Carriage seat of emergency ambulance

Abstract

The utility model discloses an emergency ambulance carriage seat which comprises a supporting frame and a seat body, a rail is installed on a top panel of the supporting frame, the seat body is installed on a sliding seat through a rotary positioning mechanism, a sliding piece is fixed to the bottom of the sliding seat, the sliding piece is arranged in the rail in a sliding mode, and the seat body and the sliding seat translate along the rail through the sliding piece. A plurality of positioning holes are sequentially formed in a panel at the top of the supporting frame on one side of the rail at intervals in the length direction of the rail, and a locking piece which can move along with the sliding seat and pass through and can be inserted into any positioning hole to lock the translation position of the seat is mounted on the sliding seat. The utility model has the advantages that: (1) not only can the position of the seat in the carriage of the emergency ambulance be synchronously adjusted by adjusting the position of the seat on the support frame, but also the rotation angle of the seat can be adjusted, the operation and the use are convenient, and the use stability is high; and (2) the seat can be conveniently and quickly taken down from the track and is convenient to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a compartment seat of an emergency vehicle. Background Art

[0002] At present, the seats used in the compartment of the ambulance are all fixedly installed on the compartment wall, and the position of the seats in the compartment of the ambulance cannot be adjusted, which is inconvenient to use. Utility Model Content

[0003] The utility model aims to provide a convenient-to-use seat for an emergency vehicle compartment.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an emergency vehicle compartment seat, including a support frame and a seat, a track is installed on the top panel of the support frame, the seat is installed on the slide seat through a rotation positioning mechanism, a sliding member is fixed at the bottom of the slide seat, the sliding member is slidably arranged in the track, the seat and the slide seat are translated along the track through the sliding member, a plurality of positioning holes are sequentially arranged at intervals along the length direction of the track on the top panel of the support frame on one side of the track, a locking member is installed on the slide seat, which can move with the slide seat and pass through and be inserted into any one of the positioning holes to lock the translation position of the seat, the structure of the rotation positioning mechanism includes: the seat is hinged to the slide seat through a vertical axis, a lower fixed plate and an upper rotating plate are sleeved on the vertical axis, the lower fixed plate is fixed to the upper surface of the slide seat, and the upper rotating plate is fixedly installed at the bottom of the seat, A plurality of locking holes are arranged in sequence around the vertical axis on the lower fixed plate, and a through hole is arranged on the upper rotating plate, which passes through the upper rotating plate from top to bottom. When the through hole rotates relative to the lower fixed plate together with the upper rotating plate and the seat, it can pass through the locking holes on the lower fixed plate in sequence. A shaft sleeve is fixedly inserted into the through hole of the upper rotating plate, and the upper end of the shaft sleeve has a circle of bosses protruding inwardly from the inner wall of the shaft sleeve. A rotating shaft is horizontally installed at the lower part of the seat, and one side end of the rotating shaft extends out of the seat and is installed with a handle. A square tube is fixed on the shaft body of the rotating shaft, and a long hole is arranged on the tube wall of the square tube. The upper end of the fixed shaft is fixed through the long hole. The hole extends into the square tube and is fixed with a connecting block. The upper and lower ends of the connecting block are arc-shaped parts that allow the connecting block to rotate relative to the square tube in the square tube. The fixed shaft is movably hung on the square tube through the connecting block. The lower end of the fixed shaft extends into the shaft sleeve. The lower end of the fixed shaft is reduced in diameter to form a step surface. A first spring is arranged in the shaft sleeve and is sleeved on the outside of the fixed shaft. The upper end of the first spring abuts against the boss of the shaft sleeve and the lower end abuts against the step surface of the fixed shaft. Under the elastic force of the first spring, the fixed shaft always has a tendency to extend downward through the through hole and insert into the corresponding locking hole of the lower fixed plate to lock the rotation position of the seat relative to the slide seat.

