Upright automatic sand filling mechanism for high-voltage fuse shell

Abstract

The invention belongs to the field of high-voltage fuses, and discloses a high-voltage fuse shell vertical automatic sand filling mechanism which comprises a base disc assembly, a shell fixing unit, a sand filling via hole, a sand storage container and a sand filling valve, the base disc assembly comprises a bottom bearing base disc and a top bearing base disc, the shell fixing unit is arranged on the bottom bearing base disc and can vertically move, and the sand filling via hole is arranged on the top bearing base disc. The shell fixing unit comprises a shell positioning base, a sand filling through hole is formed in the top bearing base disc and corresponds to the shell positioning base, the sand storage container fills sand into the high-voltage fuse shell through the sand filling valve, the sand filling valve comprises a valve element pipe, a valve body sleeve and a compression spring, the valve element pipe is provided with a straight pipe part and a plug part, the straight pipe part is provided with a sand passing channel, and the plug part is provided with a sand passing hole. The sand passing channel forms a sand passing opening which is opened outwards, the sand passing opening is located beside the plug part, the valve body sleeve is arranged outside the valve element pipe in a sleeving mode, the valve nozzle is formed in the bottom of the valve body sleeve, a blocking neck opening is formed in the valve body sleeve, the straight pipe part is inserted into the blocking neck opening, and the blocking neck opening is sealed through the plug part.

Description

Technical Field

[0001] The invention belongs to the field of high-voltage fuses, and in particular relates to an upright automatic sand-filling mechanism for a high-voltage fuse shell. Background Art

[0002] In the high-voltage electrical industry, the sand filling process of high-voltage fuses mostly relies on traditional manual operation, that is, by properly knocking on multiple points on the side of the high-voltage fuse shell, the sand is compacted and uniformed. This method is not only inefficient, but also difficult to ensure uniformity and density during the sand filling process due to manual operation, which often results in the density failing to meet the preset standards.

[0003] At present, some automatic sand filling mechanisms have appeared on the market. They tilt the high-voltage fuse housing (length greater than 1 meter) and in this state, use a vibration device to continuously vibrate and compact the sand filled into the high-voltage fuse housing.

[0004] However, in the specific sand filling practice of the above-mentioned mechanism, the staff found that continuous vibration could not ensure good compactness of the sand particles in the high-voltage fuse housing, and could not meet the higher application indicators of the high-voltage fuse. As a result, the service life of the high-voltage fuse filled with sand using an automatic sand filling mechanism was not as good as that of the high-voltage fuse filled with sand manually. Summary of the invention

