Chassis truck with door closing interlocking and manual priority structure

Abstract

The utility model relates to a circuit breaker chassis truck, in particular to a chassis truck with a door closing interlocking and manual priority structure, which comprises an outer side plate, an operating shaft, a limiting sleeve, an interlocking mechanism, a microswitch and a trigger piece, and further comprises a microswitch and a trigger piece, the microswitch has an electric state in which the electric operating mechanism can be electrified and started and a manual priority state in which the electric operating mechanism cannot be electrified and started; the triggering piece is rotatably fixed on the chassis and is positioned between the microswitch and the limiting sleeve; and a second elastic acting piece is arranged to act on the triggering piece to enable the triggering piece to be far away from the microswitch. According to the utility model, a manual priority mechanism is additionally arranged on the chassis truck with a door closing interlocking function corresponding to the operating shaft, namely when the handle is inserted on the operating shaft, the limiting sleeve is pushed to the second position, and the triggering piece is pushed to rotate to trigger the microswitch, so that the electric operating mechanism cannot be electrified and started, and the safety of personnel is ensured.

Description

Technical Field

[0001] This utility model relates to a circuit breaker chassis vehicle, specifically to a chassis vehicle with a door closing interlock and manual priority structure. Background Technology

[0002] The applicant's prior patent CN201220709139.X discloses a chassis vehicle with a door-closing interlock, including a stationary frame, a chassis frame, a cabinet door, and an operating handle. The stationary frame is pivotally equipped with a lead screw, and the chassis frame has a nut screwed onto the lead screw. The cabinet door can move relative to the stationary frame between a closed position and an open position; the lead screw has a manual operation section, and the operating handle and the manual operation section can cooperate to be in a manual state. The cabinet door has an opening that corresponds to the manual operation section when the cabinet door is in the closed position. The stationary frame is equipped with an interlocking mechanism, which is movably connected to the stationary frame and moves between an interlocked position that restricts the operating handle to the manual state and an unlocked position. The movement of the cabinet door between the closed and open positions and the movement of the interlocking mechanism between the interlocked and unlocked positions constitute an interlock. The above structure realizes the door-closing interlock function, preventing safety accidents due to misoperation. However, in recent years, more and more chassis vehicles have added electric operating mechanisms. The electric operating mechanism is connected to the lead screw through a clutch mechanism, so that it can have both manual and electric operation functions at the same time. This brings the following problems: when the operating handle is sleeved outside the lead screw, the electric operating mechanism will be accidentally started, causing the operating handle to rotate with the lead screw. If there are operators present, there is a certain probability that it will cause safety problems for the personnel. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a chassis vehicle with a door closing interlock and manual priority structure.

[0004] The technical solution adopted by this utility model is as follows: A chassis vehicle with a door closing interlock and manual priority structure, comprising:

[0005] Outer side plate;

[0006] The operating shaft is rotatably mounted on the chassis and passes through the outer side panel, so that its drive unit is located outside the outer side panel.

[0007] A limiting sleeve is located outside the outer side plate and sleeved outside the operating shaft. It can slide relative to the outer side plate along the axial direction of the operating shaft. It has a first position sleeved outside the operating shaft drive part and a second position exposed outside the operating shaft drive part. A first elastic member acts on the limiting sleeve to keep it in the first position.

[0008] An interlocking mechanism is used to cooperate with a cabinet door to have an open state and a closed state. When the interlocking mechanism is in the open state, it locks the limit sleeve to keep it in the first position. When the interlocking mechanism is in the closed state, it releases the locking effect on the limit sleeve, allowing it to move between the first position and the second position.

[0009] It also includes a micro switch and a trigger, wherein the micro switch is mounted on the chassis and can be connected to the electric operating mechanism, and has an electric state that enables the electric operating mechanism to be powered on and started and a manual priority state that prevents the electric operating mechanism from being powered on and started.

[0010] The trigger is rotatably fixed on the chassis and located between the micro switch and the limiting sleeve. A second elastic member acts on the trigger to move it away from the micro switch. When the limiting sleeve is in the second position, the limiting sleeve acts on the trigger to trigger the micro switch to the manual priority state.

[0011] An L-shaped bracket is fixed on the outer surface of the outer side plate. The trigger is a fan-shaped cam that is rotatably connected to the L-shaped bracket via a first hinge shaft. The limiting sleeve is provided with a first pushing part located above the trigger. When the limiting sleeve is in the second position, the first pushing part interacts with the upper side of the trigger to rotate it toward the micro switch to trigger the micro switch to the manual priority state.

[0012] The second elastic element is a torsion spring sleeved outside the first hinge shaft. One end of the second elastic element is fixed on the L-shaped bracket and the other end elastically acts on the trigger element.

