CN215952837U - Testing device for comb plate force of escalator - Google Patents
Testing device for comb plate force of escalator Download PDFInfo
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- CN215952837U CN215952837U CN202122093993.XU CN202122093993U CN215952837U CN 215952837 U CN215952837 U CN 215952837U CN 202122093993 U CN202122093993 U CN 202122093993U CN 215952837 U CN215952837 U CN 215952837U
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Abstract
The utility model discloses a testing device for the comb plate force of an escalator, which comprises: a framework having a beam portion and front and rear vertical portions; a fixed pull rod part connected with the lower end of the rear vertical part; a horizontal force testing rod passing through the lower end of the rear vertical part, and a horizontal force testing rod driving structure for driving the horizontal force testing rod to move horizontally; a horizontal force testing tension meter installed on the front end of the horizontal force testing rod; a vertical force test bar passing through the beam portion; a vertical force testing rod driving structure for driving the vertical force testing rod to vertically move; a vertical force test tension meter installed on the lower end of the vertical force test rod; and the step pressing component is arranged on the lower end of the front vertical part and can be connected with at least one step tooth in the step in a tensioning mode. The utility model has simple structure, convenient use, accurate and reliable measurement value and can test horizontal and vertical forces.
Description
Technical Field
The utility model relates to the technical field of escalator testing, in particular to a testing device for the comb plate force of an escalator, which is mainly used for checking whether the comb plate force of the escalator can reach the international standard or not so as to ensure the safety of passengers.
Background
With the adoption of the escalator and the moving sidewalk (which also belong to the escalator), the escalator and the moving sidewalk are widely applied to places with large people flow, such as subway stations, airports, shopping malls, hospitals and the like, and the escalator and the moving sidewalk bear the task of quickly conveying passengers. People are confronted with the danger caused by unsafe factors existing in the escalator or the moving pavement, such as misoperation of a comb plate or an accident of hurting people caused by no action, while enjoying the rapid service provided by the escalator or the moving pavement.
In GB16899-2011 "safety standards for manufacturing and installing escalators and moving walkways" (hereinafter referred to as national standards), the following description is given for the foreign matter at the comb plate, the steps, and the place where the pallets enter the comb teeth: 5.7.3.2.6 if the situation is not 5.7.3.2.5 after the foreign object is caught, the escalator or moving walkway should automatically stop when the comb plate or escalator or step collides. According to the national standard, after the steps and the pedals are clamped into foreign matters, the steps and the pedals impact the comb plate to act, and the escalator should automatically stop to protect the safety of passengers.
When the comb plate collides with the step or the pedal, a horizontal force and a vertical force are certainly generated on the comb plate, so that the comb plate moves or rotates, and the switch is triggered. Therefore, the resistance force of the comb plate must be within a reasonable range, and when the resistance force is too large, foreign matters are clamped and still do not act, so that the safety of passengers is influenced. When the resistance is too small, false operation is easy to occur, so that the escalator cannot normally run.
Chinese patent application No. CN201620425899.6 discloses a fishback atress detection device of staircase, it sets up the propelling movement frame on the guide including guide, the fixed tensiometer of installing on the guide and the activity of installing on the step, the propelling movement frame can be at the side-to-side motion under the guide of guide, the one end and the fishback tip contact of propelling movement frame, the atress end and the promotion frame fixed connection of tensiometer, when the step is to the direction motion of being close to the fishback, the guide is to the direction motion of being close to the fishback under the drive of step, and the propelling movement frame offsets with the fishback under the pulling force effect of tensiometer atress end, and the tensiometer detects out the atress size of fishback. The fixing method of the patent is that the detection device is placed on the step and is not fixed, and the detection device is easy to turn over during the test process. In addition, the stress of the escalator can be driven by the thrust of the steps, and the escalator is electrified. Also, the patent can only test forces in one direction.
