Propelling device and switch cabinet handcart

Abstract

The invention relates to the field of switch cabinets, and provides a propulsion device and a switch cabinet handcart, and the propulsion device is installed on a handcart frame and comprises a supporting member, a screw rod, a nut seat and a pivot head. The pivoting head is installed in the middle of the supporting piece, and the lead screw is connected with the pivoting head; the nut seat is in threaded connection with the screw rod and is externally connected to a handcart type circuit breaker; the device further comprises a supporting locking piece, a bearing seat, a circuit breaker locking piece and a linkage piece. The support locking piece is connected with the support piece and is provided with a pivoting end and a clamping end; and the pivoting end is pivotally connected with the pivoting head, slides or rotates along the pivoting head, penetrates through the supporting piece and is arranged outside the screw rod in a sleeving manner. The connecting structure has the effect of improving the connecting stability through multiple locking.

Description

Technical Field

[0001] The present application relates to the technical field of switch cabinets, and in particular to a propulsion device and a switch cabinet trolley. Background Art

[0002] In high-voltage switchgear, circuit breakers and various electrical units are often made into switchgear trolleys to facilitate maintenance and improve the reliability of power supply, making them movable parts. Commonly used switchgear trolleys include circuit breaker trolleys, isolator trolleys, voltage transformer trolleys, etc. These switchgear trolleys need to adopt necessary propulsion devices to achieve the push and pull of the trolleys in the switchgear, while preventing workers from putting their hands into the switchgear for dangerous operations. Therefore, the propulsion device has a necessary interlocking function.

[0003] The general propulsion mechanism adopts a screw rod and a nut, which is connected to the trolley circuit breaker by the nut, and then the screw rod is rotated by the external rotating handle. When the screw rod rotates, the nut is fixed by the trolley circuit breaker and cannot rotate with the screw rod. Therefore, it can drive the trolley circuit breaker to move inside the switch cabinet, thereby achieving the propulsion effect. Generally, after pushing the trolley circuit breaker into the switch cabinet, the external rotating handle is taken out and the cabinet door is closed. However, this method cannot ensure a stable connection between the trolley circuit breaker and the switch cabinet. An unstable connection is easy to disconnect. For example, a slight earthquake or collision will cause the connection point of the trolley circuit breaker to be unstable, causing safety problems and circuit failures. Summary of the invention

[0004] In order to improve the above-mentioned problems, the present application provides a propulsion device and a switch cabinet trolley.

[0005] The propulsion device and switch cabinet trolley provided in this application adopt the following technical solutions: A propulsion device is installed on a trolley frame, comprising a support member, a screw rod, a nut seat and a pivot head; the pivot head is installed in the middle of the support member, and the screw rod is connected to the pivot head; the nut seat is threaded with the screw rod and is externally connected to the trolley-type circuit breaker; it also includes a support locking member, a bearing seat, a circuit breaker locking member and a linkage member; the support locking member is connected to the support member and is provided with a pivot end and a clamping end; the pivot end is pivotally connected to the pivot head, and the pivot end slides or rotates along the pivot head, and passes through the support member and is sleeved on the outside of the screw rod The clamping end is connected to the pivot end, and is slidably connected along the support member, and is clamped with the external switch cabinet; the bearing seat is pivotally connected to the end of the screw rod away from the support member, and is connected to the trolley frame; the circuit breaker locking member is installed on the bearing seat, and is clamped with the circuit breaker locking member when the circuit breaker moves along the screw rod with the nut seat; one end of the linkage member is connected to the circuit breaker locking member, and the other end is connected to the pivot end, and the pivot end causes the circuit breaker locking member to be separated from the clamping state with the circuit breaker through the linkage member.

[0006] By adopting the above technical solution, when the trolley is pushed into the switch cabinet, the support member is located at the cabinet door of the switch cabinet, and the support frame locking member is engaged with the inner wall of the switch cabinet, so that the support member cannot continue to move forward or backward, thereby achieving a locking effect and ensuring safety in use. Subsequently, the pivot head is rotated, and the pivot head drives the screw rod to rotate, so that the nut seat of the trolley-type circuit breaker moves along the screw rod into the switch cabinet. When it moves to the bearing seat, the circuit breaker locking member clamps the circuit breaker, thereby locking the circuit breaker. At this time, the circuit breaker and the support member are locked synchronously and cannot move. The double locking effect ensures safety while providing a stable connection. When the circuit breaker needs to be replaced, the pivot end disconnects the clamping state of the circuit breaker locking member and the circuit breaker through the linkage member, and the pivot head can be rotated to take out the circuit breaker.

