a cam of a master switch, which comprises a switch seat and a cam, a replacement mechanism is arranged on the surface of the switch seat and used for accurately replacing the cam, the replacement mechanism comprises a positioning unit and is arranged in the switch seat and used for accurately positioning the cam, and the positioning unit comprises a left positioning plate and a right positioning plate. The left positioning plate is connected with a right positioning plate through a magnetic attraction assembly. According to the device for accurately positioning the position of the cam of the master switch, when the cam is installed, replaced and maintained, the positioning unit is used for rapidly measuring the angle of the cam so as to prevent the cam from working in a high-temperature environment for a long time; the cam can be quickly maintained and replaced only by placing the cam according to the angle when the cam is dismounted for measurement and fixing the cam through the bolt, so that the situation that a large amount of time is spent on adjusting the angle of the mounted cam is avoided, and meanwhile, the injury to workers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a device for accurately positioning the position of a master switch cam. Background Art

[0002] The master switch is a structure used for cam reversing.

[0003] Referring to Chinese patent: CN219637085U (air exchanger), in order to solve the problem of troublesome operation in the prior art, the above patent proposes a solution by setting up a motor to achieve the control of two valves.

[0004] The above patent realizes the control of two valves by setting a motor, but in the prior art, the reversing in the working process is completed by the action of the main switch, motor, reducer, chain and connecting mechanism, which will act more than 70 times in 24 hours a day. If the cam is damaged or the connecting shaft is broken during use, it will seriously affect the process parameter control and environmental protection flue gas emission requirements. In the prior art, maintenance personnel use a ruler to measure and locate the cam position, but because there is no reference point and the working environment temperature is too high, even if it is debugged to the appropriate position, it takes too much time. The working environment is a limited space and the ambient temperature reaches 60℃-70℃. Once the main switch fails and is damaged, the maintenance personnel will spend time and effort in the high temperature environment and seriously affect the production process control indicators. For this reason, the utility model provides a device for accurately locating the cam position of the main switch. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a device for accurately locating the position of the cam of a master switch, which solves the problem that the prior art is inconvenient for rapid positioning during maintenance, resulting in time-consuming and labor-intensive maintenance.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a device for accurately locating the position of a master switch cam, comprising a switch seat and a cam, wherein a replacement mechanism is provided on the surface of the switch seat for accurately replacing the cam, and the replacement mechanism comprises:

[0007] A positioning unit is arranged inside the switch seat for accurate positioning of the cam, the positioning unit comprises a left positioning plate, and the left positioning plate is connected to the right positioning plate through a magnetic attraction component, and the surfaces of the left positioning plate and the right positioning plate are both provided with scales;

[0008] A clamping unit is arranged at the installation position of the left positioning plate and the right positioning plate;

[0009] The conversion unit is arranged inside the switch seat and is used for replacing the cam.

[0010] Preferably, the magnetic attraction assembly comprises a receiving slot and a magnet, the receiving slot is opened on the side surfaces of the left positioning plate and the right positioning plate, and the magnet is fixed on the surface of the receiving slot.

[0011] Preferably, the clamping unit comprises a clamping socket and a switch spindle, the clamping socket is provided in the surface center area of ​​the left positioning plate and the right positioning plate, and the clamping socket is clamped with the switch spindle.

[0012] Preferably, the conversion unit comprises a shaft body, the shaft body is rotatably connected inside the switch seat, and the cam is connected to the shaft body via a mounting assembly.

[0013] Preferably, the mounting assembly comprises bolts and a cam plate, the cam plate is mounted on the surface of the shaft body, the cam is connected to the cam plate via bolts, and the switch spindle is connected to the switch seat via a linkage assembly.

[0014] Preferably, the linkage assembly includes a linkage rod and a sleeve, the linkage rod is installed inside the switch seat, a hole is opened on the surface of the sleeve, the hole is slidably connected to the linkage rod, and the sleeve is rotatably connected to the top of the switch main shaft.

