CN213364101U - Device for detecting expansion force of rescue tool - Google Patents
Device for detecting expansion force of rescue tool Download PDFInfo
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- CN213364101U CN213364101U CN202022744172.3U CN202022744172U CN213364101U CN 213364101 U CN213364101 U CN 213364101U CN 202022744172 U CN202022744172 U CN 202022744172U CN 213364101 U CN213364101 U CN 213364101U
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- expansion force
- cross beam
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- base
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Abstract
The utility model belongs to the technical field of the rescue instrument, a device for rescue instrument expansion force detects is provided, specifically include: an upper beam and a base; two guide posts and two oil cylinders are arranged between the upper cross beam and the base, the upper ends of the guide posts and the oil cylinders are respectively and fixedly connected with the upper cross beam, the lower ends of the guide posts and the oil cylinders are respectively and fixedly connected with the base, the guide posts are telescopic, the oil cylinders further comprise pistons, and the upper cross beam can move up and down along with the pistons; the upper cross beam is connected with an upper chuck through an extension rod, the lower chuck is connected with a pressure sensor through a chuck seat, and the pressure sensor is connected with the base through a sensor seat. The utility model discloses the device is used for testing the load value of rescue instrument under the condition of given displacement volume, and measurement accuracy is high.
Description
Technical Field
The utility model relates to a rescue instrument technical field especially relates to a device that is used for rescue instrument expansion force to detect.
Background
In the rescue of road rescue or building collapse, rescue workers often use rescue tools such as hydraulic expanding pliers or shearing pliers and the like to break and dismantle members which obstruct rescue on site, so that the rescue work is facilitated to be carried out smoothly.
Besides daily maintenance, the rescue tool must be regularly detected to ensure the stable and reliable function of the rescue tool in the rescue implementation process to the maximum extent. Therefore, a detection device for the expansion force of the rescue tool is designed, and needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a device for rescue instrument expansion force detects.
A device for rescue tool expansion force detection specifically includes:
an upper beam and a base;
two guide posts and two oil cylinders are arranged between the upper cross beam and the base, the upper ends of the guide posts and the oil cylinders are respectively and fixedly connected with the upper cross beam, the lower ends of the guide posts and the oil cylinders are respectively and fixedly connected with the base, the guide posts are telescopic, the oil cylinders further comprise pistons, and the upper cross beam can move up and down along with the pistons;
the upper cross beam is connected with an upper chuck through an extension rod, the lower chuck is connected with a pressure sensor through a chuck seat, and the pressure sensor is connected with the base through a sensor seat.
Preferably, the guide post comprises an upper guide post and a lower guide post, and the upper guide post and the lower guide post are connected through positioning threads.
Preferably, the upper guide post and the lower guide post are further provided with a limiting plate and a positioning ring arranged below the limiting plate and used for positioning.
Preferably, the pressure sensor is a spoke type load sensor.
Preferably, the rescue tool device further comprises a balance block and a pulley arranged on the guide rail sliding frame on the upper cross beam, one end of the suspension cable is connected with the balance block, and the other end of the suspension cable crosses over the pulley to be connected with the rescue tool to be detected.
Preferably, the upper cross beam, the extension bar and the upper chuck are detachably connected, and the lower chuck, the chuck base, the pressure sensor, the sensor base and the base are detachably connected.
Preferably, the device further comprises a stretching device arranged on the guide post.
Preferably, the extension device comprises a first photoelectric encoder and a second photoelectric encoder, and the first photoelectric encoder and the second photoelectric encoder are respectively used for measuring the displacement of the upper chuck and the lower chuck.