[0007] Optionally, the support locking member includes a rotating part, a pulling part, a sliding part and a wedge-shaped locking part; the rotating part is pivotally connected to the pivot head, and is sleeved on the pivot head, and slides along the pivot head, so that the rotating part passes through the support member and extends toward the screw rod, and sleeves the screw rod; the pulling part is elastic, the pulling part is connected to the rotating part on one side of the screw rod, and when the rotating part rotates, the pulling part is wrapped around the surface of the rotating part; the sliding part is slidably connected to the side of the support member close to the screw rod, and is connected to the pulling part; the wedge-shaped locking part is connected to the end of the sliding part away from the pulling part, and is clamped to the external switch cabinet.

[0008] By adopting the above technical solution, when the support member moves inward along the switch cabinet, the wedge-shaped locking part is squeezed by the cabinet opening, and moves along the support member toward the screw rod through the sliding part until it moves to the clamping groove in the cabinet opening, and the wedge-shaped locking part is clamped into the clamping groove. After the support member is locked, when it needs to be taken out, the rotating part is rotated, and the rotating part drives the pulling part to wind, so that the pulling part pulls the sliding part toward the screw rod, and simultaneously pulls the wedge-shaped locking part, so that the wedge-shaped locking part is disengaged from the clamping groove of the switch cabinet, and the support member can be released from the locked state.

[0009] Optionally, an elastic part is further connected to the sliding part, and a limiting protrusion is provided on the side of the support member close to the screw rod. The elastic part abuts against the limiting protrusion and applies an elastic force to the sliding part in the direction of the wedge-shaped locking part.

[0010] By adopting the above technical solution, the elastic part abuts against the limiting protrusion and applies elastic force to the sliding part in the direction of the wedge-shaped locking part, so that the sliding part and the wedge-shaped locking part have sufficient elastic force to be inserted into the clamping groove of the switch cabinet, thereby realizing automatic insertion and fixing of the support member.

[0011] Optionally, the single pulling portion, the sliding portion, the wedge-shaped locking portion and the elastic portion form a group, and at least two groups are arranged on the support member.

[0012] By adopting the above technical solution, the two groups are respectively located at the two ends of the support member, so that both ends of the support member are limited and fixed by the wedge-shaped locking part, ensuring that the support member is locked firmly and accurately.

[0013] Optionally, a winding mark for the pulling part to be embedded is provided on the surface of the rotating part.

[0014] By adopting the above technical solution, when the pulling part rotates along the surface of the rotating part, it can be embedded in the winding groove and wound around the surface of the rotating part along the winding groove, so that the winding trajectory of the pulling part is stable, and when multiple groups of pulling parts are set, there will be no mutual interference.

[0015] Optionally, the circuit breaker locking member includes a fixing portion, a connecting portion and a wedge-shaped snap-in portion; the fixing portion is mounted on the bearing seat; the connecting portion is connected to the fixing portion and extends toward the support member; the wedge-shaped snap-in portion is mounted on the connecting portion, and the wedge-shaped surface is directed toward the support member, and when the trolley-type circuit breaker moves to the wedge-shaped snap-in portion, the wedge-shaped snap-in portion is snap-engaged with the trolley-type circuit breaker; and the linkage member is connected to the connecting portion.

[0016] By adopting the above technical solution, the circuit breaker is moved along the switch cabinet by using a lead screw until the circuit breaker contacts the wedge-shaped snap-in portion and presses the wedge-shaped snap-in portion downward. When the circuit breaker abuts against the bearing seat, the wedge-shaped snap-in portion snaps into the fixing groove at the bottom of the circuit breaker, thereby completing the fixing and locking of the circuit breaker position. When the circuit breaker needs to be disengaged, the pivot end drives the linkage to separate the wedge-shaped snap-in portion from the circuit breaker, thereby disconnecting the snap-in state.

[0017] Optionally, the linkage member includes an elastic pull rope and a limiting portion; a plurality of limiting portions are provided and are respectively installed on the surface of the trolley frame; one end of the elastic pull rope is connected to the pivot end, and the other end passes through the limiting portion in turn and is connected to the connecting portion.

[0018] By adopting the above technical solution, the moving track of the elastic pull rope is fixed by the limiting part, so that the elastic pull rope cannot deviate from the moving track. At the same time, when the elastic pull rope is driven by the rotating part to be wound along the surface of the rotating part, the elastic pull rope can pull the connecting part downward, which can also achieve the effect of separating the wedge-shaped clamping part from the fixing groove of the circuit breaker.

[0019] Optionally, the linkage part also includes a sleeve part and a pushing part; the sleeve part is sleeved on the pivot end, and two raised rings are provided on the pivot end. The sleeve part is located between the two raised rings and is clamped with the pivot end through the raised rings; the pushing part is connected to the sleeve part and is slidably connected to the trolley frame; the elastic pull rope is connected to the pushing part after passing through the limiting part.

[0020] By adopting the above technical solution, the sleeve portion and the push portion can prevent the linkage member from directly contacting the pivot end, that is, the rotating portion. Compared with directly using an elastic pull rope, the safety is further improved.

