Mechanician seat with function of preventing mistaken starting of energy absorption device

Abstract

The utility model discloses a machinist seat with a function of preventing an energy absorption device from being started by mistake. The machinist seat comprises a seat body, the energy absorption device and a limiting pin, the two energy absorption devices are installed on the left side and the right side of the bottom of the seat body correspondingly, one ends of the energy absorption devices are connected with the bottom of the seat body, and the ends, away from the seat body, of the energy absorption devices are fixedly connected with the cabin wall; the seat body can move up and down on the energy absorption device. The limiting pin is inserted into the end, close to the seat body, of the energy absorption device, and the limiting pin is used for preventing the seat body from moving up and down on the energy absorption device. By arranging the limiting pin, the energy absorption device can be prevented from being mistakenly started when a ground crew steps on the seat in a jumping mode; by arranging the energy absorption device, the damage to passengers when the airplane crashes can be effectively reduced; the energy absorption device and the limiting pin are simple and reliable in structure; compared with similar devices, the device has the characteristics of light weight and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter mechanic's anti-crash seat supporting equipment, in particular to a mechanic's seat with a function of preventing an energy absorption device from being mistakenly started. Background Art

[0002] The energy absorption device is the core component of the helicopter's crash-resistant seat design, which ensures the safety of the occupants to a great extent.

[0003] The mechanic's seat is often used as a step for ground staff to climb onto the top of the aircraft or enter the cabin from the top of the aircraft, and ground staff often jump and step on the seat, causing the seat's energy absorption device to be activated by mistake. Over time, it is easy to damage the safety performance of the mechanic's seat and reduce the safety of the seat.

[0004] Therefore, inventing a mechanic seat with a function of preventing the energy absorption device from being accidentally started has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanic's seat with a function of preventing the energy absorption device from being accidentally started, thereby solving the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A mechanic seat with a function of preventing an energy absorption device from being accidentally activated comprises a seat body;

[0008] There are two energy absorbing devices, which are respectively installed on the left and right sides of the bottom of the seat body. One end of the energy absorbing device is connected to the bottom of the seat body, and the end away from the seat body is fixedly connected to the bulkhead; the energy absorbing device can drive the seat body to move up and down.

[0009] The limit pin is inserted at one end of the energy absorbing device adjacent to the seat body, and is used to prevent the seat body from moving up and down on the energy absorbing device.

[0010] In some specific embodiments, the energy absorbing device comprises:

[0011] An energy absorbing guide column, wherein a first bolt hole, a second bolt hole and a third bolt hole are provided on the energy absorbing guide column;

[0012] The axis of the first bolt hole is perpendicular to the axis of the second bolt hole;

[0013] The second bolt hole and the third bolt hole are arranged on the same side;

[0014] The slip ring and the coil spring are provided on the energy absorbing guide column; the top of the slip ring is fixedly connected to the bottom of the seat body; the coil spring is provided at the bottom of the slip ring, and the bottom of the slip ring is fixedly connected to the outer end of the coil spring;

[0015] The metal strip of the coil spring is in the form of a thin sheet.

[0016] In some specific embodiments, the energy absorbing device further comprises:

[0017] Fixing plates and fixing bolts;

[0018] A fixing plate is arranged on the top of the slip ring, and a round hole is arranged at one end of the fixing plate; a fixing bolt passes through the round hole of the fixing plate and the first bolt hole on the energy absorbing guide column to fix the fixing plate on the energy absorbing guide column;

[0019] One end of the fixing plate away from the energy absorbing guide column is fixed on the bulkhead.

[0020] In some specific embodiments, the energy absorbing device further comprises: a cross beam and a coil spring hanging point bolt;

[0021] One end of the coil spring hanging point bolt is fixed on the cross beam, and the inner end of the coil spring is connected to the end of the coil spring hanging point bolt away from the cross beam;

[0022] The inner end of the coil spring is hook-shaped so as to be used for connecting the coil spring hanging point bolt.

[0023] In some specific embodiments, the energy absorbing device further includes: a screw, which is used to pass through the third bolt hole to fix the crossbeam to the energy absorbing guide column.

[0024] In some specific embodiments, both ends of the cross beam are ring structures, and the cross beam is sleeved on the bottom of the energy absorbing guide column through the ring structure.

