Micro-motion adjusting assembly of stroke limiter

Abstract

A stroke limiter micro-motion adjusting assembly comprises a cam mechanism which comprises a supporting sleeve, a mounting disc, a bolt, a locking nut, a cam ring and an adjusting shaft, and a polygonal rotating shaft connecting hole is formed in one side of the supporting sleeve; the microswitch mechanism comprises a plurality of microswitches, and each microswitch is correspondingly arranged on one side of the cam ring; the base component comprises a mounting disc fixing opening and a microswitch fixing seat, the cam mechanism is arranged and fixed on the base component through the matching of the mounting disc and the mounting disc fixing opening, and the microswitch fixing seat is used for fixedly arranging the microswitch mechanism. According to the utility model, the cam mechanism and the microswitch assembly are integrally arranged by using the base part, and the support sleeve part is provided with the rotating shaft connecting hole, so that the stroke limiter can be freely disassembled and assembled on a rotating shaft, the mounting structure of the stroke limiter is optimized, and the adjustment of the cam mechanism and the microswitch in the stroke limiter is more accurate and rapid.

Description

Technical Field

[0001] The utility model relates to the field of safety protection devices for large machinery, in particular to a travel limiter micro-motion adjustment component. Background Art

[0002] A travel limiter is a mechanical travel-limiting device widely used in lifting and transportation equipment, elevators, stage equipment, and other fields. The basic operating principle of a travel limiter is that the rotation of a cam drives a microswitch within a contact mechanism to achieve a set position or terminate the equipment's operation. Its main operating structure consists of a cam mechanism and a microswitch. Specifically, the cam mechanism has multiple cams mounted on a rotating shaft. As the shaft rotates, the cams rotate with it. The cam's rotating convex surface cooperates with the microswitch to control the microswitch's opening and closing, generating both passive and active signal inputs.

[0003] In previous travel limiters, the cam mechanism and the micro switch are usually set separately, which requires the positions of the cam mechanism and the micro switch to be adjusted separately during installation and setting, and the cam mechanism needs to be removed from the rotating shaft. During the disassembly and assembly process, it is easy to cause misalignment errors between the cam mechanism and the micro switch, which affects the normal operation of the travel limiter. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the present invention proposes a stroke limiter micro-adjustment assembly, which sets the cam mechanism and micro-switch in the stroke limiter independently from the rotating shaft as an integral unit, thereby optimizing the internal installation structure of the stroke limiter.

[0005] The technical solution adopted by this utility model is:

[0006] A travel limiter fine-motion adjustment assembly, comprising:

[0007] The cam mechanism includes a supporting sleeve, a mounting plate, a bolt, a locking nut, a plurality of cam rings and an equal number of adjusting shafts, wherein the cam rings are stacked and arranged on the outside of the supporting sleeve, one end of the adjusting shaft extends into the cam ring, and the other end of the adjusting shaft is connected to an adjusting shaft mounting opening on the mounting plate, a bolt mounting opening is provided at the center of the mounting plate, a polygonal rotating shaft connecting hole is provided at the center of one end of the supporting sleeve, and the rotating shaft connecting hole is used to connect to the rotating shaft in the travel limiter, a micro switch mechanism includes a plurality of micro switches, each of which is correspondingly arranged on one side of the cam ring; the rotating shaft connecting hole is connected to the other end of the supporting sleeve and is provided with a bolt connecting hole, a bolt mounting opening is provided at the center of the mounting plate, and the bolt passes through the bolt mounting opening and enters the bolt connecting hole to be matched with the locking nut;

[0008] The base component includes a mounting plate fixing port and a micro switch fixing seat. The cam mechanism is fixed on the base component through the matching arrangement of the mounting plate and the mounting plate fixing port. The micro switch fixing seat is used to fix the micro switch mechanism.

[0009] The shape of the rotating shaft connection hole is a hexagonal prism, the shape of the locking nut is a hexagon, and the locking nut is arranged at the bottom of the rotating shaft connection hole after being connected with the bolt.

[0010] The micro switch fixing seat includes a first micro switch fixing seat and a second micro switch fixing seat, and the width of the second micro switch fixing seat is greater than the width of the first micro switch fixing seat.

[0011] A positioning hole is further provided in the support sleeve, and one end of the adjustment shaft extending toward the cam ring is connected to the support sleeve through the positioning hole.

[0012] A limiting tooth is provided in the mounting opening of the adjusting shaft, and a mounting tooth is provided at one end of the adjusting shaft connected to the mounting plate.

[0013] The portion of the adjusting shaft disposed on the surface of the mounting plate is provided with an operating hole.