[0021] Optionally, the connecting portion and the elastic drawstring are detachably connected.

[0022] By adopting the above technical solution, the elastic draw cord can be replaced at any time in a detachable manner, thereby preventing the elastic draw cord from being damaged and losing its elasticity or toughness due to long-term use, thereby extending the overall service life.

[0023] A switch cabinet trolley comprises a propulsion device.

[0024] By adopting the above technical solution, the trolley has the functions of automatic positioning and locking when it is inserted into the switch cabinet.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the trolley is pushed into the switch cabinet, the support is located at the door of the switch cabinet, and the support frame locking piece is engaged with the inner wall of the switch cabinet, so that the support cannot move forward or backward, thereby achieving a locking effect and ensuring the safety of use. Then, the pivot head is rotated, and the pivot head drives the screw rod to rotate, so that the nut seat of the trolley-type circuit breaker moves along the screw rod into the switch cabinet. When it moves to the bearing seat, the circuit breaker locking piece clamps the circuit breaker, thereby locking the circuit breaker. At this time, the circuit breaker and the support are locked synchronously and cannot move, which ensures safety and provides a stable connection. When the circuit breaker needs to be replaced, the pivot end disconnects the clamping state of the circuit breaker locking piece and the circuit breaker through the linkage piece, and the pivot head can be rotated to take out the circuit breaker; 2. When the support moves inward along the switch cabinet, the wedge-shaped locking part is squeezed by the cabinet opening, and moves along the support toward the screw rod through the sliding part until it moves to the clamping groove in the cabinet opening, and the wedge-shaped locking part is clamped into the clamping groove. After the support is locked, when it needs to be taken out, the rotating part is rotated, and the rotating part drives the pulling part to wind, so that the pulling part pulls the sliding part toward the screw rod, and pulls the wedge-shaped locking part synchronously, so that the wedge-shaped locking part is separated from the clamping groove of the switch cabinet, and the support can be released from the locked state; 3. The elastic part abuts against the limiting protrusion and applies elastic force from the sliding part to the wedge-shaped locking part, so that both the sliding part and the wedge-shaped locking part have sufficient elastic force to be inserted into the clamping groove of the switch cabinet, thereby realizing automatic insertion and fixing of the support member; 4. The two groups are located at both ends of the support member, so that both ends of the support member are limited and fixed by the wedge-shaped locking part, ensuring that the support member is locked firmly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of a propulsion device in one embodiment of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of a support member in some embodiments of the present application; Figure 3 is a schematic diagram of a three-dimensional structure of a support member from another perspective in some embodiments of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the bearing seat in some embodiments of the present application; Figure 5 is a schematic diagram of the side view structure of the propulsion device in some embodiments of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of a switch cabinet trolley in some embodiments of the present application; The marks in the accompanying drawings are: 1. switch cabinet trolley, 11. trolley frame, 2. support member, 21. limiting protrusion, 3. screw rod, 4. nut seat, 5. pivot head, 6. support locking member, 61. rotating part, 611. winding mark, 62. pulling part, 63. sliding part, 64. wedge-shaped locking part, 65. elastic part, 66. raised ring, 7. bearing seat, 8. circuit breaker locking member, 81. fixing part, 82. connecting part, 83. wedge-shaped snap-in part, 9. linkage member, 91. elastic pull rope, 92. limiting part, 93. sleeve part, 94. pushing part. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0029] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0030] In addition, the terms "first" and "second" are only used to indicate the target, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0032] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0033] The embodiments of the present application disclose a propulsion device and a switch cabinet trolley.

[0034] A propulsion device and a switch cabinet trolley are applied to a switch cabinet and a trolley-type circuit breaker. The trolley-type circuit breaker is placed on the trolley. The trolley is connected to a trolley frame 11, and the trolley frame 11 and the trolley are detachably connected so that the trolley frame 11 and the trolley-type circuit breaker can enter the switch cabinet. The propulsion device of the present application is installed on the trolley frame 11.

[0035] refer to Figure 1 and Figure 2 As shown, it includes a support member 2, a screw rod 3, a nut seat 4 and a pivot head 5; the support member 2 can adopt a beam-type bracket and be vertically arranged, the pivot head 5 is installed in the middle of the support member 2, and the pivot head 5 can be connected to an external pivot switch, that is, the pivot head 5 can adopt a hexagonal shaft, and the external pivot switch can adopt a rotating handle with a hexagonal shaft hole. After the hexagonal shaft hole is inserted into the hexagonal shaft, the rotating handle can be used to rotate the pivot head 5, and the screw rod 3 is connected to the pivot head 5, so the screw rod 3 can rotate with the pivot head 5.