The utility model discloses following beneficial effect has:
1. the system adopts a proportional servo control mode, and has high control precision;
2. the upper chuck is connected with the upper cross beam through the extension bar, when the extension bar and the upper chuck are connected, the upper chuck is fixedly connected with an upper jaw of a rescue tool to be detected through a pin, the distance between the upper chuck and the pin is smaller than zero, so that any rescue tool such as similar expanding pliers can be conveniently installed on the device for detection, the extension bar and the chuck seat do not need to be changed, and the operation convenience is improved;
3. the upper cross beam, the extension bar and the upper chuck can be detachably connected, and the lower chuck, the chuck seat, the pressure sensor, the sensor seat and the base can be detachably connected, so that the disassembly and the assembly are convenient;
4. meanwhile, when the ejector rod needs to be detected, the chuck seat and the extension rod can be conveniently detached, the ejector rod pressing heads are respectively installed on the sensor and the upper cross beam, the upper cross beam moves up and down to be adjusted, and the ejector rod can be installed for detection, so that the applicability of the device for detecting the expansion force of the rescue tool is improved, and the detection cost of the rescue tool is favorably reduced;
5. the method comprises the following steps that a spoke type load sensor is used for measuring a load value of a rescue tool to be detected when a target displacement is given, so that the obtained load precision is improved, the capacity of the sensor is 1000KN, and the precision can reach 0.05%;
6. the device for detecting the expansion force of the rescue tool is also provided with an extension device, the displacement of the upper chuck and the displacement of the lower chuck are measured by using two photoelectric encoders, and differential processing is carried out to obtain the creep deformation of the rescue tool to be detected under a given load, so that the measurement precision is high;
7. set up the balancing piece, before the testing, place the rescue instrument of treating earlier on installing the limiting plate between guide post and the lower guide post, stride across the pulley with the other end of the span wire of one end connection balancing piece, with the rescue instrument of treating and detect and be connected, place the balanced weight on the couple of balancing piece, the weight of the rescue instrument of treating until treating is balanced by the weight of balancing piece, consequently, any barycenter of the rescue instrument of treating is taken place to remove and can not arouse this detection device's additional load, further improve the precision of detection.
Drawings
1. Fig. 1 is a schematic structural diagram of a device for detecting an expansion force of a rescue tool according to an embodiment of the present invention;
2. fig. 2 is a top view of a device for detecting an expansion force of a rescue tool according to an embodiment of the present invention;
3. fig. 3 is a schematic structural diagram of a device for detecting an expansion force of a rescue tool, provided by an embodiment of the present invention, after a rescue tool to be detected is mounted on the device;
4. fig. 4 is a schematic view of a hydraulic principle of a dual-cylinder driven hydraulic pump provided by an embodiment of the present invention.
Detailed Description
In order to make the understanding of the device for detecting the expansion force of the rescue tool more clear to those skilled in the art, the following detailed description will be made with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a device for detecting an expansion force of a rescue tool, wherein the whole frame of the device is a structure with a double cross beam and four columns, including an upper cross beam 1 and a base 2, the base 2 is used as a lower cross beam, two guide posts 3 and two oil cylinders 4 are arranged between the upper cross beam 1 and the base 2, the upper ends of the guide posts 3 and the oil cylinders 4 are respectively and fixedly connected with the upper cross beam 1, the lower ends of the guide posts 3 and the oil cylinders 4 are respectively and fixedly connected with the base 2, and the guide posts 3 are telescopic, the oil cylinders 4 further include pistons, and the upper cross beam can move up and down along with the pistons; wherein, two piston assemblies of two hydro-cylinders 4 act as two other stands, consequently, constitute the structure of two crossbeams and four stands.
Preferably, the two guide posts 3 are both of two-section structures, and each guide post comprises an upper guide post 31 and a lower guide post 32, and the upper guide post 31 is connected with the lower guide post 32 through positioning threads. And preferably, a limiting plate 33 and a positioning ring 34 are further installed between the upper guide post 31 and the lower guide post 32, and are arranged below the limiting plate for positioning. The position and the positioning of the limiting plate 33 can be flexibly adjusted. Wherein, limiting plate 33 can regard as horizontal stop device's base to use when needing to do the eccentric loading test of top stay bar to improve the utility model is used for the suitability of the device that rescue instrument expansion force detected is favorable to reducing the detection cost of rescue instrument.
The upper cross beam 1 is connected with an upper chuck 5 through an extension bar 51, the lower chuck 6 is connected with a pressure sensor 62 through a chuck seat 61, and the pressure sensor 62 is connected with the base 2 through a sensor seat.