[0005] Furthermore, the aforementioned seat in the compartment of an ambulance, wherein: the structure of the locking piece includes: a lock seat, a sleeve, a lock cover and a lock pin, a mounting hole is provided on the sliding seat which passes through the sliding seat up and down, the lock seat is installed on the upper surface of the sliding seat at the mounting hole, a stepped hole is provided in the lock seat which passes through the lock seat up and down and corresponds to the mounting hole of the sliding seat, the lower section of the stepped hole has a large diameter and the upper section has a small diameter, the sleeve is installed on the lower surface of the sliding seat at the mounting hole and corresponds to the mounting hole upwardly connected; the lock pin is passed through the sleeve, a locking rod is fixed to the upper end of the locking pin, the lock cover is fixed to the upper end of the locking rod after the locking rod passes upward through the mounting hole and the stepped hole, a second spring is provided outside the locking rod, the upper end of the second spring abuts against the step surface of the stepped hole of the lock seat, and the lower end abuts against the locking pin, and under the elastic force of the second spring, the locking pin always has a tendency to extend from the sleeve and insert downward into the corresponding positioning hole of the top panel of the support frame.

[0006] Furthermore, in the aforementioned emergency vehicle compartment seat, a positioning groove is provided on the upper surface of the lock seat, the small-diameter section opening of the stepped hole of the lock seat is located at the bottom wall of the positioning groove, and a downwardly protruding positioning protrusion is provided on the lower surface of the lock cover, and the cross-sectional shape of the positioning protrusion in the width direction is adapted to the cross-sectional shape in the width direction of the positioning groove, so that when the width direction of the positioning protrusion is consistent with the width direction of the positioning groove, the positioning protrusion is just inserted downward into the positioning groove under the elastic force of the second spring, and at this time, the lock pin is in an extended state extending from the sleeve and downwardly inserted into the corresponding positioning hole of the top panel of the support frame, and the length of the positioning protrusion is greater than the width of the positioning groove. The depth of the positioning groove can ensure that when the lock cover overcomes the elastic force of the second spring to lift the positioning protrusion, the locking rod and the locking pin upward until the positioning protrusion is higher than the positioning groove, the locking pin is just in a retracted state of being pulled out from the corresponding positioning hole in the top panel of the support frame and retracted into the sleeve, and the length of the positioning protrusion is greater than the width of the positioning groove, so that when the lock cover overcomes the elastic force of the second spring to lift the positioning protrusion, the locking rod and the locking pin upward until the positioning protrusion is higher than the positioning groove, and the lock cover is rotated until the width direction of the positioning protrusion and the width direction of the positioning groove are rotated and misaligned with each other, the positioning protrusion will be pressed on the top of the positioning groove under the action of the second spring force, thereby keeping the locking pin in a retracted state.

[0007] Furthermore, in the aforementioned emergency vehicle compartment seat, stoppers are respectively inserted into both side ends of the track, and the stoppers are detachably mounted on the corresponding track ends through locking bolts.

[0008] Furthermore, in the aforementioned ambulance compartment seat, the sliding member includes a slider embedded in a track, with a plurality of rollers respectively installed on both sides of the slider, and the slider slides along the track via the rollers.

[0009] Through the implementation of the above technical solution, the beneficial effects of the utility model are: (1) not only can the position of the seat in the ambulance compartment be adjusted synchronously by adjusting the position of the seat on the support frame, but also the rotation angle of the seat can be adjusted, which is easy to operate and has high stability; (2) The seat can be easily and quickly removed from the track, which is convenient for maintenance and replacement; (3) Multiple seats can be quickly installed on the track according to actual conditions, and the distance between adjacent seats can be freely adjusted by adjusting the position of the seat on the support frame, thereby making more reasonable use of the space in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic structural diagram of a seat in an emergency vehicle compartment.

[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the AA section shown in FIG.

[0012] Figure 3 for Figure 2 An enlarged schematic diagram of site C is shown in FIG.

[0013] Figure 4 for Figure 1 Schematic diagram of the structure of the BB section shown in FIG.

[0014] Figure 5 for Figure 4 An enlarged schematic diagram of site D shown in FIG.

[0015] Figure 6 The figure is a three-dimensional diagram of the lock cover.

[0016] Figure 7 A stereoscopic view of the lock seat from one perspective.

[0017] Figure 8 A stereoscopic image of the lock seat from another perspective.

[0018] Fig. 9 for Figure 1 Stereoscopic diagram.

[0019] Fig.10 It is a schematic diagram of the relative position relationship among the rotating shaft, square tube, upper rotating disk and lower fixed disk.