[0036] The nut seat 4 is threadedly connected to the screw rod 3 and is externally connected to the trolley-type circuit breaker. Since the trolley-type circuit breaker is connected to the nut seat 4, when the screw rod 3 is driven to rotate by the pivot head 5, the nut seat 4 is fixed by the trolley-type circuit breaker and cannot rotate with the screw rod 3. Therefore, it can drive the trolley-type circuit breaker to move inside the switch cabinet, thereby achieving a propulsion effect.

[0037] Among them, it also includes a support locking member 6, a bearing seat 7, a circuit breaker locking member 8 and a linkage member 9; the support locking member 6 is connected to the support member 2, and is provided with a pivot end and a clamping end, the pivot end is connected to the pivot head 5, and the pivot end slides or rotates along the pivot head 5, and passes through the support member 2 and is sleeved on the outside of the screw rod 3. The support member 2 is provided with a through hole for the pivot end to rotate, and the size of the pivot end is larger than the pivot head 5, so that it can rotate along the outer wall of the pivot head 5. At the same time, after the pivot end passes through the support member 2, it is sleeved on the outside of the screw rod 3, so that the pivot end can not only rotate along the outer wall of the pivot head 5, but also slide along the pivot head 5, that is, the pivot end can pass through the limit of the pivot head 5, move along the surface of the pivot head 5 toward the screw rod 3, or move away from the screw rod 3, and the horizontal position of the pivot end can be adjusted.

[0038] The clamping end is connected to the pivot end, and is slidably connected along the support member 2, and is clamped with the external switch cabinet. The external switch cabinet is provided with a accommodating cavity for accommodating the trolley-type circuit breaker, and the cavity opening of the accommodating cavity is the cabinet opening, and a clamping groove can be provided at the accommodating cavity opening. The clamping end can be driven by the pivot end to be clamped into or removed from the clamping groove to fix the position of the support member 2 at the cavity opening of the accommodating cavity. When the cabinet door of the switch cabinet closes the accommodating cavity to ensure the safety of the switch cabinet, a pivot opening for connecting the rotating handle is provided at the cabinet door of the switch cabinet, so that the pivot head 5 can be connected to the external rotating handle, and the pivot end can also be pulled out and rotated or force is applied by external tools such as insulating pliers to move along the pivot head 5.

[0039] The bearing seat 7 is pivotally connected to one end of the screw rod 3 away from the support member 2, and is connected to the trolley frame 11 of the trolley. The pivot head 5 provides support for one end of the screw rod 3, and the bearing seat 7 provides support for the other end of the screw rod 3, ensuring that the screw rod 3 can maintain a stable position during rotation.

[0040] The circuit breaker locking piece 8 is installed on the bearing seat 7. As the circuit breaker moves along the screw rod 3 with the nut seat 4, it is engaged with the circuit breaker locking piece 8. A fixing groove can be set at the bottom of the circuit breaker. When the circuit breaker moves along the screw rod 3 to the bearing seat 7 through the nut seat 4, the engaging end of the circuit breaker locking piece 8 can be inserted into the fixing groove to lock the circuit breaker, so that the circuit breaker cannot move further, thereby ensuring safety.

[0041] One end of the linkage member 9 is connected to the circuit breaker locking member 8, and the other end is connected to the pivot end. When the circuit breaker needs to be separated or replaced or repaired, the pivot end rotates or slides along the pivot head 5, so that the linkage member 9 is driven to disengage from the clamping state of the circuit breaker locking member 8, thereby restoring the circuit breaker to a movable state, and the circuit breaker can be replaced or repaired.

[0042] Specifically, when the trolley is pushed into the switch cabinet, the support member 2 is located at the door of the switch cabinet, and the support frame locking member is engaged with the inner wall of the switch cabinet, so that the support member 2 cannot continue to move forward or backward, thereby achieving a locking effect and ensuring safety in use. Subsequently, the pivot head 5 is rotated, and the pivot head 5 drives the screw rod 3 to rotate, so that the trolley-type circuit breaker nut seat 4 moves along the screw rod 3 into the switch cabinet. When it moves to the bearing seat 7, the circuit breaker locking member 8 clamps the circuit breaker, thereby locking the circuit breaker. At this time, the circuit breaker and the support member 2 are locked synchronously and cannot move, which ensures safety while providing a stable connection.

[0043] When the circuit breaker needs to be replaced, the pivot end is rotated or moved, and the pivot end disconnects the clamping state of the circuit breaker locking member 8 from the circuit breaker through the linkage member 9, and the pivot head 5 can be rotated to take out the circuit breaker.

[0044] Among them, reference Figure 2 As shown, the pivot end away from the screw rod 3 can be provided with a knob with anti-slip texture to facilitate the rotation or pulling of the pivot end, and the knob is hollow so that the pivot head 5 can be located in the knob without hindering the rotation of the pivot head 5.

