CN219001954U - Double-pawl safety lever pressing device - Google Patents
Double-pawl safety lever pressing device Download PDFInfo
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- CN219001954U CN219001954U CN202222890348.5U CN202222890348U CN219001954U CN 219001954 U CN219001954 U CN 219001954U CN 202222890348 U CN202222890348 U CN 202222890348U CN 219001954 U CN219001954 U CN 219001954U
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Abstract
The utility model provides a double-pawl safety lever pressing device which comprises a ratchet wheel, a pressing lever and a pawl locking assembly, wherein the ratchet wheel is rotatably connected to the front part of a frame; the lower end of the pressing lever is fixedly connected with the ratchet wheel, the upper end of the pressing lever is provided with a hand lever corresponding to a seat of the frame, and the middle part of the pressing lever is provided with a leg stop; the hand lever is used for limiting the abdomen of a passenger on the seat, the leg stop is used for limiting the legs of the passenger, and the pawl locking assembly is used for axially locking and releasing the ratchet wheel. The double-pawl safe lever pressing device provided by the utility model can effectively improve the free comfort of passengers, is safe and reliable, and is convenient for passengers to interact when riding.
Description
Technical Field
The utility model relates to the technical field of amusement facilities, in particular to a double-pawl safety pressing bar device.
Background
Roller coasters are large amusement facilities selected by amusement parks and are popular with passengers. Roller coasters are generally classified into stimulus-type and experience-type depending on riding comfort. The stimulation type roller coaster pursues stimulation, the track is generally rolled, the speed is high, the passenger experiences overweight and weightlessness in the riding process, the stimulation is stressed, and the audience is teenager population. Experience roller coasters have the advantages of heavier riding experience of passengers, no rolling of the track, low speed, low irritation, certain sightseeing property and wider audience. With the improvement of the living standard of people, family experience wandering is more popular, and the experience roller coaster adapts to tourists of all ages, so that the attention is also higher.
The most important passenger protection device of the roller coaster is a safety pressing bar device, most of the roller coaster seat safety pressing bar devices at present are shoulder pressing type pressing bar devices, and the shoulder pressing type pressing bars limit the upper body of a passenger to prevent the passenger from moving, so that the passenger is protected. The reason for this is to limit the movement range of the upper body of the passenger on the seat to the maximum extent so as to avoid the danger of the roller coaster running at high speed.
However, the above situation is suitable for the roller coasters with the surprise stimulus, but as the technology advances and the requirements of people on the situation experience of the roller coasters are continuously increasing, more and more novel roller coasters are generated, the pursuit of no more people is higher, faster and stronger, more pursuit of situation experience is more, or various roller coasters with various speeds in families are not fast, but more thematic content is provided for people. Under the condition, the conventional shoulder pressing type lever pressing safety device is too stiff and cannot well solve the problems of free comfort, safety, reliability and convenient interaction.
Based on the above technical problems, there is a need for a safety bumper device that can improve the comfort level of passengers, is safe and reliable, and facilitates passenger interaction.
Disclosure of Invention
In view of the above problems, the double-pawl safety lever pressing device provided by the utility model can effectively improve the free comfort of passengers, is safe and reliable, and is convenient for passengers to interact when riding.
The double-pawl safe pressing bar device comprises a ratchet wheel, a pressing lever and a pawl locking assembly, wherein the ratchet wheel is rotatably connected to the front part of a frame; the lower end of the pressing lever is fixedly connected with the ratchet wheel, the upper end of the pressing lever is provided with a hand lever corresponding to a seat of the frame, and the middle part of the pressing lever is provided with a leg stop; wherein, the liquid crystal display device comprises a liquid crystal display device,
the hand lever is used for limiting the abdomen of a passenger on the seat, the leg stop is used for limiting the legs of the passenger, and the pawl locking assembly is used for axially locking and releasing the ratchet wheel.