[0020] Fig.11 It is a three-dimensional diagram of a square tube.

[0021] Fig.12 It is a schematic diagram of the connection relationship between the connecting block and the fixed shaft.

[0022] Fig.13 for Fig.12 Stereoscopic diagram.

[0023] Fig.14 It is a three-dimensional view of the upper rotating disk.

[0024] Fig.15 It is a schematic diagram of the relative position relationship among the slide seat, the lower fixed plate, the locking member and the sliding member.

[0025] Fig.16 It is a schematic diagram of the structure of the sliding part. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] like Figure 1 , Fig. 9 As shown, the described emergency vehicle compartment seat comprises a support frame 1 and a seat 2, a track 4 is installed on the top panel 3 of the support frame 1, in this embodiment, the number of the tracks 4 is two, the seat 2 is installed on the slide 5 through a rotation positioning mechanism, a sliding member 6 is fixed at the bottom of the slide 5, the number of the sliding members 6 is four, the four sliding members 6 are arranged in groups of two, and the two groups of sliding members 6 are respectively arranged in the two tracks 4. In this embodiment, as shown in FIG. Fig.16 As shown, the sliding member 6 includes: a slider 61 embedded in the track 4, and a plurality of rollers 62 are respectively installed on both sides of the slider 61. In this embodiment, the number of rollers on each side of the slider 61 is two, and the slider 61 slides along the track 4 through the rollers 62, and the seat 2 and the slide 5 are translated along the track 4 through the sliders 6. Since the slider 61 rolls and rubs against the inner wall of the track 4 through the rollers, the slider 61 can move more smoothly along the track 4, and thus the slide 5 and the seat 2 can translate more smoothly along the track 4;

[0028] A plurality of positioning holes 7 are provided in sequence along the length direction of the rails 4 on the top panel 3 of the support frame between the two rails 4. A locking member 8 is installed on the slide 5, which can move with the slide 5 and pass through and be inserted into any one of the positioning holes 7 to lock the translation position of the seat 2. In this embodiment, as shown in FIG. Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the structure of the locking member 8 includes: a lock seat 81, a sleeve 82, a lock cover 83 and a lock pin 84. A mounting hole 85 is provided on the slide seat 5, which passes through the slide seat 5 from top to bottom. The lock seat 81 is fixedly mounted on the upper surface of the slide seat 5 at the mounting hole 85. A stepped hole 86 is provided in the lock seat 81, which passes through the lock seat 81 from top to bottom and corresponds to the slide seat mounting hole 85. The lower section of the stepped hole 86 has a large diameter and the upper section has a small diameter. The sleeve 82 is fixedly mounted on the lower surface of the slide seat 5 at the mounting hole 85 and corresponds to the upward connection. The locking pin 84 is inserted into the sleeve 82, and a locking rod 87 is fixed to the upper end of the locking pin 84. The upper end of the locking rod 87 passes through the mounting hole 85 and the stepped hole 86 upwards, and a locking cover 83 is fixed thereto. A second spring 88 is disposed on the outer sleeve of the locking rod 87, and the upper end of the second spring 88 abuts against the step surface of the stepped hole 86 of the lock seat, and the lower end abuts against the locking pin 84. Under the elastic force of the second spring 88, the locking pin 84 always has a tendency to extend from the sleeve 82 and insert downward into the corresponding positioning hole 7 of the top panel 3 of the support frame;