[0013] The interlocking mechanism includes a fixed frame, an interlocking rod, and a door lock component. The fixed frame is fixed to the outer surface of the outer side panel. The interlocking rod can slide linearly and is limited within the fixed frame. The door lock component is hinged to the fixed frame, allowing it to rotate relative to the fixed frame. One end of the door lock component is located outside the fixed frame and forms an action part that cooperates with the cabinet door. The interlocking rod and the door lock component are driven together. When the interlocking mechanism is in the open state, the interlocking rod extends between the limiting sleeve in the first position and the outer side of the outer side panel, preventing the limiting sleeve from moving to the second position. When the cabinet door is in the closed state, the cabinet door acts on the action part, causing the interlocking rod to move away from the limiting sleeve. A third action spring acts on the interlocking mechanism to keep the interlocking mechanism in the open state.

[0014] A transmission wheel is provided between the interlocking rod and the door lock. The transmission wheel is hinged to the fixed frame and has a protruding second pushing part. The interlocking rod has a mating groove, and the second pushing part extends into the mating groove.

[0015] The interlocking rod is provided with a spring limiting post and a spring abutment block. The end face of the fixing frame near the outer side plate is provided with a sliding groove that cooperates with the interlocking rod limiting. The interlocking rod is located in the sliding groove and the fixing frame is provided with a through hole for the end of the interlocking rod near the limiting sleeve to pass through. The third action spring is a compression spring sleeved outside the spring limiting post and its two ends abut against the spring abutment block and the inner wall of the sliding groove.

[0016] The working part is a hinged and fixed rotating wheel.

[0017] The limiting sleeve includes a mounting plate and a limiting plate, which are parallel to each other at a certain distance and connected by a connecting plate. Both the mounting plate and the limiting plate have through holes for the operating shaft to pass through. At least two limiting shafts are fixed on the outer side of the outer plate, and at least two limiting holes for the limiting shafts to pass through are provided on the mounting plate. The limiting sleeve can slide relative to the outer plate along the axial direction of the operating shaft through the cooperation of the limiting shafts and the limiting holes. The first elastic member is a compression spring sleeved on the limiting shaft and located between the mounting plate and the outer plate. The limiting plate is located on the side of the mounting plate away from the outer plate. When the limiting sleeve is in the first position, the operating shaft drive part is located on the inner side of the limiting plate near the outer plate. When the limiting sleeve is in the second position, the operating shaft drive part is at least partially located on the outer side of the limiting plate away from the outer plate. The interlocking mechanism and the trigger are located on both sides of the limiting sleeve.

[0018] The mounting plate cooperates with the trigger element. When the limiting sleeve is in the second position, the mounting plate acts on the trigger element to trigger the micro switch to the manual priority state.

[0019] The mounting plate and interlocking mechanism, when the door is open, extend into the space between the limiting sleeve in the first position and the outer side of the outer plate, preventing the limiting sleeve from moving to the second position.

[0020] The beneficial effects of this utility model are as follows: This utility model adds a manual priority mechanism to the corresponding operating shaft on the chassis vehicle with door closing interlock function. That is, when the handle is inserted into the operating shaft, the limit sleeve is pushed to the second position, which pushes the trigger to rotate and triggers the micro switch, thereby preventing the electric operating mechanism from being powered on and started, ensuring personnel safety. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0022] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0023] Figure 2 for Figure 1 Enlarged diagram of part A in the middle;

[0024] Figure 3 This is a partially enlarged schematic diagram of a cross-sectional view of one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the limiting sleeve in one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the limiting sleeve and the manual priority structure in one embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the manual priority structure in one embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the limiting sleeve and the door closing interlocking structure in one embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal transmission and engagement structure of the door closing interlocking structure in one embodiment of the present invention;

[0030] Figure 9 This is a bottom view of the door-closing interlocking structure in one embodiment of the present invention;

[0031] In the diagram, the components are: operating shaft-100, limit sleeve-200, first elastic element-210, mounting plate-220, first pushing part-221, limit hole-222, limit plate-230, connecting plate-240, micro switch-300, interlocking mechanism-400, fixing bracket-410, slide groove-411, interlocking rod-420, mating groove-421, spring limit post-422, spring abutment block-423, door lock component-430, action part-431, third action spring-440, transmission wheel-450, second pushing part-451, outer side plate-500, L-shaped bracket-510, limit shaft-520, trigger element-610, second elastic element-620. Detailed Implementation