Furthermore, it is preferable that the pawl lock assembly includes a long pawl, a short pawl, a first transmission mechanism connected to the long pawl, and a second transmission mechanism connected to the short pawl; wherein, the liquid crystal display device comprises a liquid crystal display device,
the long pawl and the short pawl are arranged in front of the ratchet wheel side by side, the main body part of the long pawl and the main body part of the short pawl are both rotationally connected to the frame, and the end parts of the long pawl and the end parts of the short pawl are both matched with the ratchet wheel; and, in addition, the processing unit,
the first transmission mechanism is used for controlling the long pawl to axially lock and release the ratchet wheel, and the second transmission mechanism is used for controlling the short pawl to axially lock and release the ratchet wheel.
In addition, the first transmission mechanism preferably comprises a first pull rod, a second pull rod and a first lifting rod; wherein, the liquid crystal display device comprises a liquid crystal display device,
one end of the first pull rod is hinged with the middle part of the long pawl, the other end of the first pull rod is hinged with one end of the second pull rod, and the other end of the second pull rod is hinged with the upper end of the first jacking rod;
the first lifting rod is vertically arranged, the lower end of the first lifting rod extends to the lower side of the frame and is connected with a lifting power source, and a first lifting spring is arranged at the position of the first lifting rod below the frame.
In addition, the second transmission mechanism preferably comprises a third pull rod, a fourth pull rod and a second lifting rod; wherein, the liquid crystal display device comprises a liquid crystal display device,
one end of the third pull rod is hinged with the middle part of the short pawl, the other end of the third pull rod is hinged with one end of the fourth pull rod, and the other end of the fourth pull rod is hinged with the upper end of the second jacking rod;
the second lifting rod is vertically arranged, the lower end of the second lifting rod extends to the lower side of the frame and is connected with the lifting power source, and a second lifting spring is arranged at the position of the second lifting rod below the frame.
In addition, the first lifting rod and the second lifting rod are both provided with shaft shoulders, and the first lifting rod and the second lifting rod are both in sliding connection with the frame through the shaft shoulders.
In addition, the long pawl is hinged with the first pull rod through a pin shaft, and the first pull rod is hinged with the second pull rod and the second pull rod is hinged with the first lifting rod through a pin shaft;
the short pawl is hinged with the third pull rod, the third pull rod is hinged with the fourth pull rod, and the second pull rod is hinged with the first jacking rod through a pin shaft.
In addition, the preferred structure is that a first support is fixed at the front part of the frame, and the ratchet wheel is rotationally connected with the first support through a first wheel shaft;
the front part of the frame is also fixed with a second support, and the long pawl and the short pawl are respectively connected with the second support in a rotating way through a second wheel shaft.
In addition, it is preferable that a first return spring is connected between the end of the long pawl and the second support, and a second return spring is connected between the end of the short pawl and the second support.
In addition, the structure is preferable that the structure further comprises a buffer assembly, wherein the buffer assembly comprises an air spring, one end of the air spring is hinged with the ratchet wheel, and the other end of the air spring is hinged with a third support on the support.
In addition, it is preferable that a handrail is further provided at an upper end of the pressing lever.
Compared with the prior art, the double-pawl safety press bar device according to the utility model comprises the following components
The beneficial effects are that:
according to the double-pawl safe lever pressing device, the ratchet wheel is matched with the pawl locking component to achieve the reverse self-locking function of the lever pressing, so that a passenger cannot open the lever pressing by himself when riding a roller coaster, and the safety of the passenger is guaranteed.
Drawings
Other objects and results of the present utility model will become more apparent and readily appreciated by reference to the following description and claims in conjunction with the accompanying drawings and a more complete understanding of the utility model.
In the drawings:
FIG. 1 is a front view of a dual pawl safety lever device according to an embodiment of the present utility model;
fig. 2 is a partial perspective enlarged view of a double pawl safety lever device according to an embodiment of the present utility model.