[0029] In this embodiment, a positioning groove 89 is provided on the upper surface of the lock seat 81, and the small-diameter section of the stepped hole 86 of the lock seat 81 is located at the bottom wall of the positioning groove 89. A downwardly protruding positioning protrusion 810 is provided on the lower surface of the lock cover 83. The cross-sectional shape of the positioning protrusion 810 in the width direction is adapted to the cross-sectional shape of the positioning groove 89 in the width direction, so that when the width direction of the positioning protrusion 810 is consistent with the width direction of the positioning groove 89, the positioning protrusion 810 is just inserted downward into the positioning groove 89 under the elastic force of the second spring 88. At this time, the lock pin 84 is in an extended state extending from the sleeve 82 and downwardly inserted into the corresponding positioning hole 7 of the top panel 3 of the support frame. The length of the positioning protrusion 810 is greater than the width of the positioning groove 89, and the depth of the positioning groove 89 can ensure that when the lock When the cover 83 overcomes the elastic force of the second spring 88 to lift the positioning protrusion 810, the locking rod 87 and the locking pin 84 upwards until the positioning protrusion 810 is higher than the positioning groove 89, the locking pin 84 is just in the retracted state of being pulled out from the corresponding positioning hole 7 of the top panel 3 of the support frame and retracted into the sleeve 82, and the length of the positioning protrusion 810 is greater than the width of the positioning groove 89, so that when the locking cover 83 overcomes the elastic force of the second spring 88 to lift the positioning protrusion 810, the locking rod 87 and the locking pin 84 upwards until the positioning protrusion 810 is higher than the positioning groove 89, and the locking cover 83 is rotated until the width direction of the positioning protrusion 810 and the width direction of the positioning groove 89 are rotated and misaligned with each other, at this time, the positioning protrusion 810 will be pressed on the top of the positioning groove 89 under the action of the elastic force of the second spring 88, so that the locking pin 84 remains in the retracted state;

[0030] In this embodiment, the seat 2 is mounted on the slide 5 via a rotation positioning mechanism. Figure 2 , Figure 3 , Fig.10 , Fig.11 , Fig.12、 Fig.13 、 Fig.14 、 Fig.15As shown, the structure of the rotation positioning mechanism includes: the seat 2 is hinged to the slide 5 through the vertical axis 9, and a lower fixed plate 10 and an upper rotating plate 11 are sleeved on the vertical axis 9, the lower fixed plate 10 is fixed to the upper surface of the slide 5, and the upper rotating plate 11 is fixedly installed at the bottom of the seat 2, and a plurality of locking holes 12 are arranged in sequence around the vertical axis 9 along the circumferential direction on the lower fixed plate 10, and a through hole 13 penetrating the upper rotating plate 11 up and down is arranged on the upper rotating plate 11, and the through hole 13 can pass through the locking holes 12 on the lower fixed plate 10 in sequence when the upper rotating plate 11 and the seat 2 rotate relative to the lower fixed plate 10 and the slide 5, and a shaft sleeve 14 is fixedly inserted into the through hole 13 of the upper rotating plate 11, and the upper end of the shaft sleeve 14 has a circle of bosses 15 protruding inwardly from the inner wall of the shaft sleeve 14, and the seat 2 ... 2 is horizontally installed at the lower part of the seat 2, and the rotating shaft 16 is movably supported in the seat 2 through a bearing. One side end of the rotating shaft 16 extends out of the seat 2 and is installed with a handle 17. A square tube 18 is fixed on the shaft body of the rotating shaft 16, and a long hole 19 is provided on the tube wall of the square tube 18. The upper end of the fixed shaft 20 extends into the square tube 18 through the long hole 19 and is fixed with a connecting block 21. The upper and lower ends of the connecting block 21 are arc-shaped portions 211 that allow the connecting block 21 to rotate relative to the square tube 18 in the square tube 18. The fixed shaft 2 0 is movably hung on the square tube 18 through the connecting block 21, the lower end of the fixed shaft 20 extends into the shaft sleeve 14, the lower end of the fixed shaft 20 is reduced in diameter to form a step surface, and a first spring 22 is arranged inside the shaft sleeve 14 and sleeved on the outside of the fixed shaft 20. The upper end of the first spring 22 abuts against the convex shoulder 15 of the shaft sleeve 14, and the lower end abuts against the step surface of the fixed shaft 20. Under the elastic force of the first spring 22, the fixed shaft 20 always has a downward extending through hole 13 and inserted into the corresponding locking hole 12 of the lower fixed plate 10 to slide the seat 2 relative to the seat 5 is locked in the rotational position; in this embodiment, during the entire process of adjusting the rotation angle of the seat 2, since the fixed shaft 20 moves along the shaft sleeve 14, the movement trajectory of the fixed shaft 20 is always in the vertical direction. At the same time, since the square tube 18 rotates upward with the rotating shaft 16, the running trajectory of the square tube 18 is an arc. At this time, if the square tube 18 is fixedly connected to the fixed shaft 20, then when the square tube 18 rotates to drive the fixed shaft 20 to move upward, the fixed shaft 20 will be clamped in the shaft sleeve 14;Therefore, in order to enable the square tube 18 to drive the fixed shaft 20 to rise and fall during the arc-shaped movement, the present application provides a long hole structure on the square tube 18, and sets the fixed shaft 20 in the long hole 19, so that during the arc-shaped movement of the square tube 18, the square tube 18 can undergo a certain displacement change with the fixed shaft 20 through the long hole 19, and on the other hand, a connecting block structure is designed, the upper end of the fixed shaft 20 is inserted into the square tube 18 through the long hole 19 and fixed with a connecting block 21, and the upper and lower ends of the connecting block 21 are arc-shaped portions 211 that allow the connecting block 21 to rotate relative to the square tube 18 in the square tube 18, so that during the arc-shaped movement of the square tube 18, the square tube 18 can undergo a certain angle change with the fixed shaft 20, thereby ensuring that the square tube 18 can drive the fixed shaft 20 to rise and fall during the arc-shaped movement;