[0005] In view of the shortcomings of the prior art, the inventors have conducted in-depth research and found that after the placed high-voltage fuse is filled with sand, the sand at different heights has different potential energies, resulting in different vibration amplitudes and frequencies required for compaction with the sand as a whole, especially for longer high-voltage fuses. Continuous vibration is applied to the sand as a whole, that is, the sand with different potential energies is given the same vibration amplitude and frequency, which leads to the mismatch between the sand at certain potential energy positions and the vibration amplitude and frequency, resulting in the corresponding sand not being able to be well compacted with the sand as a whole. Therefore, the use of multi-height, multi-position and multi-point knocking similar to manual knocking can well achieve the knocking of sand at different potential energy positions with matching vibration amplitude and frequency, so that the sand in the high-voltage fuse shell has good density. However, the existing inclined high-voltage fuses are difficult to cooperate well with this multi-height, multi-position multi-point knocking method. The present invention provides an upright automatic sand filling mechanism for the high-voltage fuse shell, which realizes multi-height, multi-position and multi-point knocking of the high-voltage fuse shell by upright positioning and automatically completing the sand filling of the high-voltage fuse shell.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] 1. A vertical automatic sand filling mechanism for a high-voltage fuse shell, characterized in that it comprises: a base plate assembly, comprising a corresponding and horizontally arranged bottom bearing base plate and a top bearing base plate, a plurality of shell fixing units, which are evenly distributed and arranged on the bottom bearing base plate along the circumference of the bottom bearing base plate, the shell fixing units can move vertically, and comprise a shell positioning base, the high-voltage fuse shell is vertically arranged on the shell positioning base and the upper end of the high-voltage fuse shell is open, a plurality of sand filling through holes, which are evenly distributed and formed on the top bearing base plate along the circumference of the top bearing base plate and vertically correspond to the plurality of shell positioning bases, a sand storage container and a plurality of sand filling valves which are interconnected and are all located above the top bearing base plate, the sand filling valve has a valve nozzle which is vertically downward and corresponds to the sand filling through holes, the sand storage container fills sand into the high-voltage fuse shell via the valve nozzle through the sand filling valve, wherein the sand filling valve comprises a valve core tube, a valve body sleeve and a compression spring, the valve core tube has a straight pipe portion and a plug portion which are continuous up and down in the vertical direction, the straight pipe portion The invention discloses a sand-passing channel, which forms a sand-passing port open to the outside. The sand-passing port is located near the plugging portion, and the sand-passing port is connected to the sand storage container through the sand-passing channel. The horizontal cross-sectional area of ​​the plugging portion is larger than the horizontal cross-sectional area of ​​the straight pipe portion. The valve body sleeve is sleeved on the outside of the valve core tube, and the valve mouth is formed at the bottom of the valve body sleeve. The inside of the valve body sleeve is sequentially formed with abutting step surfaces, guide channels and plugging inner flanges from top to bottom. The abutting step surfaces are horizontal, the guide channels are vertical, and the valve core tube cooperates with the valve body sleeve. It is inserted in the guide channel, and the sealing inner flange forms a sealing neck. The straight pipe part is inserted in the sealing neck. The upper surface of the plugging part seals the sealing neck. The two ends of the compression spring respectively abut against the bottom surface of the top bearing base plate and the abutting step surface. When the valve body sleeve is vertically moved upward by external force, the sealing inner flange moves away from the plugging part, so that the sand passing mouth is opened to the outside through the valve mouth; when the external force is removed, the compression spring causes the sealing inner flange to move toward the plugging part, so that the plugging part seals the sealing neck.

[0008] Preferably, the valve body sleeve comprises an upper sleeve and a lower sleeve threadedly connected in a vertical direction, the threaded end surface of the lower sleeve forms an abutting step surface relative to the inner wall of the upper sleeve, and the guide channel and the sealing inner flange are both formed in the lower sleeve.

[0009] Preferably, the present invention also includes a driving rodless cylinder, which is arranged on the bottom bearing base and has a movable slider that can move vertically, a shell base, which is coupled with the movable slider and arranged horizontally, and a shell positioning base coupled with the shell base in the vertical direction.

[0010] Furthermore, the shell fixing unit also includes a self-fixing axis tooling, which includes a clamping hinge rod and a linkage hinge rod. One end of the clamping hinge rod is hinged on the shell base, and the two ends of the linkage hinge rod are respectively hinged at the middle part of the clamping hinge rod and the bottom of the shell positioning base. The high-voltage fuse shell is vertically set on the shell positioning base through external force, and the shell positioning base is close to the shell base. The other end of the clamping hinge rod vertically clamps the high-voltage fuse shell.

[0011] Furthermore, the shell fixing unit also includes an end matching pad detachably embedded in the upper part of the shell positioning base, and the upper surface of the end matching pad has a shell embedding blind hole of a predetermined diameter, and the shell embedding blind hole is used to fit the end of the high-voltage fuse shell.

[0012] Furthermore, the housing positioning base and the housing base are coupled via a linear bearing that is movable in a vertical direction, and the housing positioning base is elastically arranged on the housing base via a return spring, and the return spring is sleeved on the outside of the linear bearing.

[0013] Furthermore, the present invention also includes a plurality of valve mounting frames, which are evenly distributed on the upper end surface of the top bearing base along the circumference of the top bearing base, and a plurality of sand filling valves are correspondingly arranged on the plurality of valve mounting frames. An inductive metal sheet is attached to the outer surface of the valve body sleeve, and an inductive proximity switch connected to the signal of the driving rodless cylinder is arranged on the valve mounting frame. When the valve body sleeve moves upward to a predetermined position and the inductive proximity switch corresponds to the inductive metal sheet, the driving rodless cylinder stops moving.

