A tightening device with a seat cushion

Abstract

The utility model relates to a tightening device with a seat cushion, comprising a frame for bearing, a driving mechanism and a tightening mechanism, wherein the driving mechanism is used to drive the tightening mechanism, and is characterized in that it also comprises a seat cushion, wherein the seat cushion is mounted on the top of the frame, and the tightening mechanism is mounted on one side of the frame. The utility model has the seat cushion mounted on the top of the frame, and when an operator performs joint tightening work, the height of the operator's operating position is lowered by sitting on the top of the tightening device, and the center of gravity of the body is transferred to the ischium position by the sitting posture, so that fatigue damage to the knee joint and the waist and back will not be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to an expansion device with a seat cushion. Background Art

[0002] Inflatable water hoses (such as forest water hoses) play a vital role in forest fire prevention. Their main function is to transport water from the water source to the fire scene to form a water hose to cover the fire area, thereby preventing the spread of fire and achieving the purpose of extinguishing the fire.

[0003] Internal expansion hoses are usually used in conjunction with internal buckle joints (such as forest joints). The interface is connected through an internal expansion hose (hereinafter referred to as the hose) and an internal buckle joint (hereinafter referred to as the joint). A copper sleeve is provided inside the joint. The hose is inserted into the gap between the copper sleeve and the joint, and then the expansion device is inserted into the copper sleeve. The copper sleeve is expanded and deformed by the expansion device so that the joint can be tightly installed on the hose.

[0004] In the prior art, water hoses and joints are installed by means of expansion equipment. Traditional expansion equipment is a large-volume structure composed of gas tanks and cylinders, which is placed in factories for assembly line production. However, during forest fire rescue, there is often a shortage of water hoses for firefighting and the water hoses are damaged and need to be repaired in time. It is necessary to connect the joints to the water hoses in real time at the rescue site. In order to be able to install the joints at the fire rescue site, a portable expansion equipment is required; due to the small size of the portable expansion equipment, when the expansion equipment is placed on site, the expansion working position of the expansion equipment is too low, and the operator needs to squat or bend down to make the operating position of both hands flush with the working position of the expansion equipment. Operating the expansion equipment in the above manner will lead to inconvenience and labor-saving work, and squatting and bending down for a long time will easily cause fatigue and physical damage to the operator's knee joints and waist and back. Utility Model Content

[0005] The first aspect of the utility model aims to solve the technical problems of inconvenient operation and great physical fatigue damage of portable tensioning equipment used in firefighting and rescue scenarios, and provides a tensioning device with a cushion, which can improve the operating posture and work efficiency by installing a cushion for the operator to sit on at the upper end of the tensioning device and arranging a frame in the tensioning device to support the weight of the cushion. The main concept is:

[0006] A tightening device with a seat cushion comprises a frame for bearing, a driving mechanism and a tightening mechanism, wherein the driving mechanism is used to drive the tightening mechanism, and further comprises a seat cushion, wherein the seat cushion is mounted on the top of the frame, and the tightening mechanism is mounted on one side of the frame. In this solution, a frame is arranged inside the tightening device, and the function of the frame is to enhance the strength of the tightening device, and a seat cushion is mounted on the top of the frame, so that when an operator sits on the top of the tightening device through the seat cushion, the frame can bear the weight of the human body, thereby avoiding deformation and damage to the main body of the tightening device, and in this solution, the seat cushion is mounted on the top of the frame, and when the operator is tightening the joint, the height of the operator's operating position is lowered by sitting on the top of the tightening device, and the center of gravity of the body is transferred to the ischium position through the sitting posture, which will not cause fatigue damage to the knee joint and the waist and back.

[0007] Preferably, the seat cushion comprises an inner core and a sheath, and the inner core is covered with the sheath. The inner core of the present solution is filled with a material having resilience, which can improve the comfort of the seat cushion, and the inner core is covered with a sheath made of a high-temperature resistant material, so that the seat cushion will not be damaged by high temperature in a firefighting and rescue environment.

[0008] Preferably, the height of the frame is 400-1000 mm. Setting the overall height of the frame within the range of 400-1000 mm makes the overall structure of the device compact and enables the operator to sit on the cushion with both feet on the ground to provide balance for the body.

[0009] Preferably, the skeleton includes a first support frame and a second support frame, the first support frame is mounted on the upper end of the second support frame, the first support frame and the second support frame are rectangular frame structures, a hydraulic cylinder is mounted in the first support frame, and a booster oil pump station is mounted in the second support frame. The skeleton is combined through two different support frames, and the first support frame is mounted above the second support frame in a vertically overlapping manner, so that the overall structure of the expansion device is more compact, and the hydraulic cylinder is mounted in the first support frame at the upper end of the skeleton, which can further relatively increase the working height of the hydraulic cylinder.