[0031] In this embodiment, blocks 23 are respectively inserted into the ends of both sides of the track 4, and the blocks 23 are detachably mounted on the corresponding ends of the track 4 through locking bolts 24. In this way, when the seat 2 needs to be removed from the support frame 1 for maintenance and replacement, the block 23 can be removed first, and then the slide 5 together with the seat 2 can be removed from the track 4. After the slide 5 and the seat are reinstalled on the track 4, the block 23 is reinstalled on the end of the track 4 through the locking bolts 24. The block 23 can prevent the seat 2 and the slide 5 from falling off the track, further improving the safety of use;

[0032] During actual installation, the support frame 1 can be fixed on the floor of the emergency vehicle compartment (the rear wheel hub package position);

[0033] The working principle of the utility model is as follows:

[0034] When it is necessary to move the seat 2 to adjust the position of the seat 2 on the support frame 1, the staff member grabs and lifts the lock cover 83 upwards. When the lock cover 83 is lifted upwards, the lock cover 83 will drive the positioning protrusion 810, the lock rod 87 and the lock pin 84 to overcome the elastic force of the second spring 88 and move upwards. In the process of the lock pin 84 moving upwards, the lock pin 84 will gradually be pulled out from the corresponding positioning hole 7 of the top panel 3 of the support frame and gradually retracted upwards into the sleeve 82. When the lock cover 83 is lifted upwards until the positioning protrusion 810 is higher than the positioning groove 89, the lock pin 84 has been completely retracted into the sleeve 82, and then the lock cover 83 is rotated. When the lock cover 83 rotates, it will drive the positioning protrusion 810, the lock rod 87 and the lock pin 84 to move upwards. The positioning protrusion 810, the locking rod 87 and the locking pin 84 rotate together until the lock cover 83 rotates to the position where the width direction of the positioning protrusion 810 and the width direction of the positioning slot 89 are rotated and misaligned with each other. In actual operation, the lock cover 83 is rotated to the position where the length direction of the positioning protrusion 810 is consistent with the width direction of the positioning slot 89. Since the length of the positioning protrusion 810 is greater than the width of the positioning slot 89, the positioning protrusion 810 cannot be inserted downward into the positioning slot 89 in this position, but will be at the top of the positioning slot 89. Then, the external force applied to the lock cover 83 is removed. At this time, under the elastic force of the second spring 88, the positioning protrusion 810 will be pressed into the positioning slot 89. 9, so that the locking pin 84 remains in the retracted state; at this time, the seat 2 can be freely moved along the track 4. Since the locking pin 84 automatically remains in the retracted state at this time, the staff does not need to always lift the locking cover upwards during the movement of the seat 2, so that the staff can more conveniently move the seat 2 along the track 4; when the staff moves the seat 2 along the track 4 to a suitable position, the staff only needs to rotate the locking cover 83 again until the locking cover 83 is rotated until the width direction of the positioning protrusion 810 is consistent with the width direction of the positioning groove 89. At this time, under the elastic force of the second spring 88, the positioning protrusion 810 will be inserted downward In the positioning groove 89, during the process of the positioning protrusion 810 being inserted downward into the positioning groove 89, the locking pin 84 will also move downward synchronously and gradually extend out of the sleeve 82. If the lower side of the locking pin 84 is aligned with a positioning hole 7, the locking pin 84 will be inserted downward into the positioning hole 7 of the corresponding support frame panel 3. If the locking pin 84 is not aligned with the positioning hole 7 at this time, the slide 5 only needs to be slightly moved leftward or rightward along the track 4 to adjust the locking pin 84 to face the positioning hole 7. At this time, the locking pin 84 will be inserted downward into the positioning hole 7 of the corresponding support frame panel 3. After the locking pin 84 is reinserted into the positioning hole 7, the slide 5 and the seat 2 are again fixed on the support frame 1.