[0014] Furthermore, the present invention also includes a driving motor, which is arranged on a movable slider and has a vertical output shaft. The shell base is coaxially arranged on the output shaft. The valve mounting frame has a horizontal plug plate. The valve core tube is fixedly plugged on the plug plate. The valve body sleeve is suspended on the valve core tube through a plug. The top of the valve body sleeve has a vertical pin slot. The plug plate is inserted with a vertical rotation limiting pin, and the rotation limiting pin is inserted into the pin slot so that the valve body sleeve cannot rotate relative to the plug plate.

[0015] Furthermore, the present invention also includes an adaptable sleeve, a valve body connecting convex hole and a leakage-proof sand skirt are formed at the upper end, a shell connecting hole is formed at the lower end, the valve body connecting convex hole is connected with the valve mouth, the upper end of the high-voltage fuse shell is connected with the shell connecting hole, the leakage-proof sand skirt extends vertically and surrounds the valve body connecting convex hole and continuously closes it, a leakage cavity is formed between the solid outer surface of the valve body connecting convex hole and the inner surface of the leakage sand skirt, and a connecting channel that connects the valve body connecting convex hole and the shell connecting hole is formed inside the adaptable sleeve.

[0016] Furthermore, the sand filling valve also has a connecting ring and a thrust bearing, the upper end of the connecting ring is sleeved on the valve mouth, and the lower end is sleeved on the valve body connecting convex hole, the thrust bearing is located inside the connecting ring, and the valve body connecting convex hole is connected and coupled with the valve mouth through the thrust bearing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The vertical automatic sand filling mechanism of the high-voltage fuse shell of the present invention comprises a base plate assembly, a plurality of shell fixing units, a plurality of sand filling holes, and a sand storage container and a plurality of sand filling valves that are interconnected. The base plate assembly comprises a bottom bearing base plate and a top bearing base plate. The shell fixing unit is arranged on the bottom bearing base plate and can move vertically. The shell fixing unit comprises a shell positioning base. The sand filling hole is formed on the top bearing base plate and vertically corresponds to the shell positioning base. The sand storage container fills sand into the high-voltage fuse shell through the sand filling valve through the valve mouth. The sand filling valve comprises a valve core tube, a valve body sleeve and a compression spring. The valve core tube has a straight tube portion and a plug portion. The straight tube portion has a sand passing channel. The sand passing channel forms a sand passing port that is open outward. The sand passing port is located near the plug portion. The valve body sleeve is sleeved on The valve mouth is formed at the bottom of the valve body sleeve on the outside of the valve core tube, the internal sealing neck of the valve body sleeve, the straight pipe part is inserted in the sealing neck, and the plugging part seals the sealing neck, that is, only when the valve body sleeve moves relative to the valve core tube and the plugging part no longer seals the sealing neck, the sand filling valve can realize sand filling into the high-voltage fuse shell. Otherwise, the sealing neck is closed and the sand filling valve cannot fill sand into the high-voltage fuse shell. Therefore, it is only necessary to vertically set the high-voltage fuse shell and lift the valve body sleeve to a predetermined height to control the progress or stop of sand filling, thereby avoiding sand leakage to the outside due to the start of sand filling at an inappropriate time during the upright process. Therefore, the present invention realizes a multi-point knocking method of multi-height and multi-position of the high-voltage fuse shell by upright positioning and automatic completion of sand filling of the high-voltage fuse shell.

[0019] 2. Because the valve body sleeve of the present invention includes an upper sleeve and a lower sleeve that are threadedly connected in the vertical direction, the threaded end face of the lower sleeve forms an abutting step surface relative to the inner wall of the upper sleeve, and the guide channel and the sealing inner flange are both formed in the lower sleeve. Therefore, the valve body sleeve of the present invention can be cast and assembled in two parts separately. Therefore, although there are more detailed structures inside the valve body sleeve, it is easier to cast, and can be easily installed when it is installed on the corresponding fixed structure.