[0014] The connecting portion between the adjusting shaft and the supporting sleeve is provided with an elastic reset member.

[0015] The size of the bolt and the lock nut is M4.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention uses a base component to set the cam mechanism and the micro switch assembly as an integral component. At the same time, the cam mechanism in the present invention is separately arranged outside the rotating shaft of the travel limiter, and the rotating shaft connection hole of the support sleeve allows the present invention to be freely assembled and disassembled from the rotating shaft of the travel limiter, which is convenient for the overall disassembly and subsequent maintenance of the travel limiter micro adjustment assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall structural diagram of a travel limiter micro-adjustment component.

[0018] Figure 2 A side view of a travel limiter fine-motion adjustment assembly.

[0019] Figure 3 This is a cross-sectional view of the internal structure of a travel limiter fine-motion adjustment component from a side view perspective.

[0020] Figure 4 A top view of a travel limiter fine-motion adjustment assembly.

[0021] Figure 5 This is a rear view of a travel limiter micro-adjustment assembly.

[0022] Figure 6 This is a schematic diagram of the installation relationship between the adjusting shaft, mounting plate and base component in the cam mechanism.

[0023] Figure 7 Schematic diagram of the structure of the support sleeve.

[0024] Figure 8 It is a front view of the support sleeve.

[0025] Figure 9 This is a schematic diagram showing the corresponding setting relationship between the cam ring and the micro switch.

[0026] In the figure: 1. cam mechanism; 11. supporting sleeve; 111. rotating shaft connecting hole; 112. positioning hole; 113. bolt connecting hole; 12. mounting plate; 121. adjusting shaft mounting opening; 122. bolt mounting opening; 13. adjusting shaft; 131. rotating engaging tooth; 132. mounting tooth; 133. operating hole; 14. cam ring; 15. bolt; 16. locking nut; 17. elastic reset member; 2. micro switch; 3. base component; 31. mounting plate fixing opening; 32. first micro switch fixing seat; 33. second micro switch fixing seat. DETAILED DESCRIPTION

[0027] The structure, function, main features and effects of the present invention are described below with reference to the accompanying drawings.

[0028] like Figures 1 to 8 A travel limiter micro-adjustment assembly includes: a cam mechanism 1, a micro-switch mechanism and a base component 3, wherein the cam mechanism 1 and the micro-switch mechanism are connected to form a whole through the base component 3.

[0029] The cam mechanism 1 includes a support sleeve 11, a mounting plate 12, a bolt 15, a locking nut 16, a plurality of cam rings 14 and an equal number of adjustment shafts 13. The cam rings 14 are stacked on the outside of the support sleeve 11. One end of the adjustment shaft 13 extends into the cam ring 14 and is connected to the support sleeve 11 through a positioning hole 112 provided in the support sleeve 11. The other end of the adjustment shaft 13 is connected to an adjustment shaft mounting opening 121 on the mounting plate 12. A bolt mounting opening 122 is provided in the center of the mounting plate 12, and a bolt connection hole 113 is provided on one side of the support sleeve 11 close to the adjustment shaft 13 and the mounting plate 12. The bolt 15 enters the bolt connection hole 113 through the bolt mounting opening 122 and is connected with the locking nut 16, thereby locking the cam mechanism 1 as a whole.

[0030] A shaft connection hole 111 is provided at the center of the other end of the support sleeve 11. The shaft connection hole 111 is used to connect the shaft in the stroke limiter. The opening of the shaft connection hole 111 is polygonal. The shaft connection hole 111 is connected to the center of the bolt connection hole 113. In this embodiment, in order to match the shape of the stroke limiter shaft, the shaft connection hole 111 is a regular hexagonal prism as a whole, and the shape of the locking nut 16 is also a regular hexagon. After the bolt 15 passes through the bolt connection hole 113, its head is arranged at the bolt mounting port 122, and the end of its screw rod is arranged at the bottom of the shaft connection hole 111. The locking nut 16 is arranged at the shaft connection hole 111 to cooperate with the bolt 15 to lock the cam mechanism 1 as a whole. At this time, the locking nut 16 is also arranged at the bottom of the shaft connection hole 111.

[0031] The adjustment shafts 13 are of varying lengths and are uniformly arranged circumferentially around the center of the mounting plate 12, within the adjustment shaft mounting opening 121. The portion of the adjustment shaft 13 extending into the mating cam ring 14 is equipped with rotating engaging teeth 131 that mate with the inner gear of the cam ring 14. The adjustment shaft 13 can slide forward and backward along its axial direction, driving the cam ring 14 to rotate forward from its initial position to its final position, where it contacts the contacts of the microswitch 2.