[0015] Beneficial Effects

[0016] The utility model provides a device for accurately locating the position of the main switch cam. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The device for accurately locating the position of the cam of the main switch uses a positioning unit to quickly measure the angle of the cam in order to avoid working in a high-temperature environment for a long time when installing, replacing, and repairing the cam. When replacing the cam, it is only necessary to place the cam according to the angle when the cam was removed for measurement and fix it with bolts to achieve rapid repair and replacement of the cam, thereby avoiding spending a lot of time to adjust the angle of the cam after installation, and also reducing the harm to the workers.

[0018] (2) The device for accurately locating the position of the main switch cam is provided by placing a left locating plate and a right locating plate on both sides of the switch main shaft, and splicing them together so that they can fit with the switch main shaft and achieve angle fixation under the action of magnets. At this time, the groove formed by the gap between the left locating plate and the right locating plate will have a protruding point of the cam to form a fixed angle. When removing and installing the cam, quick installation can be achieved according to this angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the positioning unit structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the conversion unit structure of the utility model.

[0022] In the figure: 1-switch seat, 2-magnetic suction assembly, 21-storage slot, 22-magnet, 3-positioning unit, 31-left positioning plate, 32-right positioning plate, 33-scale, 4-clamping unit, 41-bayonet, 42-switch spindle, 5-conversion unit, 51-shaft body, 6-installation assembly, 61-bolt, 62-cam plate, 7-linkage assembly, 71-linking rod, 72-sleeve, 9-cam. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-3 , the utility model provides two technical solutions:

[0025] Embodiment 1

[0026] A device for accurately locating the position of a master switch cam comprises a switch seat 1 and a cam 9. The switch seat 1 is a basin. A replacement mechanism is provided on the surface of the switch seat 1 for accurately replacing the cam 9. The replacement mechanism comprises:

[0027] The positioning unit 3 is arranged inside the switch seat 1 for accurate positioning of the cam 9. The positioning unit 3 includes a left positioning plate 31. When installing, replacing and repairing the cam, in order to avoid working in a high temperature environment for a long time, the positioning unit 3 is used to quickly measure the angle of the cam. When replacing the cam, it is only necessary to place the cam according to the angle when the cam is removed for measurement and fix it by bolts to achieve rapid maintenance and replacement of the cam, thereby avoiding spending a lot of time to adjust the angle of the cam after installation, and also reducing the harm to the staff. The left positioning plate 31 and the right positioning plate 32 are both semicircular and form a circle after being spliced ​​by magnets. There is a groove formed by a gap between the left positioning plate 31 and the right positioning plate 32, and the left positioning plate 31 is connected to the right positioning plate 32 through the magnetic suction component 2, and the surfaces of the left positioning plate 31 and the right positioning plate 32 are both provided with scales 33;

[0028] The clamping unit 4 is arranged at the installation position of the left positioning plate 31 and the right positioning plate 32;

[0029] The conversion unit 5 is arranged inside the switch seat 1 and is used for replacing the cam 9 .

[0030] Embodiment 2

[0031] The main difference from the first embodiment is:

[0032] A device for accurately locating the position of a main switch cam, the magnetic attraction component 2 includes a storage groove 21 and a magnet 22, after the magnet 22 is installed, the left positioning plate 31 and the right positioning plate 32 attract each other, the storage groove 21 is opened on the side of the left positioning plate 31 and the right positioning plate 32, by placing the left positioning plate 31 and the right positioning plate 32 on both sides of the switch main shaft 42, and splicing them, they will fit with the switch main shaft 42 and achieve angle fixing under the action of the magnet, at this time, the groove formed by the gap between the left positioning plate 31 and the right positioning plate 32 will have a protruding point of the cam to form a fixed angle, when disassembling and installing the cam, quick installation can be achieved according to this angle, the magnet 22 is fixed on the surface of the storage groove 21, the clamping unit 4 includes a bayonet 41 and a switch main shaft 42, the bayonet 41 and the switch main shaft 42 have the same shape, can be directly slidably clamped, the bayonet 41 is opened on the left positioning plate 31 The center area of ​​the surface of the right positioning plate 32, the bayonet 41 is engaged with the switch main shaft 42, the conversion unit 5 includes a shaft body 51, the shaft body 51 is rotatably connected inside the switch seat 1, the cam 9 is connected to the shaft body 51 through the mounting assembly 6, the mounting assembly 6 includes a bolt 61 and a cam plate 62, the switch main shaft 42 is fixed to the top of the shaft body 51, the cam plate 62 is mounted on the surface of the shaft body 51, the cam 9 is connected to the cam plate 62 through the bolt 61, the switch main shaft 42 is connected to the switch seat 1 through the linkage assembly 7, the linkage assembly 7 includes a connecting rod 71 and a sleeve 72, the connecting rod 71 is mounted inside the switch seat 1, a hole is opened on the surface of the sleeve 72, the hole is slidably connected to the connecting rod 71, the hole is slidably connected to the connecting rod 71, thereby realizing the fixing of the position of the sleeve 72 to avoid the rotation of the switch main shaft 42 driving the sleeve 72 to rotate, and the sleeve 72 is rotatably connected to the top of the switch main shaft 42.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] During work, when installing, replacing and repairing the cam, in order to avoid working in a high temperature environment for a long time, the positioning unit 3 is used to quickly measure the cam angle. When replacing the cam, you only need to place the cam according to the angle when the cam is removed for measurement and fix it with bolts to achieve quick repair and replacement of the cam, thereby avoiding spending a lot of time to adjust the angle of the cam after installation, and also reducing the harm to the staff. By placing the left positioning plate 31 and the right positioning plate 32 on both sides of the switch main shaft 42 and splicing them under the action of the magnet, they will fit with the switch main shaft 42 and achieve angle fixing. At this time, the groove formed by the gap between the left positioning plate 31 and the right positioning plate 32 will have the protruding point of the cam to form a fixed angle, and the cam can be quickly installed according to this angle when disassembling and installing the cam.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for accurately locating the position of a master switch cam, comprising a switch seat (1) and a cam (9), characterized in that: The surface of the switch seat (1) is provided with a replacement mechanism for accurately replacing the cam (9), and the replacement mechanism comprises: A positioning unit (3) is arranged inside the switch seat (1) and is used for accurately positioning the cam (9), wherein the positioning unit (3) comprises a left positioning plate (31), and the left positioning plate (31) is connected to a right positioning plate (32) via a magnetic attraction component (2), and scales (33) are provided on the surfaces of the left positioning plate (31) and the right positioning plate (32); A clamping unit (4) is arranged on the installation and placement of the left positioning plate (31) and the right positioning plate (32); The conversion unit (5) is arranged inside the switch seat (1) and is used for replacing the cam (9).

2. The device for accurately locating the position of the master switch cam according to claim 1, characterized in that: The magnetic attraction component (2) comprises a receiving groove (21) and a magnet (22); the receiving groove (21) is provided on the side surfaces of a left positioning plate (31) and a right positioning plate (32); and the magnet (22) is fixed on the surface of the receiving groove (21).

3. The device for accurately locating the position of the master switch cam according to claim 1, characterized in that: The clamping unit (4) comprises a clamping port (41) and a switch main shaft (42); the clamping port (41) is provided in the central area of ​​the surface of the left positioning plate (31) and the right positioning plate (32); and the clamping port (41) is clamped with the switch main shaft (42).

4. The device for accurately locating the position of the master switch cam according to claim 3, characterized in that: The conversion unit (5) comprises a shaft body (51), the shaft body (51) is rotatably connected inside the switch seat (1), and the cam (9) is connected to the shaft body (51) via a mounting assembly (6).

5. The device for accurately locating the position of the master switch cam according to claim 4, characterized in that: The mounting assembly (6) comprises a bolt (61) and a cam plate (62); the cam plate (62) is mounted on the surface of the shaft body (51); the cam (9) is connected to the cam plate (62) via the bolt (61); and the switch main shaft (42) is connected to the switch seat (1) via a linkage assembly (7).

6. The device for accurately locating the position of the master switch cam according to claim 5, characterized in that: The linkage assembly (7) comprises a linkage rod (71) and a shaft sleeve (72); the linkage rod (71) is installed inside the switch seat (1); a hole is provided on the surface of the shaft sleeve (72); the hole is slidably connected to the linkage rod (71); and the shaft sleeve (72) is rotatably connected to the top of the switch main shaft (42).

Images