[0035] When it is necessary to adjust the rotational position of the seat 2 relative to the slide seat 5, the staff member pulls the handle 17 upwards. When the handle 17 is pulled upwards, the rotating shaft 16 will be driven to rotate synchronously, and then the square tube 18 will be driven to rotate upward synchronously. When the direction 18 is rotated upward, the square tube 18 drives the fixed shaft 20 to move upward along the shaft sleeve 14 through the connecting block 21 to overcome the elastic force of the first spring 22. In the process of the fixed shaft 20 moving upward along the shaft sleeve 14, the fixed shaft 20 will gradually be pulled out from the corresponding locking hole 12 of the lower fixed plate 10. When the fixed shaft 20 completely leaves the corresponding locking hole 12 of the lower fixed plate 10, the seat 2 can be rotated around the vertical axis 9 relative to the slide seat 5. When the chair 2 is rotated to a suitable position, the external force applied to the handle 17 is removed. At this time, the fixed shaft 20 will extend downward from the through hole 13 of the upper rotating disk 11 under the elastic force of the first spring 22. If the downward direction of the fixed shaft 20 is just aligned with a locking hole 12 of the lower fixed disk at this time, the fixed shaft 20 will be inserted downward into the corresponding locking hole 12. If the fixed shaft 20 is not aligned with the locking hole 12 at this time, just slightly rotate the seat 2 around the vertical axis 9 and adjust the fixed shaft 20 to face the locking hole 12. At this time, the fixed shaft 20 will be inserted downward into the corresponding locking hole 12 of the lower fixed disk 10, thereby re-locking the rotational position of the seat 2 relative to the slide seat 5.

[0036] The advantages of the present invention are: (1) not only can the position of the seat in the ambulance compartment be adjusted synchronously by adjusting the position of the seat on the support frame, but also the rotation angle of the seat can be adjusted, which is easy to operate and use, and has high stability in use; (2) the seat can be easily and quickly removed from the track, which is convenient for maintenance and replacement; (3) multiple seats can be quickly installed on the track according to actual conditions, and the distance between adjacent seats can be freely adjusted by adjusting the position of the seat on the support frame, thereby making more reasonable use of the space in the vehicle.

[0037] The above description is only a preferred embodiment of the present invention and does not constitute any other limitation on the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. An emergency vehicle compartment seat, characterized in that: The invention comprises a support frame and a seat, wherein a track is installed on the top panel of the support frame, the seat is installed on the slide seat through a rotation positioning mechanism, a sliding member is fixed at the bottom of the slide seat, the sliding member is slidably arranged in the track, the seat and the slide seat are translated along the track through the sliding member, a plurality of positioning holes are sequentially arranged at intervals along the length direction of the track on the top panel of the support frame on one side of the track, a locking member is installed on the slide seat which can move with the slide seat and pass through and be inserted into any one of the positioning holes to lock the translation position of the seat, the structure of the rotation positioning mechanism comprises: the seat is hinged to the slide seat through a vertical axis, a lower fixed plate and an upper rotating plate are sleeved on the vertical axis, the lower fixed plate is fixed to the upper surface of the slide seat, and the upper rotating plate is fixedly installed at the bottom of the seat, A plurality of locking holes are arranged in sequence around the vertical axis on the lower fixed plate, and a through hole is arranged on the upper rotating plate, which passes through the upper rotating plate from top to bottom. When the through hole rotates relative to the lower fixed plate together with the upper rotating plate and the seat, it can pass through the locking holes on the lower fixed plate in sequence. A shaft sleeve is fixedly inserted into the through hole of the upper rotating plate, and the upper end of the shaft sleeve has a circle of bosses protruding inwardly from the inner wall of the shaft sleeve. A rotating shaft is horizontally installed at the lower part of the seat, and one side end of the rotating shaft extends out of the seat and is installed with a handle. A square tube is fixed on the shaft body of the rotating shaft, and a long hole is arranged on the tube wall of the square tube. The upper end of the fixed shaft is fixed through the long hole. The hole extends into the square tube and is fixed with a connecting block. The upper and lower ends of the connecting block are arc-shaped parts that allow the connecting block to rotate relative to the square tube in the square tube. The fixed shaft is movably hung on the square tube through the connecting block. The lower end of the fixed shaft extends into the shaft sleeve. The lower end of the fixed shaft is reduced in diameter to form a step surface. A first spring is arranged in the shaft sleeve and is sleeved on the outside of the fixed shaft. The upper end of the first spring abuts against the boss of the shaft sleeve and the lower end abuts against the step surface of the fixed shaft. Under the elastic force of the first spring, the fixed shaft always has a tendency to extend downward through the through hole and insert into the corresponding locking hole of the lower fixed plate to lock the rotation position of the seat relative to the slide seat.