[0025] In some specific embodiments, the limiting pin includes:

[0026] A pin rod; one end of the pin rod is provided with a thread, and the end of the pin rod with the thread is provided with a limit hole; an adjustment hole is provided at the end of the pin rod away from the limit hole;

[0027] The pin cap is sleeved on the end of the pin rod away from the limiting hole and is fixedly connected to the pin rod;

[0028] A rotating ring is arranged in the adjusting hole and is used for adjusting the pin rod.

[0029] In some specific embodiments, the limiting pin includes: a hanging rope and a limiting nail;

[0030] One end of the hanging rope is tied to the rotating ring, and the end away from the rotating ring is connected to the limit pin;

[0031] The limiting pin is used to be inserted into the limiting hole.

[0032] In some embodiments, the rotating ring is pentagonal in shape;

[0033] The limiting pin is used for being inserted into the second bolt hole.

[0034] In some specific embodiments, a hook is further provided at the bottom of the base body for hanging a limit pin.

[0035] The beneficial effects of the utility model are as follows: the present invention discloses a mechanic seat with a function of preventing the energy absorbing device from being accidentally activated, comprising a seat body, an energy absorbing device and a limit pin; two energy absorbing devices are provided, which are respectively installed on the left and right sides of the bottom of the seat body, one end of the energy absorbing device is connected to the bottom of the seat body, and the end away from the seat body is fixedly connected to the bulkhead; the seat body can move up and down on the energy absorbing device. The limit pin is inserted into one end of the energy absorbing device adjacent to the seat body, and the limit pin is used to prevent the seat body from moving up and down on the energy absorbing device. The utility model can prevent the energy absorbing device from being accidentally activated when ground staff jump and step on the seat by setting a limit pin; the energy absorbing device can effectively reduce the damage to passengers when the aircraft crashes; the energy absorbing device and the limit pin have simple and reliable structures; compared with similar devices, it has the characteristics of light weight and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the installation of a mechanic's seat with a function of preventing the energy absorption device from being accidentally started according to the present invention;

[0037] Figure 2 It is a structural schematic diagram of an energy absorbing device of a mechanic's seat with a function of preventing the energy absorbing device from being accidentally started according to the present invention;

[0038] Figure 3 It is a cross-sectional view of an energy absorbing device of a mechanic's seat with a function of preventing the energy absorbing device from being accidentally activated according to the present invention;

[0039] Figure 4 It is a structural schematic diagram of a limit pin of a mechanic seat with a function of preventing an energy absorption device from being accidentally started according to the present invention;

[0040] Figure 5 It is a structural schematic diagram of another embodiment of a limit pin of a mechanic's seat with a function of preventing the energy absorption device from being accidentally started according to the present invention.

[0041] In the attached drawings, 100, bulkhead; 110, energy absorbing guide column; 120, slip ring; 130, limit pin; 131, rotating ring; 132, pin cap; 133, pin rod; 134, thread; 135, limit nail; 136, limit hole; 140, coil spring hanging point bolt; 150, cross beam; 160, fixing plate; 170, fixing bolt; 180, coil spring; 190, second bolt hole; 191, third bolt hole; 200, machine top; 300, right energy absorbing device; 400, left energy absorbing device; 500, seat body; 600, bottom plate. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0043] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The mechanic seat shown has a function of preventing the energy absorbing device from being accidentally started, and includes a seat body 500, an energy absorbing device and a limit pin 130. There are two energy absorbing devices, which are respectively installed on the left and right sides of the bottom of the seat body 500. One end of the energy absorbing device is connected to the bottom of the seat body 500, and the end away from the seat body 500 is fixedly connected to the bulkhead 100. The energy absorbing device can drive the seat body 500 to move up and down. The limit pin 130 is inserted at one end of the energy absorbing device adjacent to the seat body 500, and the limit pin 130 is used to prevent the seat body 500 from moving up and down on the energy absorbing device. It should be noted here that the seat body 500 is installed in the passage at a certain height from the bottom plate 600. After the backrest of the seat body 500 is folded, the seat body 500 is used as a step for ground staff to climb onto the top 200 or enter the cabin from the top 200. When ground crew members go up and down the helicopter roof 200 for maintenance, jumping and stepping may occur, and the limit pin 130 on the energy absorbing device will limit the coil spring 180 to start, and the seat body 500 will move up and down on the energy absorbing guide column 110. The limit pin 130 can prevent the energy absorbing device from being started by mistake and prevent the seat body 500 from moving up and down. Under normal circumstances, the energy absorbing device can support the weight of the seat body 500 and the occupant.