[0010] Preferably, the driving mechanism includes a booster oil pump station and a hydraulic cylinder, the hydraulic cylinder includes a conical expansion shaft and a cylinder body, the conical expansion shaft is transmission-connected to the cylinder body, the cylinder body is connected to the booster oil pump station through an oil pipe, the expansion mechanism is a cylindrical structure, the conical expansion shaft is inserted into the middle position of the expansion mechanism, the conical expansion shaft is used to radially push the expansion mechanism, and the expansion mechanism is used to extrude the copper sleeve inside the joint. The cylinder body of the hydraulic cylinder is connected to the booster oil pump station through an oil pipe. The booster oil pump station adjusts the direction, pressure and flow of the hydraulic oil through a hydraulic valve and transmits it to the cylinder body of the hydraulic cylinder through an external oil pipe, thereby controlling the change of direction, force and speed of the tapered expansion shaft at the output end of the cylinder body, and pushing the tapered expansion shaft to reciprocate in the expansion device; the operator sits on the seat cushion, sets the joint and the water hose on the expansion mechanism, turns on the driving mechanism to make the tapered expansion shaft act on the expansion mechanism, so that the expansion mechanism is pushed in the radial direction, so that the copper sleeve coaxially arranged inside the joint is squeezed and deformed, and the deformed copper sleeve tightly connects the water hose and the joint.

[0011] Preferably, a shell is installed on the outside of the skeleton, and a through hole is provided on the side of the shell close to the output end of the hydraulic oil cylinder, and an annular mounting frame is arranged in the through hole, and the annular mounting frame is used to position the hydraulic oil cylinder. The installation of the shell can prevent dust from affecting the internal working environment of the expansion device as a whole, and a through hole is provided on the side of the shell close to the output end of the hydraulic oil cylinder. The installation of the through hole can enable the conical expansion shaft at the output end of the hydraulic oil cylinder to extend to the outside of the shell, and then the annular mounting frame is installed in the through hole to support the cylinder body on the output end side of the hydraulic oil cylinder, thereby improving the stability of the hydraulic oil cylinder when working.

[0012] The second aspect of the utility model aims to solve the technical problem that the hydraulic cylinder drives the expansion mechanism to perform expansion in the prior art and is prone to deviation. Further, the expansion mechanism includes an expansion sleeve and a plurality of expansion sliders, the expansion sleeve is installed on the output end face of the hydraulic cylinder, a plurality of slide grooves are provided in the radial direction of the expansion sleeve, a plurality of the expansion sliders are slidably connected with the slide grooves, the plurality of expansion sliders are in an annular structure, and a circumferential spring is installed on the outside of the plurality of expansion sliders. The expansion sleeve of the expansion mechanism is installed on the end face of the hydraulic cylinder, the conical expansion shaft of the hydraulic cylinder and the expansion mechanism are not easily displaced, and the hydraulic cylinder is positioned and installed through an annular mounting frame, so that the output end of the cylinder body, the conical expansion shaft reciprocating in the cylinder body and the expansion sleeve are coaxially arranged, and the precision of the expansion action of the joint between the driving mechanism and the expansion mechanism is improved. The circumferential spring is used to install the outside of the expansion slider, and the circumferential spring can keep the plurality of expansion sliders moving synchronously during expansion and resetting.

[0013] Preferably, a micro switch is installed on the expansion sleeve, and the expansion sleeve is electrically connected to the driving mechanism. The expansion sleeve is used to position the joint. When the joint is positioned on the expansion sleeve, the micro switch provided on the expansion sleeve triggers the conical expansion shaft of the hydraulic cylinder to reciprocate and drive the expansion slider to expand the joint.

[0014] Preferably, it also includes a transfer mechanism, which is arranged at the bottom of the frame and is used to move the expansion device.

[0015] Preferably, a locker is further included, and the locker is arranged in the second support frame of the frame, and the locker is equipped with a door opening upward. The locker arranged inside the frame of the expansion device can be used to place spare joints and tools, so that the expansion device can also have a storage function, and the locker is equipped with a door opening upward, so that the operator can directly take out the tools while sitting on the cushion of the expansion device.