Reference numerals: 1. handrails, 2, hand levers, 3, pressure levers, 4, leg stops, 5, third brackets, 6, air springs, 7, ratchet, 8, long pawl, 9, short pawl, 10, seat, 11, first axle, 12, first brackets, 13, first return spring, 15, first jack spring, 17, second brackets, 18, second axle, 19, frame, 20, first tie rod, 21, first jack rod, 22, second tie rod, 23, third tie rod, 24, fourth tie rod, 25, second jack rod.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring now to the structure of the dual pawl safety lever device provided by the present utility model in detail, fig. 1 shows a front sectional structure of the dual pawl safety lever device according to an embodiment of the present utility model, and fig. 2 shows a top view structure of the dual pawl safety lever device according to an embodiment of the present utility model.
As can be seen from fig. 1 and 2, the dual-pawl safety lever device provided by the present utility model comprises a ratchet wheel 7 rotatably connected to the front part of a frame 19, a lever 3 radially disposed outward along the center of the ratchet wheel 7, and a pawl locking assembly; the lower end of the pressing lever 3 is fixedly connected with the ratchet wheel 7, the pressing lever 3 synchronously rotates along with the ratchet wheel 7, the upper end of the pressing lever 3 far away from the ratchet wheel 7 is provided with a hand lever 2 corresponding to a seat 10 of a frame 19, and the middle part of the pressing lever 3 is provided with a leg stop 4. In the actual use process, the passenger pulls the pressing lever 3 to rotate along with the ratchet wheel 7 along the anticlockwise direction shown in fig. 1, the hand lever 2 is close to the seat 10 and presses above the passenger's abdomen, the leg stop 4 is close to the passenger's leg and presses above the passenger's leg, when the pawl locking component axially locks the ratchet wheel 7, the handrail 1 is limited on the passenger's abdomen on the seat 10, the leg stop 4 is limited on the passenger's leg, and safety protection of the passenger is realized. Of course, when the pawl lock assembly is released from axial locking of the ratchet 7, the rider can push the hold down lever 3 to release the restraint of the grab bar 2 and the leg stops 4 and then get off.
In one particular embodiment of the present utility model, the pawl lock assembly may include a long pawl 8, a short pawl 9, a first transmission coupled to the long pawl 8, and a second transmission coupled to the short pawl 9; the long pawl 8 and the short pawl 9 are arranged in front of the ratchet wheel 7 side by side, the main body part of the long pawl 8 and the main body part of the short pawl 9 are both rotationally connected to the frame 19, and the end part of the long pawl 8 and the end part of the short pawl 9 are both matched with the ratchet wheel 7 (namely, the end parts can be clamped on the ratchet teeth on the ratchet wheel 7); and, the first transmission mechanism is used for controlling the long pawl 8 to axially lock and release the ratchet wheel 7, and the second transmission mechanism is used for controlling the short pawl 9 to axially lock and release the ratchet wheel 7.
The first transmission mechanism comprises a first pull rod 20, a second pull rod 22 and a first jacking rod 21, wherein one end of the first pull rod 20 is hinged with the middle part of the long pawl 8, the other end of the first pull rod 20 is hinged with one end of the second pull rod 22, and the other end of the second pull rod 22 is hinged with the upper end of the first jacking rod 21; the first lifting rod 21 is vertically arranged, the lower end of the first lifting rod 21 extends to the lower side of the frame 19 and is connected with a lifting power source, and a first lifting spring 15 is arranged at the position of the first lifting rod 21 below the frame 19. The second transmission mechanism comprises a third pull rod 23, a fourth pull rod 24 and a second lifting rod 25; wherein, one end of the third pull rod 23 is hinged with the middle part of the short pawl 9, the other end of the third pull rod 23 is hinged with one end of the fourth pull rod 24, and the other end of the fourth pull rod 24 is hinged with the upper end of the second jacking rod 25; the second lifting rod 25 is vertically arranged, the lower end of the second lifting rod 25 extends to the lower side of the frame 19 and is connected with a lifting power source, and a second lifting spring is arranged at the position of the second lifting rod 25 below the frame 19.
In addition, in order to achieve the return of the long pawl 8 and the segment pawl, a first return spring 13 is connected between the end of the long pawl 8 and the second support 17, and a second return spring is connected between the end of the short pawl 9 and the second support 17.