When the device is used, when the extension bar and the upper chuck are connected, the upper chuck is fixedly connected with an upper jaw of a rescue tool to be detected through the pin, the distance between the upper chuck and the pin is smaller than zero, so that the rescue tools such as any similar expanding pliers can be conveniently installed on the device for detection, the extension bar and the chuck seat do not need to be changed, and the operation convenience is improved.
Preferably, the pressure sensor 62 is a spoke load sensor with a capacity of 1000KN and an accuracy of 0.05%. The method is used for measuring the load value of the rescue tool to be detected when the target displacement is given, and the obtained load precision is improved.
Preferably, the upper cross beam 1, the extension bar 51 and the upper clamp 5 are detachably connected, and the lower clamp 6, the clamp seat 61, the pressure sensor 62, the sensor seat and the base 2 are detachably connected. The convenient dismantlement and the equipment, because its mounting hole diameter that detects usefulness of different rescue tools is different to conveniently change the chuck of different forms, detect with the expansion force that adapts to different rescue tools.
And simultaneously, when needs use the embodiment of the utility model provides a device for rescuing instrument expansion force detects is experimental to the ejector pin when, and is further, can conveniently demolish chuck, chuck seat, extension bar, respectively installs an ejector pin pressure head on sensor and entablature, reciprocates the entablature and adjusts, can install the ejector pin and detect, thereby improves the utility model is used for the suitability of the device that rescuing instrument expansion force detected is favorable to reducing the detection cost of rescuing instrument.
Preferably, the ejector rod pressure head is designed according to the maximum diameter of the head of the ejector rod, when a detection test is carried out on a smaller ejector rod, only one metal sleeve needs to be padded in the ejector rod pressure head, no other parts need to be added, the operation is simple, and the cost is reduced.
It should be noted that the detection principle of the device for detecting the expansion force of the rescue tool provided by the present invention is as follows, as shown in fig. 3:
inserting a lower jaw of a rescue tool 10 to be detected into a lower chuck 6 and fixing the lower jaw by using a pin; moving the upper beam 1 up and down to make the displacement difference between the upper chuck 5 and the lower chuck 6 reach the set target value; fixedly connecting an upper jaw of a rescue tool 10 to be detected with an upper chuck 5 through a pin; and starting the hydraulic pump to enable the rescue tool 10 to be detected to generate expansion force, and measuring the expansion force value of the opening distance of the rescue tool 10 to be detected at the set target value by using the pressure sensor.
In order to measure the displacement difference between the upper chuck and the lower chuck, the embodiment of the present invention further designs an extension device 9 installed on the guide post 3, which includes a first photoelectric encoder 91 and a second photoelectric encoder 92, wherein the first photoelectric encoder 91 and the second photoelectric encoder 92 are respectively used for measuring the displacement of the upper chuck 5 and the lower chuck 6, and performing differential processing according to the displacement of the upper chuck 5 and the lower chuck 6 to obtain the displacement difference between the upper chuck 5 and the lower chuck 6, and when the displacement difference reaches a set target value; fixedly connecting an upper jaw of a rescue tool 10 to be detected with an upper chuck 5 through a pin; and starting the hydraulic pump to enable the rescue tool 10 to be detected to generate expansion force, and measuring the expansion force value of the opening distance of the rescue tool 10 to be detected at the set target value by using the pressure sensor, so that the measurement precision is high. Wherein the maximum gauge length of the extension device is 1600mm, and the deformation test resolution is 5 mu m.
Preferably, the utility model discloses a device for rescue instrument expansion force detects still include balancing piece 7 with set up in pulley 81 on the guide rail balladeur train 8 on the entablature, the one end of span wire 82 is connected balancing piece 7, the other end stride pulley 81 is connected with the rescue instrument 10 that awaits measuring.