[0044] In some specific embodiments, the energy absorbing device includes an energy absorbing guide column 110, and a first bolt hole, a second bolt hole 190, and a third bolt hole 191 are provided on the energy absorbing guide column 110. The axis of the first bolt hole is perpendicular to the axis of the second bolt hole 190. The second bolt hole 190 and the third bolt hole 191 are arranged on the same side. It should be noted here that the position of the first bolt hole is higher than the second bolt hole 190, and the position height of the second bolt hole 190 is higher than the third bolt hole 191.

[0045] Slip ring 120 and coil spring 180, the slip ring 120 is sleeved on the energy absorbing guide column 110. The top of the slip ring 120 is fixedly connected to the bottom of the seat body 500. The coil spring 180 is arranged at the bottom of the slip ring 120, and the bottom of the slip ring 120 is fixedly connected to the outer end of the coil spring 180. It should be noted here that the top of the slip ring 120 can be fixedly connected to the bottom of the seat body 500 through a special fixing structure. The slip ring 120 can slide up and down on the energy absorbing guide column 110 under force. The limit pin 130 is close to the slip ring 120 during installation, and the limit pin 130 just sticks to the surface of the slip ring 120. The metal strip of the coil spring 180 is in the form of a thin sheet.

[0046] In some specific embodiments, the energy absorbing device further includes a fixing plate 160 and a fixing bolt 170. The fixing plate 160 is arranged on the top of the slip ring 120, and a circular hole is provided at one end of the fixing plate 160. The fixing bolt 170 passes through the circular hole of the fixing plate 160 and the first bolt hole on the energy absorbing guide column 110 to fix the fixing plate 160 on the energy absorbing guide column 110. One end of the fixing plate 160 away from the energy absorbing guide column 110 is fixed to the bulkhead 100. It should be noted here that the fixing plate 160 is a T-shaped structure.

[0047] In some specific embodiments, the energy absorbing device further comprises a cross beam 150 and a coil spring 180 hanging bolt 140. One end of the coil spring 180 hanging bolt 140 is fixed on the cross beam 150, and the inner end of the coil spring 180 is connected to the end of the coil spring 180 hanging bolt 140 away from the cross beam 150.

[0048] The inner end of the coil spring 180 is hook-shaped so as to be connected to the coil spring 180 hanging point bolt 140. It should be noted that the inner end of the coil spring 180 is fixedly connected to the coil spring 180 hanging point bolt 140.

[0049] In some specific embodiments, the energy absorbing device further includes a screw, and the screw is used to pass through the third bolt hole 191 to fix the cross beam 150 to the energy absorbing guide column 110 .

[0050] In some specific embodiments, both ends of the cross beam 150 are annular structures, and the cross beam 150 is sleeved on the bottom of the energy absorbing guide column 110 through the annular structure. It should be noted that two energy absorbing devices are provided at the bottom of the seat body 500, namely the left energy absorbing device 400 and the right energy absorbing device 300.

[0051] In some specific embodiments, the limiting pin 130 includes a pin rod 133. A thread 134 is provided at one end of the pin rod 133, and a limiting hole 136 is provided at the end of the pin rod 133 with the thread 134. An adjustment hole is provided at the end of the pin rod 133 away from the limiting hole 136. A pin cap 132 is sleeved at the end of the pin rod 133 away from the limiting hole 136 and fixedly connected to the pin rod 133. A rotating ring 131 is provided in the adjustment hole and is used to adjust the pin rod 133.

[0052] In some specific embodiments, the limiting pin 130 includes a hanging rope and a limiting nail 135 .

[0053] One end of the hanging rope is tied to the rotating ring 131, and the other end away from the rotating ring 131 is connected to the limiting nail 135. The limiting nail 135 is used to be inserted into the limiting hole 136.

[0054] In some specific embodiments, the rotating ring 131 is pentagonal. The limiting pin 130 is used to be inserted into the second bolt hole 190 .

[0055] In some specific embodiments, a hook is further provided at the bottom of the base body for hanging a limit pin 130. When the staff does not need to step on the seat body 500, the limit pin 130 can be pulled out and hung on the hook at the bottom of the base body through the rotating ring 131. When the seat body 500 is needed, the limit pin 130 can be inserted into the second bolt hole 190 of the energy absorbing guide column 110 to prevent the seat body 500 from being damaged due to the staff's back and forth stepping.