[0045] For further reference, Figure 3 As shown, the support locking member 6 includes a rotating portion 61, a pulling portion 62, a sliding portion 63 and a wedge-shaped locking portion 64; the rotating portion 61 is pivotally connected to the pivot head 5, and the rotating portion 61 can be a rotating cylinder or a rotating tube made of insulating materials such as plastic or rubber. The inner diameter of the rotating portion 61 is larger than the outer diameter of the pivot head 5, so it can be sleeved on the pivot head 5. At the same time, when the pivot head 5 drives the screw rod 3 to rotate, the rotating portion 61 is not affected by the rotation, and the rotating portion 61 can slide along the pivot head 5, so that the rotating portion 61 passes through the support member 2 and extends in the direction of the screw rod 3. The diameter of the pivot head 5 is greater than or equal to the diameter of the screw rod 3. When the rotating portion 61 is sleeved on the pivot head 5, the screw rod 3 is also sleeved at the same time, so that when the screw rod 3 and the pivot head 5 rotate, it will not affect the rotating portion 61.

[0046] The pulling part 62 is elastic, and the pulling part 62 is connected to the rotating part 61 on one side of the screw rod 3. When the rotating part 61 rotates, the pulling part 62 is wrapped around the surface of the rotating part 61. The pulling part 62 can adopt a pulling rope. The pulling rope can be made of rubber or plastic material and has a certain elasticity, so that the pulling part 62 has a certain rebound effect and can be wrapped around the surface of the rotating part 61, so that when the rotating part 61 rotates, the pulling part 62 can be wrapped around the rotating part 61.

[0047] The sliding part 63 is slidably connected to the side of the support member 2 close to the screw rod 3, and is connected to the pulling part 62. The sliding part 63 can be a sliding frame or a sliding rod made of insulating material. A limiting groove can be set on the support member 2, and the sliding part 63 can slide along the limiting groove. If the sliding part 63 is a sliding rod, the support member 2 can also be provided with a limiting ring. The sliding rod passes through the limiting ring and slides along the support member 2, and is connected to the pulling part 62 at the same time, so that when the pulling part 62 is wound along the rotating part 61, it can pull the sliding part 63 to slide along the support member 2.

[0048] The wedge-shaped locking portion 64 is connected to the end of the sliding portion 63 away from the pulling portion 62, and is clamped with the external switch cabinet. The wedge-shaped locking portion 64 can adopt a wedge-shaped block structure, and the wedge-shaped surface faces the direction of the screw rod 3, so that when the support member 2 moves to the cabinet opening of the switch cabinet, the wedge-shaped surface of the wedge-shaped locking portion 64 presses against the cabinet opening, and as the wedge-shaped locking portion 64 is continuously extended and squeezed, the wedge-shaped locking portion 64 moves along the support member 2 toward the screw rod 3 through the sliding portion 63 until the wedge-shaped locking portion 64 is clamped in the clamping groove in the accommodating cavity, so that the position of the support member 2 can be fixed to prevent the support member 2 from continuing to move, thereby ensuring the accurate position of the support member 2 and providing a safe and precise locking effect.

[0049] Specifically, when the support member 2 moves inward along the switch cabinet, the wedge-shaped locking portion 64 is squeezed by the cabinet opening, and moves along the support member 2 toward the screw rod 3 through the sliding portion 63 until it moves to the snap-in groove in the cabinet opening, and the wedge-shaped locking portion 64 is snapped into the snap-in groove. After the support member 2 is locked, when it needs to be taken out, the rotating portion 61 is rotated, and the rotating portion 61 drives the pulling portion 62 to wrap around, so that the pulling portion 62 pulls the sliding portion 63 toward the screw rod 3, and simultaneously pulls the wedge-shaped locking portion 64, so that the wedge-shaped locking portion 64 is disengaged from the snap-in groove of the switch cabinet, and the support member 2 can be released from the locked state.

[0050] Further, refer to Figure 3 As shown, the sliding portion 63 is also connected to an elastic portion 65, and the elastic portion 65 can be a spring made of insulating rubber or plastic material. A limiting protrusion 21 is provided on the side of the support member 2 close to the screw rod 3. The elastic portion 65 abuts against the limiting protrusion 21 and applies an elastic force on the sliding portion 63 in the direction of the wedge-shaped locking portion 64, so that the sliding portion 63 and the wedge-shaped locking portion 64 have sufficient elastic force to be inserted into the clamping groove of the switch cabinet, thereby realizing automatic insertion and fixing of the support member 2.

[0051] In order to improve the stability of the connection of the elastic part 65 , a protrusion may be simultaneously provided on the sliding part 63 for stable connection with the elastic part 65 .