Specifically, before inserting the lower jaw of the rescue tool 10 to be detected into the lower chuck 6, the rescue tool 10 to be detected is placed on the limiting plate 33 installed between the upper guide post 31 and the lower guide post 32; the other end of a suspension cable 82 with one end connected with the balance weight 7 strides over a pulley 81 and is connected with the rescue tool 10 to be detected; and placing a balance weight on the hook of the balance weight 7 until the weight of the rescue tool 10 to be detected is balanced by the weight of the balance weight 7. Therefore, any mass center of the rescue tool to be detected moves, so that the additional load of the detection device cannot be caused, and the detection precision is further improved.
As shown in fig. 4, what the utility model was used for device that rescue instrument expansion force detected adopted is two hydro-cylinder drive hydraulic pumps, and the stroke is great moreover, has designed 4 choke valves for the flow of adjusting the hydro-cylinder guarantees that two hydro-cylinders are synchronous. And, the utility model discloses the proportion servo control mode that detection device adopted, control accuracy is high.
To sum up, the utility model is used for device that rescue instrument expansion force detected has that control accuracy is high, the operation is convenient, simple, the suitability is strong, with low costs and detect the high beneficial effect of precision.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein by using specific embodiments, and the above description of the embodiments is only used to help understand the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. A device for rescue tool expansion force detection, comprising:
an upper cross beam (1) and a base (2);
two guide columns (3) and two oil cylinders (4) are arranged between the upper cross beam (1) and the base (2), the upper ends of the guide columns (3) and the oil cylinders (4) are respectively and fixedly connected with the upper cross beam (1), the lower ends of the guide columns (3) and the oil cylinders (4) are respectively and fixedly connected with the base (2), the guide columns (3) are telescopic, the oil cylinders (4) further comprise pistons, and the upper cross beam (1) can move up and down along with the pistons;
the upper cross beam (1) is connected with an upper chuck (5) through an extension rod (51), a lower chuck (6) is connected with a pressure sensor (62) through a chuck seat (61), and the pressure sensor (62) is connected with the base (2) through a sensor seat.
2. The device for detection of expansion force of rescue tool as claimed in claim 1, characterized in that the guide post (3) comprises an upper guide post (31) and a lower guide post (32), and a positioning screw connection is adopted between the upper guide post (31) and the lower guide post (32).
3. The device for detecting the expansion force of the rescue tool as claimed in claim 2, wherein a limiting plate (33) is further installed between the upper guide column (31) and the lower guide column (32), and a positioning ring (34) is disposed below the limiting plate (33) for positioning.
4. The device for detection of rescue tool expansion force according to claim 1, characterized in that the pressure sensor (62) is a spoke-type load sensor.
5. The device for detecting the expansion force of the rescue tool as claimed in claim 1, further comprising a balance weight (7) and a pulley (81) arranged on a guide rail carriage (8) on the upper cross beam (1), wherein one end of a suspension cable (82) is connected with the balance weight (7), and the other end of the suspension cable is connected with the rescue tool (10) to be detected across the pulley (81).
6. The device for detection of expansion force of rescue tool as claimed in claim 1, characterized in that the upper cross beam (1), the extension bar (51) and the upper clamping head (5) are detachably connected to each other, and the lower clamping head (6), the clamping head seat (61), the pressure sensor (62), the sensor seat and the base (2) are detachably connected to each other.
7. Device for rescue tool expansion force detection according to claim 1, characterized by further comprising a guiding device (9) mounted on the guide post (3).
8. Device for rescue tool expansion force detection according to claim 7, characterized in that the extension device (9) comprises a first photoelectric encoder (91) and a second photoelectric encoder (92), the first photoelectric encoder (91) and the second photoelectric encoder (92) being used for measuring the displacement of the upper grip (5) and the lower grip (6), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022744172.3U CN213364101U (en) | 2020-11-24 | 2020-11-24 | Device for detecting expansion force of rescue tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022744172.3U CN213364101U (en) | 2020-11-24 | 2020-11-24 | Device for detecting expansion force of rescue tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213364101U true CN213364101U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022744172.3U Active CN213364101U (en) | 2020-11-24 | 2020-11-24 | Device for detecting expansion force of rescue tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213364101U (en) |
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2020
- 2020-11-24 CN CN202022744172.3U patent/CN213364101U/en active Active
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