Chinese patent application No. CN201811056467.2 discloses escalator comb plate safety protection switch trigger force measuring device and measuring method, its fixed knot constructs, draw pressure transmission structure and draw pressure measurement structure to assemble in the major structure, fix measuring device in the appropriate position through fixed knot structure, through the flexible of screw drive mechanism control detection head, simulate the scene of escalator comb plate atress in the real scene, trigger safety switch, measure this comb plate safety switch trigger force, adjust safety switch trigger mechanism, make this comb plate safety switch trigger force be in the safety trigger force scope of setting for, ensure escalator normal safe operation. The fixing mode of this patent utilizes the tester both feet to step on the support diaphragm, guarantees that the support is in steady state in the test procedure, perhaps utilizes cam mechanism to press from both sides tightly on the step then the rotation driving lever of pinion top, produces pulling force and thrust, trigger switch. In addition, after the direction test of the horizontal force is completed, the mounting position of the jig needs to be adjusted, and then the force in the vertical direction needs to be tested again.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a device for testing the comb plate force of the escalator, which is capable of measuring the horizontal force and the vertical force of the comb plate at the same time in one-time installation without adjusting the position, so that the resistance value of the comb plate is within a reasonable range, the safety of passengers is improved, and the normal operation of the escalator is ensured.
In order to achieve the above object, the present invention provides a device for testing a comb plate force of an escalator, comprising:
a portal frame having a beam portion and front and rear vertical portions connected to front and rear ends of the beam portion;
a fixed pull rod part connected with the lower end of the rear vertical part;
a horizontal force testing rod passing through the lower end of the rear vertical part and capable of horizontally moving relative to the rear vertical part;
the horizontal force testing rod driving structure is arranged at the rear end of the horizontal force testing rod and drives the horizontal force testing rod to move horizontally;
a horizontal force testing tension meter installed on the front end of the horizontal force testing rod;
a vertical force test bar passing through the beam portion, the vertical force test bar being capable of vertical movement relative to the beam portion;
the vertical force testing rod driving structure is arranged on the upper end of the vertical force testing rod and drives the vertical force testing rod to vertically move;
a vertical force test tension meter installed on the lower end of the vertical force test rod;
and the step pressing component is arranged on the lower end of the front vertical part and can be connected with at least one step tooth in the step in a tensioning mode.
In a preferred embodiment of the utility model, the left pull rod and the right pull rod are further included, the left pull rod is movably inserted into the left end of the fixed pull rod part, and the telescopic length of the left pull rod relative to the fixed pull plate part can be adjusted; the right pull rod is movably inserted into the right end of the fixed pull rod part, and the telescopic length of the right pull rod relative to the fixed pull plate part can be adjusted.
In a preferred embodiment of the utility model, a clamp is fixed on the inner side of the tail end of each of the left pull rod and the right pull rod and used for clamping the comb plate bracket during testing.
In a preferred embodiment of the present invention, the horizontal force testing rod is a horizontal force testing screw, and the horizontal force testing rod driving structure is a horizontal force testing nut screwed on the horizontal force testing screw; the vertical force testing rod is a vertical force testing screw rod, and the driving structure of the vertical force testing rod is a vertical force testing nut screwed on the vertical force testing screw rod.
In a preferred embodiment of the utility model, a horizontal force testing tension meter C-shaped clamping block is fixed at the front end of the horizontal force testing screw rod, the horizontal force testing tension meter C-shaped clamping block clamps the horizontal force testing tension meter and is connected through a horizontal force bolt, and the horizontal force bolt penetrates through the horizontal force testing tension meter C-shaped clamping block and the horizontal force testing tension meter; the front end of the vertical force testing screw rod is fixedly provided with a vertical force testing tension meter C-shaped clamping block, the vertical force testing tension meter C-shaped clamping block clamps the vertical force testing tension meter and is connected with the vertical force testing tension meter through a vertical force bolt, and the vertical force bolt penetrates through the vertical force testing tension meter C-shaped clamping block and the vertical force testing tension meter.
In a preferred embodiment of the utility model, the step pressing member comprises a pressing plate and a plurality of tensioning mechanisms, and the top surface of the pressing plate is fixedly connected with the lower end of the front vertical part; at least one pair of gear shaping teeth are arranged on the bottom surface of the pressing plate, and each pair of gear shaping teeth are parallel to each other and are respectively inserted into two step clamping grooves on the steps; each tensioning mechanism is mounted on the compacting plate and is inserted between and drives each pair of gear shaping teeth to deform.
In a preferred embodiment of the utility model, a step clamping groove is arranged between two step clamping grooves on the step at intervals.
In a preferred embodiment of the present invention, the tensioning mechanism comprises a tensioning screw rod penetrating through the compacting plate from top to bottom, a tensioning block is screwed at the lower end of the tensioning screw rod, and a handle is mounted at the upper end of the tensioning screw rod.