[0052] Further, refer to Figure 1 or Figure 3As shown, a single pulling portion 62, a sliding portion 63, a wedge-shaped locking portion 64 and an elastic portion 65 form a group, and at least two groups are arranged on the support member 2, and the two groups are respectively located at both ends of the support member 2, so that both ends of the support member 2 are limited and fixed by the wedge-shaped locking portion 64, thereby ensuring that the support member 2 is locked firmly and accurately. At the same time, if more than two groups are arranged, one or more groups can be arranged under the screw rod 3 to realize the fixation of multiple groups of wedge-shaped locking portions 64.

[0053] Among them, when setting up multiple groups, the same number of card slots need to be opened in the switch cabinet. Considering that the number of card slots should not be too much to affect safety, two groups are the best.

[0054] Furthermore, refer to Figure 3 As shown, a winding mark 611 is provided on the surface of the rotating portion 61 for the pulling portion 62 to be embedded in. The winding mark 611 is preferably spiral. After the spiral winding mark is provided, the pulling portion 62 can be embedded in the winding mark and wound around the surface of the rotating portion 61 along the winding mark when rotating along the surface of the rotating portion 61, so that the winding trajectory of the pulling portion 62 is stable. When multiple groups of pulling portions 62 are provided, there will be no mutual interference. At the same time, when the rotating portion 61 moves along the pivot head 5, the pulling portion 62 is confined in the winding mark and will not detach from the rotating portion 61.

[0055] In some embodiments, reference Figure 4 As shown, the circuit breaker locking member 8 includes a fixing portion 81, a connecting portion 82 and a wedge-shaped snap-in portion 83; the circuit breaker locking member 8 is used to lock the circuit breaker, and a fixing groove is set at the bottom of the circuit breaker. The fixing portion 81 is installed on the bearing seat 7, specifically located at one end away from the support member 2 or the top of the bearing seat 7. The fixing portion 81 can adopt a fixing frame of insulating material, and the connecting portion 82 is connected to the fixing portion 81 and extends toward the support member 2. The connecting portion 82 can adopt a connecting frame, and the connecting frame can be set to bend according to the position of the fixing groove to adapt to the position of the fixing groove, so as to provide accurate connection.

[0056] The wedge-shaped snap-in portion 83 is installed on the connecting portion 82, and the wedge-shaped surface is directed toward the support member 2. When the trolley-type circuit breaker moves to the wedge-shaped snap-in portion 83, the wedge-shaped surface of the wedge-shaped snap-in portion 83 contacts the bottom of the trolley-type circuit breaker, and the wedge-shaped snap-in portion 83 is pressed down until the fixing groove at the bottom of the trolley-type circuit breaker moves below the wedge-shaped snap-in portion 83, so that the wedge-shaped snap-in portion 83 is inserted into the fixing groove, and at the same time, the trolley-type circuit breaker synchronously abuts against the bearing seat 7 to complete the locking and position fixing of the circuit breaker.

[0057] The linkage member 9 is connected to the connecting portion 82. The linkage member 9 can be used to disengage the wedge-shaped snap-in portion 83 from the fixing groove of the circuit breaker when the circuit breaker needs to be released from the locked state. The linkage member 9 is driven by the pivot end, that is, the linkage member 9 can be driven by the rotating portion 61 to pull the connecting portion 82, so that the wedge-shaped snap-in portion 83 on the connecting portion 82 is separated from the circuit breaker.

[0058] Specifically, the circuit breaker is moved along the switch cabinet by means of the lead screw 3 until the circuit breaker contacts the wedge-shaped snap-in portion 83 and presses the wedge-shaped snap-in portion 83 downward. When the circuit breaker abuts against the bearing seat 7, the wedge-shaped snap-in portion 83 snaps into the fixing groove at the bottom of the circuit breaker, thereby completing the fixing and locking of the circuit breaker position. When the circuit breaker needs to be disengaged, the pivot end drives the linkage member 9 to separate the wedge-shaped snap-in portion 83 from the circuit breaker, thereby disconnecting the snap-in state.

[0059] In some embodiments, reference Figure 3 and Figure 4 As shown, the linkage member 9 includes an elastic pull rope 91 and a limiting portion 92; a plurality of limiting portions 92 are provided, which are respectively installed on the support member 2 and the surface of the trolley frame 11. The limiting portion 92 can adopt a limiting ring, which is evenly installed on the top surface of the trolley frame 11. One end of the elastic pull rope 91 is connected to the pivot end, that is, the rotating portion 61, so that the rotating portion 61 can drive the elastic pull rope 91 to move when it rotates, and the other end passes through the limiting portion 92 and is connected to the connecting portion 82. The moving trajectory of the elastic pull rope 91 is fixed by the limiting portion 92, so that the elastic pull rope 91 cannot deviate from the moving trajectory. At the same time, when the elastic pull rope 91 is driven by the rotating portion 61 to be wound along the surface of the rotating portion 61, the elastic pull rope 91 can pull the connecting portion 82 downward, which can also achieve the effect of separating the wedge-shaped clamping portion 83 from the fixing groove of the circuit breaker.