[0016] The beneficial effects of the utility model are:

[0017] A frame is arranged inside the tensioning device, and the function of the frame is to improve the strength of the tensioning device, and a cushion is installed on the top of the frame, so that when the operator sits on the top of the tensioning device through the cushion, the frame can bear the weight of the human body to avoid deformation and damage to the tensioning device body. In addition, the cushion is installed on the top of the frame in this scheme. When the operator is performing joint tensioning work, sitting on the top of the tensioning device lowers the height of the operator's operating position, and the center of gravity of the body is transferred to the ischium position through the sitting posture, which will not cause fatigue damage to the knee joints and waist and back. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0019] Figure 2 It is a structural schematic diagram of the framework of the utility model.

[0020] Figure 3 The structure of the utility model is shown in FIG. Figure 2 .

[0021] Figure 4 It is a partial enlarged view of the utility model.

[0022] Figure 5 It is a structural cross-sectional view of the utility model.

[0023] The reference numerals include: 1. seat cushion; 2. frame; 21. first support frame; 22. second support frame; 3. booster oil pump station; 4. hydraulic cylinder; 41. conical expansion shaft; 5. storage cabinet; 51. cabinet door; 6. shell; 61. annular support frame; 7. expansion mechanism; 71. expansion sleeve; 72. expansion slider; 73. micro switch; 8. transfer mechanism. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0025] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0026] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance. Example 1

[0027] like Figure 1-Figure 2 As shown, a tensioning device with a seat cushion in this embodiment includes a frame 2 for bearing, a driving mechanism and a tensioning mechanism 7, wherein the driving mechanism is used to drive the tensioning mechanism 7, and is characterized in that it also includes a seat cushion 1, wherein the seat cushion 1 is installed on the top of the frame 2, and the tensioning mechanism 7 is installed on one side of the frame.

[0028] In the present embodiment, a frame 2 is provided inside the tensioning device. The function of the frame 2 is to enhance the strength of the tensioning device, and a seat cushion 1 is installed on the top of the frame 2, so that when the operator sits on the top of the tensioning device through the seat cushion 1, the frame 2 can bear the weight of the human body to avoid deformation and damage to the tensioning device body; and the present solution installs the seat cushion 1 on the top of the frame 2. When the operator is performing joint tensioning work, sitting on the top of the tensioning device lowers the height of the operator's operating position, and the center of gravity of the body is transferred to the ischium position through the sitting posture, which will not cause fatigue damage to the knee joints and the waist and back.

[0029] The seat cushion 1 of this embodiment includes an inner core and a sheath, wherein the inner core is covered with the sheath. The inner core is filled with a material having resilience, which can improve the comfort of the seat cushion 1, and the inner core is covered with a sheath made of a high-temperature resistant material, so that the seat cushion 1 will not be damaged by high temperature in a firefighting and rescue environment.

[0030] like Figure 2 As shown, the height of the frame 2 is 400-1000 mm, which makes the overall structure of the equipment compact and enables the operator to sit on the cushion with both feet on the ground to provide balance for the body.

[0031] The skeleton 2 includes a first support frame 21 and a second support frame 22. The first support frame 21 is installed on the upper end of the second support frame 22. The first support frame 21 and the second support frame 22 are rectangular frame structures. The hydraulic cylinder 4 is installed in the first support frame 21, and the booster oil pump station 3 is installed in the second support frame 22.

[0032] The skeleton 2 is combined through two different support frames, and the first support frame 21 is installed above the second support frame 22 by vertical overlapping, so that the overall structure of the tensioning equipment is more compact, and the hydraulic cylinder 4 is installed in the first support frame 21 at the upper end of the skeleton 2, which can further increase the working height of the hydraulic cylinder 4.

[0033] like Figure 1-Figure 2 As shown, the driving mechanism includes a boost oil pump station 3 and a hydraulic cylinder 4. The hydraulic cylinder 4 includes a tapered expansion shaft 41 and a cylinder body 42. The tapered expansion shaft 41 is transmission-connected to the cylinder body 42. The cylinder body 42 is connected to the boost oil pump station 3 through an oil pipe. The expansion mechanism 7 is a cylindrical structure. The tapered expansion shaft 41 is inserted into the middle position of the expansion mechanism 7. The tapered expansion shaft 41 is used to radially push the expansion mechanism 7. The expansion mechanism 7 is used to extrude the copper sleeve inside the joint.

[0034] The cylinder body 42 of the hydraulic cylinder 4 is connected to the booster oil pump station 3 through an oil pipe. The booster oil pump station 3 adjusts the direction, pressure and flow of the hydraulic oil through a hydraulic valve and then transmits it to the cylinder body 42 of the hydraulic cylinder 4 through an external oil pipe, thereby controlling the change of direction, force and speed of the tapered expansion shaft 41 at the output end of the cylinder body 42, and pushing the tapered expansion shaft 41 to reciprocate in the expansion device.