By means of the arrangement that the long pawl 8 and the short pawl 9 are different in length, the long pawl 8 is usually half the depth of the ratchet teeth of the ratchet wheel 7 longer than the short pawl 9, and the long pawl 8 and the short pawl 9 can be alternatively clamped on the ratchet wheel 7, namely, when the long pawl 8 is clamped on the ratchet wheel 7, the short pawl 9 is not clamped on the ratchet wheel 7; when the short pawl 9 is clamped on the ratchet wheel 7, the long pawl 8 is not clamped on the ratchet wheel 7, so that one pawl (the long pawl 8 or the short pawl 9) is clamped on the ratchet wheel 7 at any moment, and the safety of passengers is ensured.
In the actual use process, in the initial state, the pressing lever 3 is vertically upwards, the walking rod 2 is far away from the seat 10, and the first lifting rod 21 of the long pawl 8 and the second lifting rod 25 of the short pawl 9 respectively fall to the lowest positions under the action of the first lifting spring 15 and the second lifting spring. When the passenger presses the lever 3 downwards, the hand lever 2 slowly approaches the seat 10, the long pawl 8 and the short pawl 9 alternately slide through the gear teeth of the ratchet wheel 7, so that the requirements of different passengers are met, the function of reverse self-locking is achieved, when the handrail 1 presses the abdomen of the passenger, the leg stop 4 just limits the leg movable space of the passenger, and at the moment, the long pawl 8 and the short pawl 9 are respectively kept in contact with the ratchet wheel 7 all the time under the action of the first reset spring 13 and the second reset spring, so that the passenger is safely restrained on the seat 10.
When the pressing lever 3 needs to be opened, the first lifting rod 21 and the second lifting rod 25 are lifted by a lifting power source (such as a cylinder, a hydraulic cylinder, an electric push rod or an electro-hydraulic push rod, etc.), for example, the long pawl 8 is taken as an example, the first lifting rod 21 slides upwards and simultaneously drives the second pull rod 22 and the first pull rod 20 gradually to straighten the long pawl 8, so that the first pull rod 20 pulls the long pawl 8 to rotate clockwise, the long pawl 8 is far away from the ratchet 7, and the reverse self-locking function is released, and the short pawl 9 is also removed. At the moment, a passenger can push the hand lever 2 to lift the pressing lever 3, and when the pressing lever 3 is vertical in place, the air cylinder or the hydraulic cylinder descends; taking the long pawl 8 as an example, the first lifting rod 21 falls to the lowest position under the action of the first lifting spring 15, the first pull rod 20 and the second pull rod 22 are gradually loosened, the long pawl 8 rotates the long pawl 8 anticlockwise around the pawl shaft under the action of the first reset talk, the long pawl 8 contacts with the ratchet wheel 7, the short pawl 9 also returns, and finally the lever pressing device returns to the initial state.
In the experience type roller coaster, the double-pawl safety bar pressing device for restraining the legs and the abdomen of the passenger is adopted, and the passenger is safely restrained in the seat 10 through the cooperation with the seat 10, so that the aim of safely protecting the passenger is achieved, more free space can be provided for the upper half of the passenger, and the upper half of the passenger is liberated, so that the passenger can better participate in the interaction between the roller coaster and surrounding scenes. In various mechanical structures, the ratchet wheel 7 pawl mechanism is a unidirectional intermittent motion mechanism, namely under normal conditions, the ratchet wheel 7 can only move unidirectionally, and the reverse self-locking function is realized through the cooperation of the ratchet wheel 7 and the pawl, so that passengers cannot open the safety lever pressing device in the motion process of the roller coaster, the strength of the safety lever pressing device is higher, and the safety of the passengers is guaranteed. It should be noted that, for the safety press bar adopting the ratchet 7 pawl mechanism, the cooperation of the ratchet 7 pawl should ensure that the passengers have enough adaptation space, and the single stroke should not be too large so as to adapt to the passengers with different sizes.