In a preferred embodiment of the utility model, the horizontal force test tension meter may be used in conjunction with a vertical force test tension meter to form a test tension meter.
Due to the adoption of the technical scheme, the utility model is different from the comb plate stress detection device of the escalator disclosed in CN201620425899.6 in that 1) the fixed pull rod part, the left pull rod and the right pull rod are fixed at one end clamped on the step and fixed at the tail end of the comb plate, so that the fixing is reliable and convenient;
2) the horizontal force testing screw rod, the horizontal force testing nut, the vertical force testing screw rod and the vertical force testing nut are adopted to test the horizontal tension and the vertical tension of the comb plate, the escalator is not required to be driven in an electrified way, and the test is more convenient; 3) the horizontal force and the vertical force of the comb plate can be tested without dismounting and debugging.
The difference between the utility model and the device and the method for measuring the triggering force of the safety protection switch of the comb plate of the escalator disclosed by the Chinese patent application No. CN201811056467.2 is that: 1) the front end of the utility model is respectively inserted into the two step clamping grooves of the steps by the mutual parallel of each pair of gear shaping teeth, and the tension block in the tension mechanism is used for driving each pair of gear shaping teeth to deform so as to be fixedly connected with the steps, and the rear end is fixed on one end clamped on the steps by the fixed pull rod part, the left pull rod and the right pull rod and fixed on the comb plate bracket, so that the two ends are fixed, and the utility model is more stable and does not need to be stepped by hands to keep stable. 2) The horizontal force testing screw rod, the horizontal force testing nut, the vertical force testing screw rod and the vertical force testing nut are adopted to test the horizontal tension and the vertical tension of the comb plate, the escalator is not required to be driven in an electrified way, and the test is more convenient; 3) the horizontal force and the vertical force of the comb plate can be tested without dismounting and debugging.
Drawings
Fig. 1 is a schematic structural diagram of a comb plate force testing device (without a vertical force testing rod, a vertical force testing rod driving structure and a vertical force testing tension meter) of an escalator.
Fig. 2 is a schematic structural diagram of the escalator comb plate force testing device (without a horizontal force testing rod, a horizontal force testing rod driving structure and a horizontal force testing tension meter).
Fig. 3 is an exploded view of the escalator comb plate force testing device of the present invention.
Fig. 4 is a schematic diagram of the testing device for testing the comb plate force of the escalator for testing the horizontal force of the comb plate.
Fig. 5 is a schematic view of the device for testing the comb plate force of the escalator for testing the vertical force of the comb plate.
Fig. 6 is a schematic view of the installation between the step pressing member and the step in the escalator comb plate force testing device of the present invention.
Detailed Description
The utility model is further described below in conjunction with the appended drawings and detailed description.
Referring to fig. 1 to 4, the escalator comb plate force testing device 9 shown in the figures tests the resistance of the escalator comb plate before the escalator leaves a factory so as to meet the national standard requirements and achieve the purpose of improving the safety of passengers.
This testing arrangement 9 of escalator fishback power includes a door style of calligraphy frame 1, and this door style of calligraphy frame 1 has a crossbeam portion 1a and with preceding vertical portion 1b and the vertical portion 1c in back that crossbeam portion 1a front and back end is connected, respectively welds a reinforcing plate 1d in the inboard of crossbeam portion 1a and preceding vertical portion 1b and the vertical portion 1c junction in back to increase crossbeam portion 1a and preceding vertical portion 1b and the vertical portion 1 c's joint strength in back.
A fixed pull rod part 15 is fixed at the lower end of the rear vertical part 1c by welding. The fixed pull rod part 15 is made of a square pipe. A reinforcing plate 15a is also welded between the rear vertical portion 1c and the fixed stay portion 15 to increase the coupling strength between the rear vertical portion 1c and the fixed stay portion 15. A plurality of positioning holes 15b are provided at intervals on the upper surface of the fixing lever portion 15.