[0020] 3. Because the shell fixing unit of the present invention also includes a self-determining axis tooling, the self-determining axis tooling includes a clamping hinge rod and a linkage hinge rod, one end of the clamping hinge rod is hinged on the shell base, and the two ends of the linkage hinge rod are respectively hinged and arranged in the middle of the clamping hinge rod and the bottom of the shell positioning base, and the high-voltage fuse shell is vertically set on the shell positioning base through external force, and the shell positioning base is close to the shell base, and the other end of the clamping hinge rod vertically clamps the high-voltage fuse shell and vertically sets the high-voltage fuse shell on the shell positioning base. When the high-voltage fuse shell is pressed down by external force, the shell positioning base elastically approaches the shell rotating base, and the self-determining axis tooling is driven by linkage, so that the other end of the clamping hinge rod vertically clamps the high-voltage fuse shell. At this time, the open top of the high-voltage fuse shell is coupled and connected with the valve mouth. Therefore, the present invention can clamp the high-voltage fuse shell and vertically position it through the self-determining axis tooling.

[0021] 4. Because the shell fixing unit of the present invention also includes an end matching pad that is detachably embedded in the upper part of the shell positioning base, the upper surface of the end matching pad has a shell embedding blind hole of a predetermined diameter, and the shell embedding blind hole is used to fit the end of the high-voltage fuse shell. Therefore, the present invention can be suitable for positioning high-voltage fuse shells of various diameter specifications by selecting a variety of shell embedding blind holes with different end matching pads.

[0022] 5. Because the shell positioning base and the shell base of the present invention are coupled by a linear bearing that is movable in the vertical direction, and the shell positioning base is set on the shell base by a return spring ejection, and the return spring is sleeved on the outside of the linear bearing, therefore, the present invention can elastically set the shell positioning base relative to the shell base, so that the high-voltage fuse shell set on the shell positioning base can always be tightly pressed against the valve nozzle and coupled and connected.

[0023] 6. Because the present invention also includes multiple valve mounting frames, which are evenly distributed on the upper end surface of the top bearing base along the circumference of the top bearing base, multiple sand filling valves are correspondingly arranged on the multiple valve mounting frames, the outer surface of the valve body sleeve is affixed with a sensing metal sheet, and the valve mounting frame is provided with an inductive proximity switch connected to the signal of the driving rodless cylinder. When the valve body sleeve moves upward to a predetermined position and the inductive proximity switch corresponds to the sensing metal sheet, the driving rodless cylinder stops moving. Therefore, the present invention is realized by the inductive proximity switch, and the high-voltage fuse shell lifts the valve body sleeve to a predetermined height to control the sand filling, otherwise the sand filling stops.

[0024] 7. Because the present invention also includes a driving motor, which is arranged on a movable slider and has a vertical output shaft, a shell base is coaxially arranged on the output shaft, a horizontal plug plate is provided on the valve mounting frame, a valve core tube is fixedly inserted on the plug plate, a valve body sleeve is suspended on the valve core tube through a plug, a vertical pin slot is provided on the top of the valve body sleeve, a vertical rotation limiting pin is inserted on the plug plate, and the rotation limiting pin is inserted into the pin slot, so that the valve body sleeve cannot rotate relative to the plug plate, therefore, the present invention can realize convenient rotation at the same potential energy position of the high-voltage fuse shell and multi-point knocking by rotating the high-voltage fuse shell on the shell base, and the valve body sleeve will not be driven to rotate.