[0032] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0033] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0034] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0035] A type of chassis vehicle, such as Figures 1-3 As shown, the chassis includes an outer side plate 500, an operating shaft 100, and a limiting sleeve 200. The operating shaft 100 is rotatably mounted on the chassis and passes through the outer side plate 500, with its drive unit located outside the outer side plate 500. By sleeved on the operating handle outside the driving unit of the operating shaft 100, the operating shaft 100 can be driven to move the chassis. The limiting sleeve 200 is located outside the outer side plate 500 and sleeved on the operating shaft 100. It can slide relative to the outer side plate 500 along the axial direction of the operating shaft 100, having a first position sleeved on the driving unit of the operating shaft 100 and a second position exposed above the driving unit of the operating shaft 100. A first elastic member 210 acts on the limiting sleeve 200 to keep it in the first position. When manual operation is required, the operating handle needs to push the limiting sleeve 200 inward until it forms a stable engagement with the driving unit of the operating shaft 100.

[0036] In this embodiment, a door interlocking structure and a manual priority structure are respectively provided on both sides of the limiting sleeve 200. Specifically, as shown... Figure 4As shown, the limiting sleeve 200 includes a mounting plate 220 and a limiting plate 230. The mounting plate 220 and the limiting plate 230 are arranged parallel to each other at a certain distance and are connected by a connecting plate 240. Both the mounting plate 220 and the limiting plate 230 are provided with through holes for the operating shaft 100 to pass through. At least two limiting shafts 520 are fixed on the outer surface of the outer plate 500. The mounting plate 220 is provided with at least two limiting holes 222 for the limiting shafts 520 to pass through. The limiting shafts 520 and the limiting holes 222 cooperate to make the limiting sleeve 200 relative to the outer plate. The 500 can slide along the axial direction of the operating shaft 100. The first elastic member 210 is a compression spring sleeved outside the limiting shaft 520 and located between the mounting plate 220 and the outer plate 500. The limiting plate 230 is located on the side of the mounting plate 220 away from the outer plate 500. When the limiting sleeve 200 is in the first position, the driving part of the operating shaft 100 is located on the inner side of the limiting plate 230 near the outer plate 500. When the limiting sleeve 200 is in the second position, the driving part of the operating shaft 100 is at least partially located on the outer side of the limiting plate 230 away from the outer plate 500. The door closing interlock mechanism and the manual priority mechanism are located on both sides of the limit sleeve 200 and cooperate with the limit plate 230. Specifically, when the cabinet door is opened, the door closing interlock mechanism limits the limit plate 230, preventing the operating handle from pushing the limit sleeve 200 inward to form a cooperative relationship with the driving part of the operating shaft 100. When the cabinet door is opened, the door closing interlock mechanism releases the limit on the limit plate 230, allowing the operating handle to form a cooperative relationship with the driving part of the operating shaft 100. When the operating handle can form a cooperative relationship with the driving part of the operating shaft 100, the limit plate 230 triggers the manual priority mechanism, preventing the electric operating mechanism from being powered on.

[0037] like Figures 5-6 As shown, the manual priority structure includes a micro switch 300 and a trigger 610. The micro switch 300 is mounted on the chassis and can signal-connect to the electric operating mechanism. It has an electric state that allows the electric operating mechanism to be energized and started, and a manual priority state that prevents the electric operating mechanism from being energized and started. An L-shaped bracket 510 is fixed on the outer surface of the outer side plate 500. The trigger 610 is a fan-shaped cam that is rotatably connected to the L-shaped bracket 510 through a first hinge shaft and is located between the micro switch 300 and the limiting sleeve 200. When the limiting sleeve 200 is in the second position, the first pushing part 221 interacts with the upper side of the trigger 610 to rotate it toward the micro switch 300 to trigger the micro switch 300 to the manual priority state.

[0038] The limiting sleeve 200 is provided with a first pushing part 221 located above the trigger member 610. Specifically, it is a horizontally oriented plane. The upper surface of the trigger member 610 is an inclined surface. When the limiting sleeve 200 is pushed inward, the horizontally oriented first pushing part 221 acts on the upper surface of the trigger member 610, causing the trigger member 610 to rotate downward and trigger the micro switch 300. The second elastic member 620 is a torsion spring sleeved outside the first hinge shaft. One end of the second elastic member 620 is fixed on the L-shaped bracket 510, and the other end elastically acts on the trigger member 610.