[0035] Furthermore, the driving mechanism is electrically connected to a power supply assembly, which supplies power to the driving mechanism and other electrical devices. The power supply assembly includes a battery and a power cord. The battery is installed inside the expansion device, so that the power supply assembly can be transported and moved synchronously with the expansion device.

[0036] The battery is connected to the drive assembly; one end of the power cord is connected to the battery, and the other end is connected to the aviation socket, which can be set on the housing 6. When in use, the connecting wires with an external aviation plug connector can be connected to the mains and the aviation sockets of the battery respectively, the connecting wires power the battery, and the battery powers the driving assembly and other electrical devices. This connection method can ensure continuous power supply and can also charge the battery, which can play a role when there is no mains interface or power outage outdoors. At the same time, the voltage of the battery can improve the stability of the power output voltage and ensure the normal operation of the equipment.

[0037] The operator sits on the seat 1, puts the joint and the water hose on the expansion mechanism 7, turns on the driving mechanism so that the conical expansion shaft 41 acts on the expansion mechanism 7, so that the expansion mechanism 7 expands in the radial direction, squeezes and deforms the copper sleeve coaxially arranged inside the joint, and the deformed copper sleeve fastens the water hose and the joint. Example 2

[0038] like Figure 3-5 As shown, a shell 6 is installed on the outside of the skeleton 2 of this embodiment. A through hole is opened on the side of the shell 6 close to the output end of the hydraulic cylinder 4. An annular mounting frame 61 is arranged in the through hole. The annular mounting frame 61 is used to position the hydraulic cylinder 4.

[0039] The installation of the shell 6 can provide dust-proof effect for the entire expansion device and avoid affecting the internal working environment of the expansion device. A through hole is opened on the side of the shell 6 close to the output end of the hydraulic cylinder 4. The installation of the through hole can enable the conical expansion shaft 41 at the output end of the hydraulic cylinder 4 to extend to the outside of the shell 6, and then an annular mounting frame 61 is installed in the through hole to support the cylinder body 42 on the output end side of the hydraulic cylinder 4, thereby improving the stability of the hydraulic cylinder 4 during operation.

[0040] The expansion mechanism 7 includes an expansion sleeve 71 and a plurality of expansion sliders 72. The expansion sleeve 71 is installed on the output end face of the hydraulic cylinder 4. A plurality of slide grooves are provided in the radial direction of the expansion sleeve 71. The plurality of expansion sliders 72 are slidably connected to the slide grooves. The plurality of expansion sliders 72 cooperate with each other to form a ring structure. Circumferential springs are installed on the outer sides of the plurality of expansion sliders 72.

[0041] In order to achieve better working effect, the expansion slider 72 of this embodiment adopts a wedge-shaped slider, the wedge-shaped surface of the wedge-shaped slider abuts against the outer wall of the tapered expansion shaft 41, a vertical columnar slider seat is installed on the side where the expansion slider 72 is connected to the expansion sleeve 71, and the radially opened slide groove of the expansion sleeve 71 is a columnar slide groove, so that the columnar slider seat of the expansion slider is slidably connected with the columnar slide groove, and when the tapered expansion shaft 41 moves axially in the expansion mechanism 7, when the outer diameter of the tapered expansion shaft continues to increase, the outer wall of the tapered expansion shaft 41 applies an outward sliding force to the expansion slider 72, so that the outer diameter of the expansion slider after expansion increases. Since the outer sleeve of the expansion slider 72 is provided with a copper sleeve inside the interface, when the expansion slider 72 continuously applies an outward force in the radial direction to squeeze the copper sleeve toward the interface, the water hose set between the joint and the copper sleeve inside the joint is tightly connected with the joint after being deformed by expansion.

[0042] The expansion sleeve 71 of the expansion mechanism 7 is installed on the end face of the hydraulic cylinder 4. The conical expansion shaft 41 of the hydraulic cylinder 4 and the expansion mechanism are not easily displaced, and the hydraulic cylinder 4 is positioned and installed by the annular mounting frame 61, so that the output end of the cylinder body 42, the conical expansion shaft 41 reciprocating in the cylinder body 42 and the expansion sleeve 7 are kept coaxially arranged, thereby improving the accuracy of the expansion effect on the joint between the driving mechanism and the expansion mechanism.

[0043] In this embodiment, a circumferential spring is installed on the outer side of the expansion slider 72. The circumferential spring can enable multiple expansion sliders to maintain synchronous movement during expansion and resetting.

[0044] like Figure 4 As shown, a micro switch 73 is installed on the expansion sleeve 71 of this embodiment, and the micro switch 73 is electrically connected to the driving mechanism.