[0025] 8. Because the present invention also includes a conversion sleeve, a valve body connecting convex hole and a leakage-proof sand skirt are formed at the upper end, a shell connecting hole is formed at the lower end, the valve body connecting convex hole is connected with the valve mouth, the upper end of the high-voltage fuse shell is connected with the shell connecting hole, the leakage-proof sand skirt extends vertically and surrounds the valve body connecting convex hole and continuously closes it, a leakage cavity is formed between the solid outer surface of the valve body connecting convex hole and the inner surface of the leakage sand skirt, and a connecting channel that connects the valve body connecting convex hole and the shell connecting hole is formed inside the conversion sleeve. Therefore, the present invention receives the sand occasionally leaked from the valve mouth through the leakage cavity, thereby further preventing the leakage of sand to the outside during the sand filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of an upright automatic sand filling mechanism for a high-voltage fuse housing according to an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a valve mounting frame and a sand filling valve according to an embodiment of the present invention;

[0028] Figure 3 An exploded view of a sand filling valve according to an embodiment of the present invention;

[0029] Figure 4 A cross-sectional view of a sand filling valve according to an embodiment of the present invention;

[0030] Figure 5 A cross-sectional view of a transfer sleeve according to an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of a driving motor, a housing base plate and a housing fixing unit according to an embodiment of the present invention;

[0032] In the figure: 100, upright automatic sand filling mechanism of high-voltage fuse housing, F, high-voltage fuse housing, 10, base plate assembly, 11, bottom bearing base plate, 12, top bearing base plate, 13, middle bearing base plate, 20, valve mounting frame, 21, vertical plate, 211, inductive proximity switch, 22, plugging plate, 221, rotation limiting pin, C, sand storage container, 30, sand filling valve, 31, valve core tube, 311, straight tube part, 311a, sand passing channel, 311b, sand passing port, 312, plugging part, 32, upper sleeve, 32a, inductive metal sheet, 32b, pin slot, 33, lower sleeve, 33a, abutting step surface, 33b, guide channel, 33c, rough Most part, 33d, sealing inner flange, 33e, valve mouth, 33f, guide cylinder section, 34, compression spring, 35, connecting ring, 36, thrust bearing, 40, rotating sleeve, 40a, valve body connecting convex hole, 40b, anti-leakage sand skirt, 40c, leakage chamber, 40d, shell connecting hole, 40e, connecting channel, 50, driving rodless cylinder, 51, moving slider, S, motor bracket, D, driving motor, P, shell base, 60, shell fixing unit, 61, shell positioning base, 62, linear bearing, 63, guide slide support, 64, reset spring, 65, self-fixing axis tooling, 651, clamping hinge rod, 652, linkage hinge rod, 66, end matching pad. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and drawings specifically illustrate the upright automatic sand filling mechanism of the high-voltage fuse housing of the present invention. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0034] like Figure 1 As shown, the upright automatic sand filling mechanism 100 of the high-voltage fuse shell in this embodiment includes a base plate assembly 10, a valve mounting frame 20, a sand filling valve 30, a sand storage container C, a conversion sleeve 40, a driving rodless cylinder 50 and a shell fixing unit 60. Specifically, the valve mounting frame 20, the sand filling valve 30, the conversion sleeve 40, the driving rodless cylinder 50 and the shell fixing unit 60 are all multiple in number and correspond to each other in the vertical direction.

[0035] The base plate assembly 10 includes a bottom supporting base plate 11 and a top supporting base plate 12 which are correspondingly and horizontally arranged. The circumferential edge of the top supporting base plate 12 is evenly formed with a plurality of sand-filling holes (not shown in the drawings) along the circumference. Specifically, the top supporting base plate 12 is disc-shaped, and the bottom supporting base plate 11 and the top supporting base plate 12 are coaxially arranged on a rotating axis.

[0036] Specifically, the base assembly 10 also includes a middle supporting base 13 located between the bottom supporting base 11 and the top supporting base 12. The bottom supporting base 11 and the middle supporting base 13 are used to fix and drive the rodless cylinder 50, and the bottom supporting base 11, the top supporting base 12 and the middle supporting base 13 are arranged in parallel and coaxially.

[0037] The valve mounting frame 20 is used to vertically set the sand filling valve 30 above the top bearing base plate 12. Multiple valve mounting frames 20 are evenly distributed on the upper end surface of the top bearing base plate 12 along the circumference of the top bearing base plate 12 and are correspondingly located near the sand filling through holes.