The utility model also comprises a left pull rod 2 and a right pull rod 3, wherein the left pull rod 2 and the right pull rod 3 are also made of square tubes, and the external dimensions of the left pull rod 2 and the right pull rod 3 are matched with the dimensions of the inner holes of the fixed pull rod part 15, so that the left pull rod 2 and the right pull rod 3 can be conveniently inserted into the inner holes of the fixed pull rod part 15 from the left end and the right end of the fixed pull rod part 15. A plurality of positioning holes 2a and 3a are formed in the upper surfaces of the left and right tie rods 2 and 3 at intervals, after one or two positioning holes 2a and 3a are aligned with the corresponding positioning holes 15b, bolts 15c are inserted into the positioning holes 15b, 2a and 3a, and then the left and right tie rods 2 and 3 are fastened by nuts 15d, so that the left and right tie rods 2 and 3 can be connected with the fixed tie rod part 15. If the telescopic length of the left pull rod 2 and the right pull rod 3 relative to the fixed pull rod part 15 needs to be adjusted, the positioning bolt 15b is pulled out, and the left pull rod 2 and the right pull rod 3 are moved.
And a right clamp 2b and a right clamp 3b are respectively fixed on the inner sides of the tail ends of the left pull rod 2 and the right pull rod 3 and used for clamping the comb plate support during testing.
In addition, stop pins 2c and 3c can be inserted into other positioning holes 2a and 3a of the left pull rod 2 and the right pull rod 3, and the stop pins 2c and 3c are locked on the left pull rod 2 and the right pull rod 3 through nuts 2d and 3 d. The purpose of the stop pins 2c, 3c is to rest against the edge of the comb plate support 11a during testing.
A horizontal through hole 1ca is formed at the lower end of the rear vertical portion 1c, and a horizontal force testing rod 4 of the present invention passes through the horizontal through hole 1ca and can horizontally move relative to the rear vertical portion 1 c. Preferably, the horizontal force testing rod 4 is a horizontal force testing screw (certainly not limited to the screw form, but also other forms known to those skilled in the art).
The horizontal force testing rod 4, namely the rear end of the horizontal force testing screw rod, is provided with a horizontal force testing rod driving structure which drives the horizontal force testing rod 4, namely the horizontal force testing screw rod, to move horizontally. Preferably, the horizontal force testing rod driving structure is a horizontal force testing nut 4a screwed on the horizontal force testing screw 4, i.e. the rear end of the horizontal force testing screw, so that the horizontal force testing screw 4, i.e. the horizontal force testing screw, can be driven to move horizontally by rotating the horizontal force testing nut 4 a.
A horizontal force testing tension meter C-shaped clamping block 5 is fixed at the front end of the horizontal force testing rod 4, namely the horizontal force testing screw rod, and the horizontal force testing tension meter 7 is connected with a horizontal force bolt 6 which penetrates through the horizontal force testing tension meter C-shaped clamping block 5 and the horizontal force testing tension meter 7.
A vertical through hole 1ab is formed at a suitable position of the beam portion 1a, and a vertical force testing rod 8 of the present invention passes through the vertical through hole 1ab and can vertically move relative to the beam portion 1 a. Preferably, the vertical force test rod 8 is a vertical force test screw (certainly not limited to the screw form, but also other forms known to those skilled in the art).
The vertical force testing rod 8, namely the upper end of the vertical force testing screw rod is provided with a vertical force testing rod driving structure which drives the vertical force testing rod 8, namely the vertical force testing screw rod to vertically move. Preferably, the vertical force testing rod driving structure is a vertical force testing nut 8a screwed on the rear end of the vertical force testing screw 8, i.e., the vertical force testing screw, so that the vertical force testing screw 8, i.e., the vertical force testing screw, can be driven to move vertically by rotating the vertical force testing nut 8 a.
A vertical force testing tension meter C-shaped clamping block 5a is fixed at the lower end of the vertical force testing rod 8, namely the vertical force testing screw rod, and the vertical force testing tension meter 7a is connected through a horizontal force bolt 6a which penetrates through the vertical force testing tension meter C-shaped clamping block 5a and the vertical force testing tension meter 7 a.
The horizontal force test tension meter 7 and the vertical force test tension meter 7a can share one test tension meter, after the horizontal force test is finished, the test tension meter is taken down from the C-shaped clamping block 5 of the horizontal force test tension meter and is installed on the C-shaped clamping block 5a of the vertical force test tension meter, and the vertical force of the comb plate is tested.
The step hold down member 13 of the present invention is mounted on the lower end of the front vertical portion 1b, and referring to fig. 6 in combination, the step hold down member 13 includes a hold down plate 13a and four sets of tensioning mechanisms 13b (of course, there are no limitations to four sets, and there may be more sets, which are mainly matched by the number of pairs of cogs). The top surface of the pressing plate 13a is fixedly connected with the lower end of the front vertical part 1b in a welding mode.