[0032] A limiting tooth is provided in the adjusting shaft mounting opening 121, and a mounting tooth 132 is provided at one end of the adjusting shaft 13 connected to the mounting plate 12. When the adjusting shaft 13 is in the initial setting position, the limiting tooth and the mounting tooth 132 can cooperate to form a limiting structure.

[0033] The portion of the adjusting shaft 13 disposed on the mounting plate 12 is provided with an operating hole 133 , and the recess of the operating hole 133 is adapted to the shape of a screwdriver bit.

[0034] The connection portion between the adjusting shaft 13 and the supporting sleeve 11 is provided with an elastic reset member 17, and the elastic reset member 17 is used to reset the adjusting shaft 13 and the cam ring 14 to their initial setting positions. In the present utility model, the elastic reset member 17 is a spring.

[0035] In the present invention, preferably, the bolt and the lock nut are of M4 size.

[0036] The micro switch mechanism includes a plurality of micro switches 2 , and each micro switch 2 is correspondingly arranged on one side of a cam ring 14 .

[0037] The base component 3 includes a mounting plate fixing opening 31 and a micro switch fixing seat. The cam mechanism 1 is fixed to the base component 3 through the matching arrangement of the mounting plate 12 and the mounting plate fixing opening 31. The micro switch fixing seat is used to fix the micro switch mechanism.

[0038] The micro switch fixing seat includes a first micro switch fixing seat 32 and a second micro switch fixing seat 33. The width of the second micro switch fixing seat 33 is greater than that of the first micro switch fixing seat 32. In this embodiment, the width of the micro switch 2 is relatively large. When all the micro switch components are set on one side of the cam mechanism 1, it is difficult to achieve the corresponding setting of each micro switch 2 and each cam ring 14. For this reason, the micro switches 2 in this embodiment are respectively set on two sides of the base component 3 with different widths, so that the cam rings 14 are cross-linked and correspond one-to-one with the micro switches 2 on both sides. Figure 8 In this embodiment, six cam rings 14 are provided. Cam rings 14 are labeled cam ring a through cam ring f according to their distance from mounting plate 12. Correspondingly, six microswitches 2 are provided. Those connected to the first microswitch mounting base 32 are labeled microswitch a1 through microswitch a3, and those connected to the second microswitch mounting base 33 are labeled microswitch b1 through microswitch b3. The position of cam ring a corresponds to microswitch a1, the position of cam ring b corresponds to microswitch b1, the position of cam ring c corresponds to microswitch a2, the position of cam ring d corresponds to microswitch b2, the position of cam ring e corresponds to microswitch a3, and the position of cam ring f corresponds to microswitch b3.

[0039] The present invention uses a base component 3 to set the cam mechanism 1 and the micro switch assembly as an integral component. At the same time, the cam mechanism 1 in the present invention is separately arranged outside the rotating shaft of the travel limiter. The rotating shaft connection hole 111 of the support sleeve 11 allows the present invention to be freely assembled and disassembled from the rotating shaft of the travel limiter, which is convenient for the overall disassembly and subsequent maintenance of the travel limiter micro adjustment assembly.

[0040] The following is the working principle of the present invention: When the stroke limiter micro-adjustment assembly is set in the stroke limiter, the rotating shaft in the stroke limiter is connected to the rotating shaft connection hole 111. When the transmission mechanism connected to the stroke limiter starts to work, the rotating shaft in the stroke limiter drives the support sleeve 11 connected to it to rotate, and the rotation of the support sleeve 11 drives the adjustment shaft 13 connected to it to rotate, and then drives the cam ring 14 to rotate and slide in its axial direction. When the raised portion on the cam ring 14 touches the contact on the microswitch 2, the microswitch 2 sends a control signal to the outside, causing the device to stop moving or sound an alarm. When the stroke limiter moves in the opposite direction or adopts the reset setting, the elastic reset member 17 drives the adjustment shaft 13 and then drives the cam ring 14 back to the initial setting position.