[0038] like Figure 2 As shown, the valve mounting frame 20 has a vertical plate 21 and a horizontal plug-in plate 22. Specifically, the plug-in plate 22 is fixed on the top of the vertical plate 21, so that the valve mounting frame 20 is in an inverted "L" shape.

[0039] An inductive proximity switch 211 is horizontally inserted at a predetermined height position of the vertical plate 21 , and the inductive proximity switch 211 is signal-connected to the driving rodless cylinder 50 . A vertical pin hole (not shown in the drawings) is formed on the fixing plate 22 .

[0040] The sand storage container C and the sand filling valve 30 are both located above the top bearing base plate 12 . The sand filling valve 30 is correspondingly vertically inserted on the insertion plate 22 , and its upper end is open and communicated with the sand storage container C.

[0041] like Figure 3 and Figure 4 As shown, the sand filling valve 30 includes a valve core tube 31 , a valve body sleeve, a compression spring 34 , a connecting ring 35 and a thrust bearing 36 .

[0042] The valve core tube 31 is fixedly inserted on the plug plate 22, and the top end of the valve core tube 31 passes through the plug plate 22 and is connected to the sand storage container C through a pipeline (not shown in the drawings). Specifically, the upper end of the valve core tube 31 is locked on the plug plate 22 by a nut washer, and the sand storage container C contains sand to be poured into the high-voltage fuse housing F, which is input to the valve core tube 31 through a pipeline.

[0043] The valve core tube 31 has a straight tube portion 311 and a plugging portion 312 which are continuous in the vertical direction. The straight tube portion 311 has a sand passing channel 311a, and the sand passing channel 311a forms a sand passing opening 311b which is open outward, and the sand passing opening 311b is located near the plugging portion 312, so that the sand passing opening 311b is connected to the sand storage container C through the sand passing channel 311a, and the horizontal cross-sectional area of ​​the plugging portion 312 is larger than that of the straight tube portion 311. Specifically, the straight tube portion 311 is in the shape of a vertical hollow tube, and the plugging portion 312 is in the shape of a truncated cone coaxial with the straight tube portion 311, and the bottom surface of the plugging portion 312 is at the bottom, so that the plugging portion 312 forms a flange at the bottom end of the straight tube portion 311.

[0044] The valve body sleeve is sleeved on the outside of the valve core tube 31 , and the valve body sleeve is suspended on the valve core tube 31 through the plugging portion 312 . The valve body sleeve includes an upper sleeve 32 and a lower sleeve 33 which are threadedly connected in the vertical direction.

[0045] The surface of the upper sleeve 32 has an inductive metal sheet 32a and a pin slot 32b.

[0046] The sensing metal sheet 32a is attached to the outer peripheral surface of the upper sleeve 32. When the valve body sleeve moves upward to a predetermined position, the sensing metal sheet 32a corresponds to the inductive proximity switch 211, and the inductive proximity switch 211 generates a trigger signal to drive the rodless cylinder 50 to stop moving.

[0047] The pin slot 32 b is vertical and formed at the top of the upper sleeve 32 , and the rotation limiting pin 221 is inserted into the pin hole of the insertion plate 22 and the pin slot 32 b at the same time, thereby limiting the rotational freedom of the valve body sleeve relative to the insertion plate 22 in the horizontal plane.

[0048] The upper end of the lower sleeve 33 is located inside the upper sleeve 32 and is threadedly connected. The end surface corresponding to the external thread of the lower sleeve 33 forms a horizontal abutting step surface 33 a relative to the inner wall of the upper sleeve 32 .

[0049] The lower sleeve 33 is formed with a guide channel 33b, a thick portion 33c, a blocking inner flange 33d and a valve mouth 33e which are sequentially arranged from top to bottom.