In addition, in order to prevent friction between the first lifting rod 21 and the second lifting rod 25 and the frame 19 from damaging the first lifting rod 21 and the second lifting rod 25, shaft shoulders may be provided on both the first lifting rod 21 and the second lifting rod 25, and both the first lifting rod 21 and the second lifting rod 25 are slidably connected with the frame 19 through the shaft shoulders. When the first lifting rod 21 slides downwards through the elasticity of the first lifting spring, the shaft shoulder of the first lifting rod contacts with the frame 19, so that the functions of sliding guide and limiting are achieved; when the second lifting rod 25 slides downwards through the elasticity of the second lifting rod 25 spring, the shaft shoulder of the second lifting rod contacts with the frame 19, so that the functions of sliding guide and limiting are achieved.
In addition, in order to realize the hinging of the parts, the long pawl 8 and the first pull rod 20, the first pull rod 20 and the second pull rod 22 and the first lifting rod 21 can be hinged through pin shafts; the short pawl 9 and the third pull rod 23, the third pull rod 23 and the fourth pull rod 24 and the second pull rod 22 and the first lifting rod 21 can be hinged through pin shafts.
In addition, for realizing the installation of the ratchet wheel 7 and the pawl, a first support 12 can be fixed at the front part of the frame 19, and the ratchet wheel 7 is rotationally connected with the first support 12 through a first wheel shaft 11; a second support 17 may also be fixed to the front of the frame 19, the long pawl 8 and the short pawl 9 being each rotatably connected to the second support 17 by a second axle 18.
In addition, the double-pawl safety pressure bar device provided by the utility model can further comprise a buffer assembly, the buffer assembly comprises an air spring 6, the air spring 6 is a compression spring, one end of the air spring 6 is hinged with a ratchet wheel 7, and the other end of the air spring 6 is hinged with a third support 4 on the support. By providing the ratchet 7 with a buffer assembly, the air spring 6 needs to be gradually compressed when the passenger presses the lever 3, so that a buffer effect is achieved, and the walking rod 2 can be slowly close to the seat 10.
Of course, in order to facilitate the passenger to grasp the hand lever 2, it is also necessary to provide the handrail 1 at the upper end of the pressing lever 3, and the passenger can grasp the handrail 1 to press down the pressing lever 3.
According to the specific embodiment, the double-pawl safety press bar device provided by the utility model has the following advantages:
1. the ratchet wheel is matched with the pawl locking component to realize the reverse self-locking function of the pressing lever, so that passengers cannot open the pressing lever by themselves when riding the roller coaster, and the safety of the passengers is ensured.
2. The long pawl and the short pawl are lifted by the first transmission mechanism and the second transmission mechanism which are formed by the connecting rods, so that a pressing bar can be opened for passengers in the platform, and the passengers can get on and off conveniently;
3. through setting up two pawls and meshing with ratchet teeth in turn, can make the pressure lever adapt to different size passenger's demand, increase and take travelling comfort and security.
The double pawl safety lever device according to the present utility model is described above by way of example with reference to fig. 1 and 2. However, it will be appreciated by those skilled in the art that various modifications may be made to the dual pawl safety lever device of the present utility model as set forth above without departing from the spirit of the present utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (10)
1. The double-pawl safety lever pressing device is characterized by comprising a ratchet wheel, a lever pressing and pawl locking assembly, wherein the ratchet wheel is rotatably connected to the front part of a frame, and the lever pressing and pawl locking assembly is radially arranged along the ratchet wheel; the lower end of the pressing lever is fixedly connected with the ratchet wheel, the upper end of the pressing lever is provided with a hand lever corresponding to a seat of the frame, and the middle part of the pressing lever is provided with a leg stop; wherein, the liquid crystal display device comprises a liquid crystal display device,
the hand lever is used for limiting the abdomen of a passenger on the seat, the leg stop is used for limiting the legs of the passenger, and the pawl locking assembly is used for axially locking and releasing the ratchet wheel.