[0056] By adopting the above technical solution disclosed in the utility model, the following beneficial effects are obtained:

[0057] The present invention discloses a mechanic's seat with a function of preventing an energy absorbing device from being accidentally activated, comprising a seat body 500, an energy absorbing device and a limit pin 130. Two energy absorbing devices are provided, which are respectively installed on the left and right sides of the bottom of the seat body 500. One end of the energy absorbing device is connected to the bottom of the seat body 500, and the end away from the seat body 500 is fixedly connected to the bulkhead 100. The seat body 500 can move up and down on the energy absorbing device. The limit pin 130 is inserted at one end of the energy absorbing device adjacent to the seat body 500, and the limit pin 130 is used to prevent the seat body 500 from moving up and down on the energy absorbing device. The utility model can prevent the energy absorbing device from being accidentally activated when ground staff jump and step on the seat by setting the limit pin 130. The energy absorbing device can effectively reduce the damage to passengers when the aircraft crashes. The energy absorbing device and the limit pin 130 are simple and reliable in structure; compared with similar devices, they have the characteristics of light weight and low cost.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A mechanic's seat with a function of preventing the energy absorption device from being accidentally activated, characterized in that: include: Seat body; There are two energy absorbing devices, which are respectively installed on the left and right sides of the bottom of the seat body, one end of the energy absorbing device is connected to the bottom of the seat body, and the other end away from the seat body is fixedly connected to the bulkhead; the energy absorbing device can drive the seat body to move up and down; A limit pin is inserted into one end of the energy absorbing device adjacent to the seat body, and the limit pin is used to prevent the seat body from moving up and down on the energy absorbing device.

2. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 1 is characterized in that: The energy absorbing device comprises: An energy absorbing guide column, wherein the energy absorbing guide column is provided with a first bolt hole, a second bolt hole and a third bolt hole; The axis of the first bolt hole is perpendicular to the axis of the second bolt hole; The second bolt hole and the third bolt hole are arranged on the same side; A slip ring and a coil spring, wherein the slip ring is sleeved on the energy absorbing guide column; the top of the slip ring is fixedly connected to the bottom of the seat body; the coil spring is arranged at the bottom end of the slip ring, and the bottom end of the slip ring is fixedly connected to the outer end of the coil spring; The metal strip of the coil spring is in the shape of a thin sheet.

3. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 2 is characterized in that: The energy absorbing device further comprises: Fixing plates and fixing bolts; A fixing plate is arranged on the top of the slip ring, and a circular hole is arranged at one end of the fixing plate; the fixing bolt passes through the circular hole of the fixing plate and the first bolt hole on the energy absorbing guide column to fix the fixing plate on the energy absorbing guide column; One end of the fixing plate away from the energy absorbing guide column is fixed on the bulkhead.

4. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 3 is characterized in that: The energy absorbing device also includes: a crossbeam and coil spring hanging point bolts; One end of the coil spring hanging point bolt is fixed on the cross beam, and the inner end of the coil spring is connected to the end of the coil spring hanging point bolt away from the cross beam; The inner end of the coil spring is in a hook shape so as to be used for connecting the coil spring hanging point bolt.

5. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 4 is characterized in that: The energy absorbing device further comprises: a screw, wherein the screw is used to pass through the third bolt hole to fix the cross beam and the energy absorbing guide column.

6. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 4 is characterized in that: Both ends of the cross beam are annular structures, and the cross beam is sleeved on the bottom of the energy absorbing guide column through the annular structure.

7. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 5, characterized in that: The limit pin comprises: A pin rod; one end of the pin rod is provided with a thread, and the end of the pin rod with the thread is provided with a limiting hole; an adjustment hole is provided at the end of the pin rod away from the limiting hole; A pin cap is sleeved on an end of the pin rod away from the limiting hole and is fixedly connected to the pin rod; A rotating ring is arranged in the adjusting hole and is used for adjusting the pin rod.

8. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 7 is characterized in that: The limit pin includes: a hanging rope and a limit nail; One end of the lanyard is tied to the rotating ring, and the other end away from the rotating ring is connected to the limiting nail; The limiting pin is used to be inserted into the limiting hole.

9. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 7, characterized in that: The rotating ring is in a pentagonal shape; The limiting pin is used to be inserted into the second bolt hole.

10. The mechanic seat with the function of preventing the energy absorption device from being accidentally activated according to claim 7, characterized in that: A hook is also provided at the bottom of the seat body for hanging the limiting pin.

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