2. The seat for an emergency vehicle compartment according to claim 1, characterized in that: The structure of the locking piece includes: a lock seat, a sleeve, a lock cover and a lock pin. A mounting hole is arranged on the slide seat, which passes through the slide seat up and down. The lock seat is installed on the upper surface of the slide seat at the mounting hole. A stepped hole is arranged in the lock seat, which passes through the lock seat up and down and corresponds to the mounting hole of the slide seat. The lower section of the stepped hole has a large diameter and the upper section has a small diameter. The sleeve is installed on the lower surface of the slide seat at the mounting hole and corresponds to the mounting hole upwardly connected; the lock pin is inserted into the sleeve, and a locking rod is fixed to the upper end of the locking pin. The lock cover is fixed to the upper end of the locking rod after the locking rod passes through the mounting hole and the stepped hole upward. A second spring is arranged on the outer sleeve of the locking rod, and the upper end of the second spring abuts against the step surface of the stepped hole of the lock seat and the lower end abuts against the locking pin. Under the elastic force of the second spring, the locking pin always has a tendency to extend from the sleeve and insert downward into the corresponding positioning hole on the top panel of the support frame.

3. The seat for an emergency vehicle according to claim 2, characterized in that: A positioning groove is arranged on the upper surface of the lock seat, and the small-diameter section orifice of the stepped hole of the lock seat is located at the bottom wall of the positioning groove. A downwardly protruding positioning protrusion is arranged on the lower surface of the lock cover, and the cross-sectional shape of the width direction of the positioning protrusion is adapted to the cross-sectional shape of the width direction of the positioning groove, so that when the width direction of the positioning protrusion is consistent with the width direction of the positioning groove, the positioning protrusion is just inserted downward into the positioning groove under the elastic force of the second spring, and the lock pin is in an extended state extending from the sleeve and downwardly inserted into the corresponding positioning hole of the top panel of the support frame, the length of the positioning protrusion is greater than the width of the positioning groove, and the depth of the positioning groove can be Ensure that when the lock cover overcomes the second spring force to lift the positioning protrusion, the locking rod and the locking pin upwards until the positioning protrusion is higher than the positioning slot, the locking pin is just in a retracted state of being pulled out from the corresponding positioning hole in the top panel of the support frame and retracted into the sleeve, and the length of the positioning protrusion is greater than the width of the positioning slot, so that when the lock cover overcomes the second spring force to lift the positioning protrusion, the locking rod and the locking pin upwards until the positioning protrusion is higher than the positioning slot, and the lock cover is rotated until the width direction of the positioning protrusion and the width direction of the positioning slot are rotated and misaligned with each other, the positioning protrusion will be pressed on the top of the positioning slot under the action of the second spring force, thereby keeping the locking pin in a retracted state.

4. The seat for an emergency vehicle according to claim 1, characterized in that: Stoppers are respectively inserted into the two side ends of the track, and the stoppers are detachably mounted on the corresponding track ends through locking bolts.

5. The seat for an emergency vehicle according to claim 1, characterized in that: The slides include: A slider is embedded in the track, and a plurality of rollers are installed on both sides of the slider. The slider slides along the track via the rollers.

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