[0050] The guide channel 33b extends vertically and the straight tube portion 311 is inserted in the guide channel 33b. The thick portion 33c is a portion with a larger cross-section on the lower sleeve 33. The inner sealing flange 33d is formed on the inner wall corresponding to the thick portion 33c to form a sealing neck. The straight tube portion 311 is inserted in the sealing neck. The upper surface of the plugging portion 312 closes the sealing neck, so that the valve body sleeve is suspended on the valve core tube 31. In this embodiment, the inner sealing flange 33d has a flange end face extending in the vertical direction. When the upper surface of the plugging portion 312 closes the sealing neck, the flange end face closes the sand opening 311b.

[0051] The valve mouth 33e is vertically downward and corresponds to the sand filling hole. The sand storage container C fills sand into the high-voltage fuse housing F through the sand filling valve 30 via the valve mouth 33e. In this embodiment, the lower sleeve 33 includes a guide cylinder section 33f and a valve mouth 33e that are sequentially threaded in the vertical direction. The valve mouth 33e is located inside the guide cylinder section 33f, and the upper end of the valve mouth 33e is thicker, thereby forming a sealing inner flange 33d.

[0052] The two ends of the compression spring 34 respectively abut against the bottom surface of the top bearing base 12 and the abutment step surface 33a. When the valve body sleeve is moved vertically upward by external force, the inner sealing flange 33d moves away from the plugging head 312. When the sand passing port 311b is opened to the outside through the valve mouth 33e, the sensing metal sheet 32a just corresponds to the inductive proximity switch 211. When the external force is removed, the compression spring 34 causes the inner sealing flange 33d to move toward the plugging head 312, so that the plugging head 312 closes the sealing neck, and the sensing metal sheet 32a no longer corresponds to the inductive proximity switch 211.

[0053] The upper and lower ends of the connecting ring 35 are open, and the upper end is sleeved on the valve nozzle 33 e. The thrust bearing 36 is located inside the connecting ring 35, and the lower end of the connecting ring 35 is coupled to the rotating sleeve 40 through the thrust bearing 36.

[0054] like Figure 5 As shown, the upper end of the adapter sleeve 40 is formed with a valve body connecting convex hole 40a and a leakage-proof sand skirt 40b, and the lower end is formed with a shell connecting hole 40d. The valve body connecting convex hole 40a is connected to the valve mouth 33e through the thrust bearing 36, and the upper end of the high-voltage fuse shell F is connected to the shell connecting hole 40d, and the interior of the adapter sleeve 40 is formed with a connecting channel 40e that connects the valve body connecting convex hole 40a and the shell connecting hole 40d.

[0055] The anti-leakage sand skirt 40b extends vertically and surrounds the valve body connecting convex hole 40a and is continuously closed. A leakage cavity 40c is formed between the solid outer surface of the valve body connecting convex hole 40a and the inner surface of the leakage sand skirt 40b. When sand leakage occurs in the connecting ring 35, the sand falls into the interior of the leakage cavity 40c. Specifically, the valve body connecting convex hole 40a corresponds to the sand filling hole passing through the top bearing base 12, and the anti-leakage sand skirt 40b is located below the top bearing base 12.

[0056] The driving rodless cylinder 50 is arranged on the bottom bearing base 11, and has a vertically movable moving slider 51. The high-voltage fuse housing F is coupled to the moving slider 51 through a housing fixing unit 60. Specifically, the bottom of the driving rodless cylinder 50 is fixed on the bottom bearing base 11, and the top is fixed on the middle bearing base 13. When sand filling is performed, the moving slider 51 drives the high-voltage fuse housing F to move upward, and the valve body sleeve is lifted upward through the adapter sleeve 40. When the sensing metal sheet 32a of the valve body sleeve corresponds to the inductive proximity switch 211, the moving slider 51 stops moving, and at the same time, the sand storage container C starts to fill sand into the high-voltage fuse housing through the sand filling valve 30, and after the sand filling continues for a corresponding predetermined time, the moving slider 51 is driven to descend, thereby driving the high-voltage fuse housing F to move downward, so that the sensing metal sheet 32a no longer corresponds to the inductive proximity switch 211.

