escalator drive unit displacement monitoring device
By flexibly connecting the first and second supports, the displacement anomalies of the escalator drive unit in multiple directions can be detected, solving the problem of incomplete monitoring in the existing technology and improving the flexibility and accuracy of monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU GUANGRI ELEVATOR IND
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-31
AI Technical Summary
Existing technologies are insufficient to comprehensively monitor abnormal displacement of the escalator drive unit in multiple directions, especially deformation and breakage of the base of the drive unit, resulting in incomplete monitoring.
The flexible connection between the first and second brackets enables the drive unit to detect abnormal displacement in the first horizontal, second horizontal, and vertical directions. Combined with an adjustable displacement monitoring safety switch and trigger plate, it provides multi-directional displacement monitoring.
It enables the detection of abnormal displacement of the drive host in five directions, including deformation and breakage of the host base, thus improving the flexibility and accuracy of monitoring.
Smart Images
Figure CN224577829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of displacement monitoring technology, and more specifically, to a novel displacement monitoring device for an escalator drive unit. Background Technology
[0002] The escalator drive unit is the power source for escalator operation, bearing the largest load and tension. Therefore, the stability requirements for the drive unit are extremely high, necessitating real-time monitoring of any loosening or displacement. While various displacement monitoring solutions for drive units have been proposed in the industry, all have shortcomings.
[0003] Patent application CN213326281U discloses a displacement protection device applicable to small and medium-sized escalator main units. Its displacement protection switch is installed on the escalator base plate and can only detect abnormal situations such as breakage or displacement of the escalator base plate. It cannot detect situations such as loose bolt connections of the reducer (main unit base).
[0004] Patent application CN210710302U discloses a drive host displacement protection device. The drive host mounting base plate is provided with a stroke bracket, which is installed at the fixing bolt of the drive host (equivalent to a trigger plate). When the drive host mounting base plate breaks or the drive host moves to the left, the device will not detect any abnormalities.
[0005] Patent application CN218968591U discloses a bidirectional displacement monitoring device for a heavy-duty escalator drive host. One end of the host bracket is fixed in the middle of the drive host body and is integrated with the drive host body. That is, the host bracket (equivalent to a trigger plate) is installed at the drive host body. The electrical switch can only monitor abnormal displacement in the forward and backward directions. Summary of the Invention
[0006] The purpose of this utility model is to overcome the defects and deficiencies of the existing technology and provide an escalator drive host displacement monitoring device. Through the flexible connection of the first bracket and the second bracket, the abnormal displacement of the drive host in five directions, namely the first horizontal direction, the second horizontal direction, and the vertical direction, can be detected. It also provides more flexible installation and adjustment of the displacement monitoring safety switch and trigger plate.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] An escalator drive host displacement monitoring device includes a drive host, an escalator base plate, a displacement monitoring component, a support channel steel and a host base. The support channel steel is welded and fixed to the escalator truss, the escalator base plate is installed on the support channel steel, the host base is installed on the escalator base plate, and the drive host is installed on the host base.
[0009] The displacement monitoring assembly includes a displacement monitoring safety switch, a first bracket, a second bracket, a trigger plate, and a pressure block. The first bracket is mounted on a supporting channel steel, the second bracket is mounted on the first bracket, the displacement monitoring safety switch is mounted on the second bracket, the trigger plate is mounted on the main unit base, and the pressure block is mounted on the trigger plate. The pressure block and the displacement monitoring safety switch maintain pre-pressure contact.
[0010] The first bracket is provided with a first mounting hole and a second mounting hole. The first bracket is adjusted to a first lateral position on the supporting channel steel through the first mounting hole, and the second bracket is adjusted to a second lateral position on the first bracket through the second mounting hole. The second bracket is provided with a switch mounting hole, and the displacement monitoring safety switch is adjusted to a vertical position on the second bracket through the switch mounting hole. The trigger plate is provided with a trigger mounting hole, and the trigger plate is adjusted to a vertical position on the main unit base through the trigger mounting hole.
[0011] Furthermore, the direction of the first mounting hole is perpendicular to the direction of the second mounting hole.
[0012] Furthermore, the first mounting hole is a transverse U-shaped hole.
[0013] Furthermore, the direction of the trigger mounting hole is parallel to the direction of the switch mounting hole.
[0014] Furthermore, the trigger mounting hole is a vertical U-shaped hole.
[0015] Furthermore, the second mounting hole is a horizontal slotted hole, and the switch mounting hole is a vertical slotted hole.
[0016] Furthermore, the escalator base plate is fixedly connected to the supporting channel steel by bolts, and the main unit base is fixedly connected to the escalator base plate by bolts.
[0017] Furthermore, the first bracket is fixedly connected to the supporting channel steel by bolts, and the second bracket is fixedly connected to the first bracket by bolts.
[0018] Furthermore, the trigger plate is fixedly connected to the main unit base by bolts, and the pressure block is fixedly connected to the trigger plate by bolts.
[0019] Furthermore, the main unit base serves as the drive unit reducer.