Four pairs of gear shaping teeth 13c are arranged on the bottom surface of the pressing plate 13a, the four pairs of gear shaping teeth 13c are respectively arranged on the left side and the right side of the bottom surface of the pressing plate 13a, two pairs of gear shaping teeth 13c on each side are flush, and two pairs of gear shaping teeth 13c on the two sides are parallel.
Each tensioning mechanism 13b is mounted on the pressure plate 13a and is inserted between each pair of cogs 13c and drives each pair of cogs 13c to deform. Each tensioning mechanism 13b includes a tensioning screw 13d passing through the pressing plate 13a from the top down, a tensioning block 14 is screwed to the lower end of each tensioning screw 13d, and a handle 13e is mounted to the upper end of each tensioning screw 13 d.
The use method of the testing device 9 for the comb plate force of the escalator comprises the following steps:
referring to fig. 4 to 6, the escalator comb plate force testing device 9 of the present invention is used in cooperation with a step 10 and a comb plate assembly 11. During testing, the positions of the left pull rod 2 and the right pull rod 3 are adjusted according to the method, the left pull rod 2 and the right pull rod 3 are adjusted to be reasonable in opening according to the step width, and the opening size can be correspondingly adjusted according to the step width. After the left pull rod 2 and the right pull rod 3 are adjusted in place, the testing device 9 for the comb plate force of the escalator is arranged on the step 10 and the comb plate assembly 11, and the specific method is as follows: the clamping clips 2b and 3b on the left pull rod 2 and the right pull rod 3 are clamped on a comb plate support 11a, stop pins 2c and 3c lean against the edge of the comb plate support 11a, a step pressing component 13 is placed on a step 10, four pairs of inserted teeth 13c are inserted into two step clamping grooves 10a and 10b on the step 10, one step clamping groove 10c is arranged between the two step clamping grooves 10a and 10b in a spaced mode, then a handle 13e is rotated to drive a tensioning screw 13d to move upwards, and the pair of inserted teeth 13c are extruded outwards, so that the pair of inserted teeth 13c are tensioned and fixed on the two step clamping grooves 10a and 10 b.
Hooking the comb plate 11b in the comb plate assembly 11 with the horizontal force testing tension meter 7, adjusting the horizontal force testing nut 4a after the fixing is determined to be stable, moving the horizontal force testing rod 4, namely the horizontal force testing screw rod backwards until the comb plate 11b slides backwards and triggers the switch, and reading out the numerical value of the horizontal force testing tension meter 7 at the moment. If the value is within the standard range, no adjustment is required. If the value is not within the range, the comb plate spring needs to be adjusted to reach the standard range.
After the horizontal force test is completed, the vertical force test method is as follows: the vertical force testing nut 8a is rotated to enable the vertical force testing rod 8, namely the vertical force testing screw rod, to move vertically, the position of the vertical force testing rod 8, namely the vertical force testing screw rod, is adjusted, and enough space is reserved. The vertical force testing tension meter 7a is hooked on a comb plate 11b in the comb plate assembly 11, a vertical force testing nut 8a is adjusted after fixing is determined to be stable, the vertical force testing rod 8, namely a vertical force testing screw rod, is moved upwards until the comb plate 11b is turned upwards and triggers a switch, and at the moment, the numerical value of the vertical force testing tension meter 7a is read out. If the value is within the standard range, no adjustment is required. If the value is not within the range, the comb plate spring needs to be adjusted to reach the standard range.
The foregoing is only a preferred embodiment of the utility model, and it should be noted that various changes and modifications can be made by those skilled in the art without departing from the principle of the utility model, and they are considered to be within the scope of the utility model.
The utility model provides a device for testing the force of a comb plate of an escalator, which is simple in structure, convenient to use and accurate and reliable in measured value.
The utility model can test horizontal and vertical forces at the same time, and the test process is finished by the action of the inductive switch, and the normal work of the switch and the whole trigger system is also checked while the comb plate assembly is measured.