2. A dual pawl safety lever apparatus as defined in claim 1, wherein,
the pawl locking assembly comprises a long pawl, a short pawl, a first transmission mechanism connected to the long pawl and a second transmission mechanism connected to the short pawl; wherein, the liquid crystal display device comprises a liquid crystal display device,
the long pawl and the short pawl are arranged in front of the ratchet wheel side by side, the main body part of the long pawl and the main body part of the short pawl are both rotationally connected to the frame, and the end parts of the long pawl and the end parts of the short pawl are both matched with the ratchet wheel; and, in addition, the processing unit,
the first transmission mechanism is used for controlling the long pawl to axially lock and release the ratchet wheel, and the second transmission mechanism is used for controlling the short pawl to axially lock and release the ratchet wheel.
3. A dual pawl safety lever apparatus as defined in claim 2, wherein,
the first transmission mechanism comprises a first pull rod, a second pull rod and a first lifting rod; wherein, the liquid crystal display device comprises a liquid crystal display device,
one end of the first pull rod is hinged with the middle part of the long pawl, the other end of the first pull rod is hinged with one end of the second pull rod, and the other end of the second pull rod is hinged with the upper end of the first jacking rod;
the first lifting rod is vertically arranged, the lower end of the first lifting rod extends to the lower side of the frame and is connected with a lifting power source, and a first lifting spring is arranged at the position of the first lifting rod below the frame.
4. A dual pawl safety lever apparatus as defined in claim 3, wherein,
the second transmission mechanism comprises a third pull rod, a fourth pull rod and a second lifting rod; wherein, the liquid crystal display device comprises a liquid crystal display device,
one end of the third pull rod is hinged with the middle part of the short pawl, the other end of the third pull rod is hinged with one end of the fourth pull rod, and the other end of the fourth pull rod is hinged with the upper end of the second jacking rod;
the second lifting rod is vertically arranged, the lower end of the second lifting rod extends to the lower side of the frame and is connected with the lifting power source, and a second lifting spring is arranged at the position of the second lifting rod below the frame.
5. The dual pawl safety lever apparatus of claim 4,
the first lifting rod and the second lifting rod are respectively provided with a shaft shoulder, and the first lifting rod and the second lifting rod are respectively connected with the frame in a sliding manner through the shaft shoulders.
6. The dual pawl safety lever apparatus of claim 4,
the long pawl is hinged with the first pull rod through a pin shaft, and the first pull rod is hinged with the second pull rod and the second pull rod is hinged with the first lifting rod through a pin shaft;
the short pawl is hinged with the third pull rod, the third pull rod is hinged with the fourth pull rod, and the second pull rod is hinged with the first jacking rod through a pin shaft.
7. A dual pawl safety lever apparatus as defined in claim 2, wherein,
a first support is fixed at the front part of the frame, and the ratchet wheel is rotationally connected with the first support through a first wheel shaft;
the front part of the frame is also fixed with a second support, and the long pawl and the short pawl are respectively connected with the second support in a rotating way through a second wheel shaft.
8. The dual pawl safety lever apparatus of claim 7,
a first return spring is connected between the end part of the long pawl and the second support, and a second return spring is connected between the end part of the short pawl and the second support.
9. The dual pawl safety lever apparatus of claim 8,
the device comprises a ratchet wheel, a buffer assembly, a third support and a spring, wherein the buffer assembly comprises an air spring, one end of the air spring is hinged with the ratchet wheel, and the other end of the air spring is hinged with the third support on the support.
10. A dual pawl safety lever apparatus as defined in any one of claims 1 to 9,
an armrest is also arranged at the upper end of the pressing lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890348.5U CN219001954U (en) | 2022-10-31 | 2022-10-31 | Double-pawl safety lever pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890348.5U CN219001954U (en) | 2022-10-31 | 2022-10-31 | Double-pawl safety lever pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219001954U true CN219001954U (en) | 2023-05-12 |
Family
ID=86243832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222890348.5U Active CN219001954U (en) | 2022-10-31 | 2022-10-31 | Double-pawl safety lever pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219001954U (en) |
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2022
- 2022-10-31 CN CN202222890348.5U patent/CN219001954U/en active Active
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