[0039] like Figures 7-9 As shown, the door-closing interlocking structure includes an interlocking mechanism 400, which cooperates with the cabinet door to have an open state and a closed state. In the open state, the interlocking mechanism 400 locks the limiting sleeve 200, holding it in a first position. In the closed state, the interlocking mechanism 400 releases the locking effect on the limiting sleeve 200, allowing it to move between the first and second positions. Specifically, the interlocking mechanism 400 includes a fixed frame 410, an interlocking rod 420, and a door lock 430. The fixed frame 410 is fixed to the outer surface of the outer side panel 500. The interlocking rod 420 can slide linearly and is confined within the fixed frame 410. The door lock 430 is hinged to the fixed frame 410, allowing it to rotate relative to the fixed frame 410. One end of the door lock 430 is located outside the fixed frame 410 and forms an active part 431 that cooperates with the cabinet door. The interlocking rod 420 and the door lock 430... The locking element 430 is engaged with the interlocking mechanism 400. When the interlocking mechanism 400 is in the open state, the interlocking rod 420 extends between the limiting sleeve 200 in the first position and the outer side of the outer panel 500, preventing the limiting sleeve 200 from moving to the second position. When the cabinet door is in the closed state, the cabinet door acts on the action part 431, causing the interlocking rod 420 to move away from the limiting sleeve 200. A third action spring 440 acts on the interlocking mechanism 400 to keep the interlocking mechanism 400 in the open state.

[0040] like Figure 8 As shown, a transmission wheel 450 is provided between the interlocking rod 420 and the door lock 430. The transmission wheel 450 is hinged to the fixed frame 410 and has a protruding second pushing part 451. The interlocking rod 420 has a mating groove 421, and the second pushing part 451 extends into the mating groove 421.

[0041] like Figure 8 , Figure 9As shown, the interlocking rod 420 is provided with a spring limiting post 422 and a spring abutment block 423. The end face of the fixing frame 410 near the outer side plate 500 is provided with a sliding groove 411 that cooperates with the interlocking rod 420 for limiting. The interlocking rod 420 is located in the sliding groove 411, and the fixing frame 410 is provided with a through hole for one end of the interlocking rod 420 near the limiting sleeve 200 to pass through. The third acting spring 440 is a compression spring sleeved outside the spring limiting post 422, and its two ends abut against the spring abutment block 423 and the inner wall of the sliding groove 411. The overall structure is easy to assemble. In order to adjust the position of the interlocking rod 420 to cooperate with the limiting sleeve 200, a pad is provided between the fixing frame 410 and the outer side plate 500.

[0042] The actuating part 431 is a hinged and fixed rotating wheel. When the cabinet door is closed, the cabinet door acts on the rotating wheel, causing the door lock 430 to rotate inward. The rotating wheel reduces the relative frictional resistance between the door lock 430 and the cabinet door.

[0043] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A chassis vehicle with a door closing interlock and manual priority structure, comprising: Outer side plate (500); The operating shaft (100) is rotatably mounted on the chassis and passes through the outer side plate (500) so that its drive unit is located outside the outer side plate (500); The limiting sleeve (200) is located outside the outer side plate (500) and sleeved outside the operating shaft (100). It can slide relative to the outer side plate (500) along the axial direction of the operating shaft (100). It has a first position sleeved outside the driving part of the operating shaft (100) and a second position exposed outside the driving part of the operating shaft (100). A first elastic member (210) is provided to act on the limiting sleeve (200) to keep it in the first position. Interlocking mechanism (400) is used to cooperate with cabinet door to have an open state and a closed state. When the interlocking mechanism (400) is in the open state, it locks the limiting sleeve (200) to keep it in the first position. When the interlocking mechanism (400) is in the closed state, it releases the locking effect on the limiting sleeve (200) so that it can move between the first position and the second position. The feature is that it further includes a micro switch (300) and a trigger (610). The micro switch (300) is mounted on the chassis and can be connected to the electric operating mechanism. It has an electric state that allows the electric operating mechanism to be powered on and a manual priority state that prevents the electric operating mechanism from being powered on. The trigger (610) is rotatably fixed on the chassis and located between the micro switch (300) and the limiting sleeve (200). A second elastic member (620) acts on the trigger (610) to move it away from the micro switch (300). When the limiting sleeve (200) is in the second position, the limiting sleeve (200) acts on the trigger (610) to trigger the micro switch (300) to the manual priority state.

2. The chassis vehicle with door closing interlock and manual priority structure according to claim 1, characterized in that: An L-shaped bracket (510) is fixed on the outer surface of the outer side plate (500). The trigger (610) is a fan-shaped cam rotatably connected to the L-shaped bracket (510) via a first hinge shaft. The limiting sleeve (200) is provided with a first pushing part (221) located above the trigger (610). When the limiting sleeve (200) is in the second position, the first pushing part (221) interacts with the upper side of the trigger (610) to rotate it toward the micro switch (300) to trigger the micro switch (300) to the manual priority state.