Claims (9)
1. The utility model provides an automatic testing arrangement of staircase fishback power which characterized in that includes:
a portal frame having a beam portion and front and rear vertical portions connected to front and rear ends of the beam portion;
a fixed pull rod part connected with the lower end of the rear vertical part;
a horizontal force testing rod passing through the lower end of the rear vertical part and capable of horizontally moving relative to the rear vertical part;
the horizontal force testing rod driving structure is arranged at the rear end of the horizontal force testing rod and drives the horizontal force testing rod to move horizontally;
a horizontal force testing tension meter installed on the front end of the horizontal force testing rod;
a vertical force test bar passing through the beam portion, the vertical force test bar being capable of vertical movement relative to the beam portion;
the vertical force testing rod driving structure is arranged on the upper end of the vertical force testing rod and drives the vertical force testing rod to vertically move;
a vertical force test tension meter installed on the lower end of the vertical force test rod;
and the step pressing component is arranged on the lower end of the front vertical part and can be connected with at least one step tooth in the step in a tensioning mode.
2. The escalator comb plate force testing device according to claim 1, further comprising a left pull rod and a right pull rod, wherein the left pull rod is movably inserted into the left end of the fixed pull rod part, and the telescopic length of the left pull rod relative to the fixed pull plate part can be adjusted; the right pull rod is movably inserted into the right end of the fixed pull rod part, and the telescopic length of the right pull rod relative to the fixed pull plate part can be adjusted.
3. An escalator comb plate force testing device according to claim 2, wherein a clamp is fixed on the inner side of each of the ends of the left and right pull rods for clamping the comb plate support during testing.
4. The escalator comb plate force testing device according to claim 3, wherein the horizontal force testing rod is a horizontal force testing screw rod, and the horizontal force testing rod driving structure is a horizontal force testing nut screwed on the horizontal force testing screw rod; the vertical force testing rod is a vertical force testing screw rod, and the driving structure of the vertical force testing rod is a vertical force testing nut screwed on the vertical force testing screw rod.
5. The escalator comb plate force testing device according to claim 4, wherein a horizontal force testing tension meter C-shaped clamping block is fixed at the front end of the horizontal force testing screw rod, the horizontal force testing tension meter C-shaped clamping block clamps the horizontal force testing tension meter and is connected through a horizontal force bolt, and the horizontal force bolt penetrates through the horizontal force testing tension meter C-shaped clamping block and the horizontal force testing tension meter; the front end of the vertical force testing screw rod is fixedly provided with a vertical force testing tension meter C-shaped clamping block, the vertical force testing tension meter C-shaped clamping block holds the vertical force testing tension meter and is connected with the vertical force testing tension meter through a vertical force bolt, and the vertical force bolt penetrates through the vertical force testing tension meter C-shaped clamping block and the vertical force testing tension meter.
6. The escalator comb plate force testing device according to any one of claims 1-5, wherein the step pressing member comprises a pressing plate and a plurality of tensioning mechanisms, and the top surface of the pressing plate is fixedly connected with the lower end of the front vertical part; at least one pair of gear shaping teeth are arranged on the bottom surface of the pressing plate, and each pair of gear shaping teeth are parallel to each other and are respectively inserted into two step clamping grooves on the steps; each tensioning mechanism is mounted on the compacting plate and is inserted between and drives each pair of gear shaping teeth to deform.
7. An escalator comb plate force testing device according to claim 6, wherein a step clamping groove is arranged between two step clamping grooves on the steps.
8. An escalator comb plate force testing device according to claim 6, wherein the tensioning mechanism comprises a tensioning screw rod penetrating through the pressing plate from top to bottom, a tensioning block is screwed at the lower end of the tensioning screw rod, and a handle is mounted at the upper end of the tensioning screw rod.
9. An escalator comb plate force testing device according to claim 1, characterized in that the horizontal force testing tension meter can be used together with a vertical force testing tension meter to form a testing tension meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122093993.XU CN215952837U (en) | 2021-09-01 | 2021-09-01 | Testing device for comb plate force of escalator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122093993.XU CN215952837U (en) | 2021-09-01 | 2021-09-01 | Testing device for comb plate force of escalator |
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| Publication Number | Publication Date |
|---|---|
| CN215952837U true CN215952837U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122093993.XU Active CN215952837U (en) | 2021-09-01 | 2021-09-01 | Testing device for comb plate force of escalator |
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| Country | Link |
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| CN (1) | CN215952837U (en) |
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2021
- 2021-09-01 CN CN202122093993.XU patent/CN215952837U/en active Active
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