[0060] Among them, if the linkage part 9 is set as this embodiment, a limit ring can be set at the pivot end so that the pivot end does not need to slip, and only needs to be rotated to solve the separation of the support part 2 and the circuit breaker locking part 8. Therefore, setting a limit ring to limit the slippage of the pivot end can further ensure the stability of the connection.

[0061] The rotating portion 61 may be provided with winding grooves for the elastic pull cord 91 to be embedded in, so that the winding position of the elastic pull cord 91 is fixed to prevent it from being separated from the rotating portion 61 .

[0062] On the other hand, reference Figure 5As shown, the linkage member 9 can also be provided with a sleeve portion 93 and a push portion 94. The sleeve portion 93 is sleeved on the pivot end, and two raised rings 66 are provided on the pivot end. The sleeve portion 93 is located between the two raised rings 66 and is clamped with the pivot end through the raised ring 66. The sleeve portion 93 can adopt a sleeve ring made of insulating material. The inner diameter of the sleeve ring is larger than the outer diameter of the pivot end, that is, the rotating portion 61, and the axis of the rotating portion 61 and the axis of the sleeve ring are located on the same axis. The outer diameter of the raised ring 66 is larger than the inner diameter of the sleeve portion 93, so that the sleeve portion 93 cannot be separated from the raised ring 66. When the rotating portion 61 drives the raised ring 66 to move along the pivot head 5, the raised ring 66 contacts the sleeve portion 93, thereby moving the sleeve portion 93.

[0063] The sleeve portion 93 does not contact the pivot end during normal use, so that even if there is a risk of leakage, the sleeve portion 93 will not transmit electricity to the pivot end through contact. The sleeve portion 93 only contacts through the raised ring 66 when the pivot end moves, further ensuring the safety of the connection.

[0064] The push portion 94 is connected to the sleeve portion 93 and is slidably connected to the trolley. The push portion 94 can be a push frame made of insulating material. When the sleeve portion 93 moves, it can drive the push portion 94 to move synchronously along the trolley frame 11.

[0065] After the elastic pull rope 91 passes through the limiting portion 92, it is connected to the pushing portion 94. When the pushing portion 94 drives the elastic pull rope 91 to move, the elastic pull rope 91 presses down the connecting portion 82 to make the wedge-shaped snap-in portion 83 bend downward, so that the wedge-shaped snap-in portion 83 is separated from the fixing groove of the circuit breaker, thereby completing the separation effect.

[0066] Through the sleeve portion 93 and the push portion 94 , the linkage member 9 can be prevented from directly contacting the pivot end, ie, the rotating portion 61 . Compared with directly using the elastic pull rope 91 , the safety is further improved.

[0067] Furthermore, the connecting portion 82 and the elastic pull cord 91 are detachably connected, and the detachable connection can be a buckle connection or a clamp connection, such as an insulating hook is provided on the elastic pull cord 91, and an insulating hanging ring is provided on the connecting portion 82, and the two can be hung on each other. In this way, the elastic pull cord 91 can be replaced at any time to avoid damage to the elastic pull cord 91 due to long-term use and loss of elasticity or toughness, thereby extending the overall service life.

[0068] In some embodiments, an external thread may be provided on the outer wall of the pivot end, that is, an external thread is provided on the surface of the rotating part 61, a threaded hole may be provided on the support member 2, and the pivot end is screwed to the threaded hole through the external thread. The pivot head 5 may be provided with a connecting frame at one end of the support member 2 where the screw rod 3 is provided, and another bearing seat 7 is provided on the connecting frame to ensure the installation stability of the pivot head 5.

[0069] By means of screw connection, the rotating part 61 can extend into or out of the supporting part 2 along the thread direction during the rotation process, which can not only ensure the rotation to open the wedge-shaped locking part 64, but also drive the linkage part 9 to move. At the same time, it can adapt to the implementation methods of the two linkage parts 9 in the above-mentioned embodiment, with stronger adaptability and better effect of pulling the connecting part 82.

[0070] Furthermore, a driving member, such as a driving motor, may be provided at the pivot end, and the driving motor may be used to achieve an automatic opening or locking effect.

[0071] The present application also provides a switch cabinet trolley 1, referring to Figure 6 As shown, the trolley comprises a trolley frame 11 and the propulsion device in the above embodiment, so that the trolley has the functions of automatic positioning and locking when it is inserted into the switch cabinet.