[0041] In the face of different scenarios, the set operating distance of the stroke limiter needs to be adjusted according to the environment. For this purpose, the set position of the cam ring 14 in the cam assembly 1 needs to be adjusted. The specific adjustment steps are: use a screwdriver to press down on the operating hole 133, thereby pushing the adjustment shaft 13 downward, so that the adjustment shaft 13 reaches the final position that can trigger the micro switch 2, and then rotate the screwdriver downward to drive the adjustment shaft 13 to rotate synchronously. The adjustment shaft 13 realizes the rotation adjustment of the cam ring 14 by rotating the engaging teeth 131 and the gear provided in the cam ring 14. After the adjustment is completed, loosen the adjustment shaft 13 so that the adjustment shaft 13 is reset and maintained in the initial position under the action of the elastic reset member 17. At this time, the adjustment shaft 13 is locked and cannot rotate, and the cam ring 14 cannot rotate. Therefore, when using the above structure to adjust the position of the cam assembly 1, there is no need to loosen the 16 locking nut inside the shaft connection hole 111 of the support sleeve 11. The adjustment operation of the adjustment shaft 13 can be performed directly, making the operation more convenient and accurate.

[0042] The present invention is also adaptable to a wider range of micro switches 2. Depending on the working environment, the present invention can select micro switches 2 of different widths to form a micro switch assembly. The micro switch assembly can be entirely mounted on the first micro switch mounting base 32 or entirely mounted on the second micro switch mounting base 33, or can be mounted separately on the first micro switch mounting base 32 and the second micro switch mounting base 33, so as to ensure that micro switches 2 of different sizes can be adapted and linked with the cam assembly 1, ensuring that the cam ring 14 can drive the contacts of the micro switches 2 to operate together when rotating to the set specified adjustment position.

[0043] In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more. The utility model concept of the present utility model is not limited to this utility model, and any modification using the concept of the present utility model will be included in the scope of protection of the patent right of this patent.

Claims

1. A travel limiter fine adjustment assembly, characterized in that: include: A cam mechanism (1) comprises a supporting sleeve (11), a mounting plate (12), a bolt (15), a locking nut (16), a plurality of cam rings (14) and an equal number of adjusting shafts (13), wherein the cam rings (14) are stacked and arranged outside the supporting sleeve (11), one end of the adjusting shaft (13) extends into the cam ring (14), and the other end of the adjusting shaft (13) is connected to an adjusting shaft mounting opening (122) on the mounting plate (12), and the supporting sleeve A polygonal shaft connection hole (111) is provided at the center of one end of the cylinder (11), and the shaft connection hole (111) is used to connect with the shaft in the travel limiter. The shaft connection hole (111) is connected to the other end of the support sleeve (11) and is provided with a bolt connection hole (113). A bolt installation opening (121) is provided at the center of the mounting plate (12). The bolt (15) passes through the bolt installation opening (121) and enters the bolt connection hole (113) to be matched with the lock nut (16). A micro switch mechanism comprises a plurality of micro switches (2), each micro switch (2) being correspondingly arranged on one side of the cam ring (14); The base component (3) comprises a mounting plate fixing opening (31) and a micro switch fixing seat, wherein the cam mechanism (1) is fixed to the base component (3) by the matching arrangement of the mounting plate (12) and the mounting plate fixing opening (31), and the micro switch fixing seat is used for fixing the micro switch mechanism.

2. The travel limiter fine-motion adjustment assembly according to claim 1, characterized in that: The rotating shaft connection hole (111) is in the shape of a hexagonal prism, the locking nut (16) is in the shape of a hexagon, and the locking nut (16) is arranged at the bottom of the rotating shaft connection hole (111) after being connected to the bolt (15).

3. The travel limiter fine adjustment assembly according to claim 1, characterized in that: The micro switch fixing seat comprises a first micro switch fixing seat (32) and a second micro switch fixing seat (33), wherein the width of the second micro switch fixing seat (33) is greater than the width of the first micro switch fixing seat (32).

4. The travel limiter fine-motion adjustment assembly according to claim 1, characterized in that: A positioning hole (112) is further provided in the support sleeve (11), and one end of the adjustment shaft (13) extending toward the cam ring (14) is connected to the support sleeve (11) through the positioning hole (112).

5. The travel limiter fine-motion adjustment assembly according to claim 1, characterized in that: A limiting tooth is provided in the adjusting shaft mounting opening (122), and a mounting tooth (132) is provided at one end of the adjusting shaft (13) connected to the mounting plate (12).

6. The travel limiter fine-motion adjustment assembly according to claim 1, characterized in that: The portion of the adjustment shaft (13) disposed on the surface of the mounting plate (12) is provided with an operating hole (133).

7. The travel limiter fine-motion adjustment assembly according to claim 4, characterized in that: The connection portion between the adjusting shaft (13) and the supporting sleeve (11) is provided with an elastic reset member (17).

8. The travel limiter fine-motion adjustment assembly according to claim 1, characterized in that: The bolt (15) and the lock nut (16) are of M4 type.

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