[0045] The expansion sleeve 71 is used to position the joint. When the joint is positioned on the expansion sleeve 71, the micro switch 73 provided on the expansion sleeve 71 triggers the conical expansion shaft 41 of the hydraulic cylinder 4 to reciprocate and drive the expansion slider 72 to expand the joint. Example 3

[0046] like Figure 5 As described above, based on the above-mentioned embodiment, the expansion device of this embodiment further includes a transfer mechanism 8, and the transfer mechanism 8 is arranged at the bottom of the frame 2, and the transfer mechanism 8 is used to move the expansion device.

[0047] The transfer mechanism 8 of this embodiment adopts universal wheels, which are respectively arranged at the four corners of the bottom of the tensioning device, so that the universal wheels can stably support and stably slide the tensioning device.

[0048] The expansion device also includes a locker 5, which is arranged in the second support frame 22 of the frame 2, and is equipped with a door 51 that opens upward. The locker 5 is arranged inside the frame 2 of the expansion device, which can be used to place spare joints and tools, so that the expansion device can also have a storage function, and the locker 5 is equipped with a door 51 that opens upward, so that the operator can directly take them while sitting on the cushion of the expansion device.

[0049] This equipment is preferably used to connect internal expansion hoses and internal buckle joints, and will not be described in detail below.

[0050] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A tightening device with a seat cushion, comprising a frame (2) for bearing, a driving mechanism and an tightening mechanism (7), wherein the driving mechanism is used to drive the tightening mechanism (7), and is characterized in that: It also comprises a seat cushion (1), wherein the seat cushion (1) is mounted on the top of the frame (2), and the expansion mechanism (7) is mounted on one side of the frame.

2. The expansion device with a seat cushion according to claim 1, characterized in that: The seat cushion (1) comprises an inner core and a protective cover, wherein the inner core is covered with the protective cover.

3. The expansion device with a seat cushion according to claim 1, characterized in that: The height of the frame (2) is 400-1000 mm.

4. The expansion device with a seat cushion according to claim 1, characterized in that: The skeleton (2) comprises a first support frame (21) and a second support frame (22); the first support frame (21) is mounted on the upper end of the second support frame (22); the first support frame (21) and the second support frame (22) are rectangular frame structures; a hydraulic cylinder (4) is mounted in the first support frame (21); and a booster oil pump station (3) is mounted in the second support frame (22).

5. The expansion device with a seat cushion according to claim 1, characterized in that: The driving mechanism comprises a boosting oil pump station (3) and a hydraulic oil cylinder (4); the hydraulic oil cylinder (4) comprises a conical expansion shaft (41) and a cylinder body (42); the conical expansion shaft (41) is transmission-connected to the cylinder body (42); the cylinder body (42) is connected to the boosting oil pump station (3) via an oil pipe; the expansion mechanism (7) is a cylindrical structure; the conical expansion shaft (41) is inserted into the middle position of the expansion mechanism (7); the conical expansion shaft (41) is used to radially push the expansion mechanism (7); and the expansion mechanism (7) is used to squeeze the copper sleeve inside the joint.

6. The expansion device with a seat cushion according to claim 1, characterized in that: A housing (6) is installed on the outside of the frame (2), a through hole is provided on one side of the housing (6) close to the output end of the hydraulic cylinder (4), an annular mounting frame (61) is arranged in the through hole, and the annular mounting frame (61) is used to position the hydraulic cylinder (4).

7. The expansion device with a seat cushion according to claim 1, characterized in that: The expansion mechanism (7) comprises an expansion sleeve (71) and a plurality of expansion sliders (72); the expansion sleeve (71) is mounted on the output end face of the hydraulic cylinder (4); a plurality of slide grooves are provided in the radial direction of the expansion sleeve (71); the plurality of expansion sliders (72) are slidably connected to the slide grooves; the plurality of expansion sliders (72) are annular in structure; and circumferential springs are mounted on the outer sides of the plurality of expansion sliders (72).

8. The expansion device with a seat cushion according to claim 7, characterized in that: A micro switch (73) is installed on the expansion sleeve (71), and the micro switch (73) is electrically connected to the driving mechanism.

9. An expansion device with a seat cushion according to any one of claims 1 to 8, characterized in that: It also comprises a transfer mechanism (8), which is arranged at the bottom of the frame (2) and is used to move the expansion device.

10. The expansion device with a seat cushion according to claim 9, characterized in that: It also includes a storage cabinet (5), which is arranged in the second support frame (22) of the frame (2), and the storage cabinet (5) is equipped with a door (51) that opens upward.

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