[0072] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A propulsion device, mounted on a trolley frame (11), comprising a support member (2), a screw rod (3), a nut seat (4) and a pivot head (5); the pivot head (5) is mounted in the middle of the support member (2), the screw rod (3) is connected to the pivot head (5); the nut seat (4) is threadedly connected to the screw rod (3) and is externally connected to a trolley-type circuit breaker, characterized in that: The invention also comprises a support locking member (6), a bearing seat (7), a circuit breaker locking member (8) and a linkage member (9); the support locking member (6) is connected to the support member (2) and is provided with a pivot end and a clamping end; the pivot end is pivotally connected to the pivot head (5), and the pivot end slides or rotates along the pivot head (5), passes through the support member (2), is sleeved on the outside of the screw rod (3), the clamping end is connected to the pivot end, is slidably connected along the support member (2), and is clamped with the external switch cabinet; the bearing seat (7) is connected to the support member (2), and is provided with a circuit breaker locking member (8) and a linkage member (9); the support locking member (6 ... The screw rod (3) is pivotally connected to one end away from the support member (2) and is connected to the trolley frame (11); the circuit breaker locking member (8) is mounted on the bearing seat (7) and is engaged with the circuit breaker locking member (8) when the circuit breaker moves along the screw rod (3) along with the nut seat (4); one end of the linkage member (9) is connected to the circuit breaker locking member (8) and the other end is connected to the pivot end, and the pivot end causes the circuit breaker locking member (8) to be separated from the engaged state with the circuit breaker through the linkage member (9).

2. A propulsion device according to claim 1, characterized in that: The support locking member (6) comprises a rotating portion (61), a pulling portion (62), a sliding portion (63) and a wedge-shaped locking portion (64); the rotating portion (61) is pivotally connected to the pivot head (5), is sleeved on the pivot head (5), and slides along the pivot head (5), so that the rotating portion (61) penetrates the support member (2) and extends in the direction of the screw rod (3), and sleeves the screw rod (3); the pulling portion (62) is elastic, and the pulling portion (63) is elastic. The supporting member (2) is connected to the rotating member (61) at one side of the screw rod (3), and when the rotating member (61) rotates, the pulling member (62) is wrapped around the surface of the rotating member (61); the sliding member (63) is connected to the supporting member (2) at a side close to the screw rod (3) by sliding, and is connected to the pulling member (62); the wedge-shaped locking member (64) is connected to an end of the sliding member (63) away from the pulling member (62), and is clamped to an external switch cabinet.

3. A propulsion device according to claim 2, characterized in that: The sliding portion (63) is also connected to an elastic portion (65), and a limiting protrusion (21) is provided on a side of the support member (2) close to the screw rod (3). The elastic portion (65) abuts against the limiting protrusion (21) and applies an elastic force to the sliding portion (63) in the direction of the wedge-shaped locking portion (64).

4. A propulsion device according to claim 3, characterized in that: The single pulling portion (62), the sliding portion (63), the wedge-shaped locking portion (64), and the elastic portion (65) form a group, and at least two groups are provided on the support member (2).

5. A propulsion device according to any one of claims 2 to 4, characterized in that: The surface of the rotating portion (61) is provided with a winding mark (611) for the pulling portion (62) to be embedded.

6. A propulsion device according to claim 1, characterized in that: The circuit breaker locking member (8) comprises a fixing portion (81), a connecting portion (82) and a wedge-shaped snap-in portion (83); the fixing portion (81) is mounted on the bearing seat (7); the connecting portion (82) is connected to the fixing portion (81) and extends in the direction of the support member (2); the wedge-shaped snap-in portion (83) is mounted on the connecting portion (82), and the wedge-shaped surface is oriented toward the support member (2); when the trolley-type circuit breaker moves to the wedge-shaped snap-in portion (83), the wedge-shaped snap-in portion (83) is snap-fitted with the trolley-type circuit breaker; and the linkage member (9) is connected to the connecting portion (82).

7. A propulsion device according to claim 6, characterized in that: The linkage member (9) comprises an elastic pull rope (91) and a limiting portion (92); a plurality of limiting portions (92) are provided and are respectively mounted on the surface of the trolley frame (11); one end of the elastic pull rope (91) is connected to the pivot end, and the other end passes through the limiting portion (92) in turn and is connected to the connecting portion (82).

8. A propulsion device according to claim 7, characterized in that: The linkage member (9) further comprises a sleeve portion (93) and a push portion (94); the sleeve portion (93) is sleeved on the pivot end, the pivot end is provided with two raised rings (66), the sleeve portion (93) is located between the two raised rings (66), and is clamped with the pivot end through the raised rings (66); the push portion (94) is connected to the sleeve portion (93) and is slidably connected to the trolley frame (11); the elastic pull rope (91) passes through the limiting portion (92) and is connected to the push portion (94).

9. A propulsion device according to claim 7 or 8, characterized in that: The connection portion (82) and the elastic drawstring (91) are detachably connected.

10. A switch cabinet trolley (1), characterized in that: A propulsion device comprising any one of claims 1 to 9.

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