[0020] Compared with the prior art, the first bracket of this utility model can be adjusted to a first lateral position on the supporting channel steel, the second bracket can be adjusted to a second lateral position on the first bracket, and the displacement monitoring safety switch can be adjusted to a vertical position on the second bracket. Through the connection between the second bracket and the first bracket, the displacement monitoring safety switch can realize the second lateral position adjustment, and finally realize the detection of displacement abnormalities of the drive host in five directions: first lateral, second lateral, and vertical.
[0021] This utility model solves the problem of not being able to detect deformation and breakage of the main unit base (i.e., reducer) except for the escalator base plate) by flexibly connecting the first bracket and the second bracket, and provides more flexible installation and adjustment of the displacement monitoring safety switch and trigger plate; by changing the size of the pressure block on the trigger plate, the amount of displacement monitored can be adjusted. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the combined displacement monitoring device for the escalator drive unit.
[0023] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.
[0024] Figure 3 An exploded view of the escalator drive unit displacement monitoring device after the escalator floor is hidden.
[0025] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.
[0026] Explanation of icon numbers:
[0027] 1-Drive host; 2-Escalator base plate; 3-Displacement monitoring device; 31-Displacement monitoring safety switch; 32-First bracket; 321-First mounting hole; 322-Second mounting hole; 33-Second bracket; 331-Switch mounting hole; 34-Trigger plate; 341-Trigger mounting hole; 35-Pressure block; 4-Support channel steel; 5-Main host base. Detailed Implementation
[0028] The displacement monitoring device for the automatic escalator drive unit of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0029] Please see Figure 1 and Figure 3 This utility model discloses an escalator drive host displacement monitoring device, including a drive host 1, an escalator base plate 2, a displacement monitoring component 3, a support channel steel 4, and a host base 5. The support channel steel 4 is welded and fixed to the escalator truss, the escalator base plate 2 is installed on the support channel steel 4, the host base 5 is installed on the escalator base plate 2, the drive host 1 is installed on the host base 5, and the host base 5 is the reducer of the drive host 1.
[0030] Please see Figure 2 and Figure 4The displacement monitoring component 3 includes a displacement monitoring safety switch 31, a first bracket 32, a second bracket 33, a trigger plate 34, and a pressure block 35. The first bracket 32 is mounted on the supporting channel steel 4, the second bracket 33 is mounted on the first bracket 32, the displacement monitoring safety switch 31 is mounted on the second bracket 33, the trigger plate 34 is mounted on the main unit base 5, and the pressure block 35 is mounted on the trigger plate 34. The pressure block 35 maintains pre-pressure contact with the displacement monitoring safety switch 31.
[0031] Please see Figure 2 and Figure 4 The first bracket 32 is provided with a first mounting hole 321 and a second mounting hole 322, the direction of the first mounting hole 321 being perpendicular to the direction of the second mounting hole 322. In this embodiment, the second mounting hole 322 is a transverse slotted hole, and the first mounting hole 321 is a transverse U-shaped hole. The first bracket 32 adjusts its first transverse position on the supporting channel steel 4 through the first mounting hole 321. The second bracket 33 adjusts its second transverse position on the first bracket 32 through the second mounting hole 322.
[0032] Please see Figure 2 and Figure 4 The second bracket 33 is provided with a switch mounting hole 331. In this embodiment, the switch mounting hole 331 is a vertical slot. The displacement monitoring safety switch 31 is adjusted to its vertical position on the second bracket 33 through the switch mounting hole 331. The displacement monitoring safety switch 31 is also adjusted to its second lateral position through the connection between the second bracket 33 and the first bracket 32.
[0033] Please see Figure 2 and Figure 4 The trigger plate 34 is provided with a trigger mounting hole 341, the direction of which is parallel to the direction of the switch mounting hole 331. In this embodiment, the trigger mounting hole 341 is a vertical U-shaped hole, and the trigger plate 34 adjusts its vertical position on the main unit base 5 through the trigger mounting hole 341.
[0034] In this embodiment, the escalator base plate 2 and the supporting channel steel 4 are fixedly connected by bolts, the main unit base 5 and the escalator base plate 2 are fixedly connected by bolts, the first bracket 32 and the supporting channel steel 4 are fixedly connected by bolts, and the second bracket 33 and the first bracket 32 are fixedly connected by bolts. The trigger plate 34 and the main unit base 5 are fixedly connected by bolts, and the pressure block 35 and the trigger plate 34 are fixedly connected by bolts. Of course, this utility model is not limited to this; other installation methods may be used in other embodiments.
[0035] Under normal circumstances, the pressure block 35 and the displacement monitoring safety switch 31 are kept in a pre-pressurized state, that is, the displacement monitoring safety switch 31 is in a normally closed state. When the normally closed state of the displacement monitoring safety switch 31 is released, that is, the pressure block 35 is no longer in contact with the displacement monitoring safety switch 31 and is not pre-pressurized, the escalator control system determines that the drive host 1 has an abnormal displacement.
[0036] There are generally four situations in which abnormal displacement of drive host 1 occurs:
[0037] 1. After excessive wear, the drive chain of the drive host 1 becomes loose, and the drive host 1 tends to move backward. When the displacement exceeds the effective pre-compression area of the pressure block 35, the escalator control system judges the abnormality and stops the escalator.