3. The chassis vehicle with door closing interlock and manual priority structure according to claim 2, characterized in that: The second elastic member (620) is a torsion spring sleeved outside the first hinge shaft. One end of the second elastic member (620) is fixed on the L-shaped bracket (510) and the other end elastically acts on the trigger member (610).

4. The chassis vehicle with door closing interlock and manual priority structure according to claim 1, characterized in that: The interlocking mechanism (400) includes a fixed frame (410), an interlocking rod (420), and a door lock (430). The fixed frame (410) is fixed to the outer surface of the outer side panel (500). The interlocking rod (420) can slide linearly and is confined within the fixed frame (410). The door lock (430) is hinged to the fixed frame (410) so that it can rotate relative to the fixed frame (410). One end of the door lock (430) is located outside the fixed frame (410) and forms an active part (431) that cooperates with the cabinet door. The interlocking rod (420)... The door lock (430) is engaged in a transmission mechanism. When the interlocking mechanism (400) is in the open state, the interlocking rod (420) extends into the space between the limiting sleeve (200) in the first position and the outer side of the outer panel (500), preventing the limiting sleeve (200) from moving to the second position. When the cabinet door is in the closed state, the cabinet door acts on the action part (431), causing the interlocking rod (420) to move away from the limiting sleeve (200). A third action spring (440) acts on the interlocking mechanism (400) to keep the interlocking mechanism (400) in the open state.

5. The chassis vehicle with door closing interlock and manual priority structure according to claim 4, characterized in that: A transmission wheel (450) is provided between the interlocking rod (420) and the door lock (430). The transmission wheel (450) is hinged to the fixed frame (410) and has a protruding second pushing part (451). The interlocking rod (420) has a mating groove (421), and the second pushing part (451) extends into the mating groove (421).

6. The chassis vehicle with door closing interlock and manual priority structure according to claim 4, characterized in that: The interlocking rod (420) is provided with a spring limiting post (422) and a spring abutment block (423). The end face of the fixing frame (410) near the outer side plate (500) is provided with a sliding groove (411) that cooperates with the interlocking rod (420) for limiting. The interlocking rod (420) is located in the sliding groove (411) and the fixing frame (410) is provided with a through hole for one end of the interlocking rod (420) near the limiting sleeve (200) to pass through. The third action spring (440) is a compression spring sleeved outside the spring limiting post (422) and its two ends abut against the spring abutment block (423) and the inner wall of the sliding groove (411).

7. The chassis vehicle with door closing interlock and manual priority structure according to claim 4, characterized in that: The working part (431) is a hinged and fixed rotating wheel.

8. The chassis vehicle with door closing interlock and manual priority structure according to any one of claims 1-7, characterized in that: The limiting sleeve (200) includes a mounting plate (220) and a limiting plate (230). The mounting plate (220) and the limiting plate (230) are arranged parallel to each other at a certain distance and are connected by a connecting plate (240). Both the mounting plate (220) and the limiting plate (230) are provided with through holes for the operating shaft (100) to pass through. At least two limiting shafts (520) are fixed on the outer surface of the outer plate (500). The mounting plate (220) is provided with at least two limiting holes (222) for the limiting shafts (520) to pass through. Through the cooperation of the limiting shafts (520) and the limiting holes (222), the limiting sleeve (200) can be positioned relative to the outer plate (500) along the axial direction of the operating shaft (100). Sliding, the first elastic member (210) is a compression spring sleeved outside the limiting shaft (520) and located between the mounting plate (220) and the outer plate (500). The limiting plate (230) is located on the side of the mounting plate (220) away from the outer plate (500). When the limiting sleeve (200) is in the first position, the driving part of the operating shaft (100) is located on the inner side of the limiting plate (230) near the outer plate (500). When the limiting sleeve (200) is in the second position, the driving part of the operating shaft (100) is at least partially located on the outer side of the limiting plate (230) away from the outer plate (500). The interlocking mechanism (400) and the trigger (610) are located on both sides of the limiting sleeve (200).

9. The chassis vehicle with door closing interlock and manual priority structure according to claim 8, characterized in that: The mounting plate (220) cooperates with the trigger (610). When the limiting sleeve (200) is in the second position, the mounting plate (220) acts on the trigger (610) to trigger the micro switch (300) to the manual priority state.

10. The chassis vehicle with door closing interlock and manual priority structure according to claim 8, characterized in that: The mounting plate (220) and the interlocking mechanism (400) are positioned such that the interlocking mechanism (400) in the open state extends between the limiting sleeve (200) in the first position and the outer side of the outer plate (500), preventing the limiting sleeve (200) from moving to the second position.

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