[0038] 2. When there is an axis alignment deviation between the output shaft of the drive host 1 and the main drive shaft, the drive host 1 has a tendency to move laterally during operation. When the displacement exceeds the effective pre-compression area of the pressure block 35, the escalator control system determines the abnormality and stops the escalator.
[0039] 3. When the connecting bolts between the main unit base 5 and the escalator base plate 2 are loose or the threads fail, or when the connecting bolts between the escalator base plate 2 and the supporting channel steel 4 are loose or the threads fail, the drive unit 1 will rotate and translate in the direction of the pull of the drive chain, or even overturn. When the displacement exceeds the effective pre-compression area of the pressure block 35, or the pressure block 35 is not pre-compressed by the displacement monitoring safety switch 31, the escalator control system will determine the abnormality and execute the escalator stop.
[0040] 4. If the main unit base 5 or the escalator base plate 2 is subjected to excessive load, the main unit base 5 or the escalator base plate 2 may deform or even break, resulting in the pressure block 35 not being pre-pressed by the displacement monitoring safety switch 31. The escalator control system will then determine the abnormality and stop the escalator.
[0041] To achieve more sensitive displacement monitoring of the drive host or to prevent the displacement monitoring safety switch 31 from being triggered erroneously, the pressure block 35 on the trigger plate 34 can be replaced, and the size of the pressure block 35 can be changed to adjust the effective pre-pressure area of the displacement monitoring safety switch 31.
[0042] In summary, the first bracket 32 of this utility model can be adjusted to a first lateral position on the supporting channel steel 4, the second bracket 33 can be adjusted to a second lateral position on the first bracket 32, and the displacement monitoring safety switch 31 can be adjusted to a vertical position on the second bracket 33. Through the connection between the second bracket 33 and the first bracket 32, the displacement monitoring safety switch 31 can realize the adjustment of the second lateral position, and finally realize the detection of abnormal displacement of the drive host 1 in five directions: first lateral, second lateral, and vertical.
[0043] This utility model solves the problem of not being able to detect deformation and breakage of the main unit base 5 (i.e., reducer) except for the escalator base plate 2 by flexibly connecting the first bracket 32 and the second bracket 33, and provides more flexible installation and adjustment of the displacement monitoring safety switch 31 and the trigger plate 34; by changing the size of the pressure block 35 on the trigger plate 34, the amount of displacement monitored can be adjusted.
[0044] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit disclosed in the present utility model should fall within the patent scope covered by the present utility model.
Claims
1. An escalator drive main machine displacement monitoring device characterized by, It includes a drive unit, an escalator base plate, a displacement monitoring component, a support channel steel, and a main unit base. The support channel steel is welded and fixed to the escalator truss, the escalator base plate is installed on the support channel steel, the main unit base is installed on the escalator base plate, and the drive unit is installed on the main unit base. The displacement monitoring assembly includes a displacement monitoring safety switch, a first bracket, a second bracket, a trigger plate, and a pressure block. The first bracket is mounted on a supporting channel steel, the second bracket is mounted on the first bracket, the displacement monitoring safety switch is mounted on the second bracket, the trigger plate is mounted on the main unit base, and the pressure block is mounted on the trigger plate. The pressure block and the displacement monitoring safety switch maintain pre-pressure contact. The first bracket is provided with a first mounting hole and a second mounting hole. The first bracket is adjusted to a first lateral position on the supporting channel steel through the first mounting hole, and the second bracket is adjusted to a second lateral position on the first bracket through the second mounting hole. The second bracket is provided with a switch mounting hole, and the displacement monitoring safety switch is adjusted to a vertical position on the second bracket through the switch mounting hole. The trigger plate is provided with a trigger mounting hole, and the trigger plate is adjusted to a vertical position on the main unit base through the trigger mounting hole.
2. The escalator drive main shaft displacement monitoring apparatus according to claim 1, characterized by The direction of the first mounting hole is perpendicular to the direction of the second mounting hole.
3. The escalator drive main shaft displacement monitoring apparatus according to claim 2, characterized by The first mounting hole is a horizontal U-shaped hole.
4. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The direction of the trigger mounting hole is parallel to the direction of the switch mounting hole.
5. The escalator drive unit displacement monitoring device according to claim 4, characterized in that, The trigger mounting hole is a vertical U-shaped hole.
6. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The second mounting hole is a horizontal slotted hole, and the switch mounting hole is a vertical slotted hole.
7. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The escalator base plate is fixedly connected to the supporting channel steel by bolts, and the main unit base is fixedly connected to the escalator base plate by bolts.
8. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The first bracket is fixedly connected to the supporting channel steel by bolts, and the second bracket is fixedly connected to the first bracket by bolts.
9. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The trigger plate is fixedly connected to the main unit base by bolts, and the pressure block is fixedly connected to the trigger plate by bolts.
10. The escalator drive unit displacement monitoring device according to claim 1, characterized in that, The base of the main unit is the reducer that drives the main unit.