[0057] like Figure 6 As shown, the driving motor D is arranged on the moving slider 51, and has a vertically upward output shaft (not shown in the drawings), and the output shaft is coaxially arranged with a horizontal shell base P. The driving motor D is arranged on the moving slider 51 through a motor bracket S. Specifically, when the moving slider 51 stops rising, the driving motor D starts to rotate. After the driving motor D rotates for a corresponding predetermined period of time, the moving slider 51 descends. In this embodiment, the shell base P is coupled to the output shaft of the driving motor D through a driving thrust bearing.

[0058] The housing fixing units 60 are evenly distributed on the bottom supporting base 11 along the circumference of the bottom supporting base 11 . The housing fixing units 60 are disposed on the output shaft of the driving motor D so as to be vertically movable.

[0059] The housing fixing unit 60 includes a housing positioning base 61 , a linear bearing 62 , a guide support 63 , a return spring 64 , a self-fixing axis tool 65 and an end matching pad 66 .

[0060] The shell positioning base 61 is coupled with the shell base P in the vertical direction, and the shell positioning base 61 vertically corresponds to the sand-filled through-hole. The high-voltage fuse shell F is vertically arranged on the shell positioning base 61 and the upper end of the high-voltage fuse shell F is open. Specifically, the shell positioning base 61 is located above the shell base P.

[0061] The shell positioning base 61 and the shell base P are coupled by a linear bearing 62 which is movable in the vertical direction, and the shell positioning base 61 is elastically set on the shell base P by a return spring 64, and the return spring 64 is sleeved on the outside of the linear bearing 62. Specifically, the lower end of the shell positioning base 61 has a vertical guide sliding pillar 63 which is inserted and fitted in the linear bearing 62, and the return spring 64 is sleeved outside the guide sliding pillar 63. When the shell positioning base 61 and the shell base P are close to each other, the return spring 64 is compressed to store energy; when the shell positioning base 61 and the shell base P are far away from each other, the energy stored return spring 64 is restored.

[0062] The self-fixing axis tooling 65 includes a clamping hinge rod 651 and a linkage hinge rod 652. One end of the clamping hinge rod 651 is hinged to the upper end surface of the shell base P, and the two ends of the linkage hinge rod 652 are respectively hinged to the middle part of the clamping hinge rod 651 and the bottom of the shell positioning base 61. The other end of the clamping hinge rod 652 is a free end.

[0063] The end matching pad 66 is detachably embedded in the upper end face of the shell positioning base 61. The upper surface of the end matching pad 66 has a shell embedding blind hole of a predetermined diameter (not shown in the drawings). The shell embedding blind hole is used to fit the end of the high-voltage fuse shell F. Specifically, the end matching pad 66 has a variety of different specifications to adapt to high-voltage fuse shells F of different diameters.

[0064] The high-voltage fuse housing F is inserted into the housing embedding blind hole, and then the housing positioning base 61 is moved closer to the housing base plate P by external force, and the free end of the clamping hinge rod 652 clamps the high-voltage fuse housing F vertically in place.

[0065] The above-mentioned implementation modes are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. An upright automatic sand filling mechanism for a high voltage fuse housing, characterized in that: include: The base plate assembly includes a bottom supporting base plate and a top supporting base plate which are both arranged horizontally and correspondingly. A plurality of housing fixing units are evenly distributed on the bottom bearing base along the circumference of the bottom bearing base, the housing fixing units are vertically movable and include a housing positioning base, a high-voltage fuse housing is vertically arranged on the housing positioning base and the upper end of the high-voltage fuse housing is open, A plurality of sand-filled through holes are evenly distributed along the circumference of the top bearing base plate and formed on the top bearing base plate, and vertically correspond to the plurality of the housing positioning bases. The sand storage container and a plurality of sand filling valves are interconnected and are all located above the top bearing base plate. The sand filling valve has a valve nozzle that is vertically downward and corresponds to the sand filling through hole. The sand storage container fills sand into the high-voltage fuse housing through the sand filling valve and the valve nozzle. The sand filling valve comprises a valve core tube, a valve body sleeve and a compression spring. The valve core tube comprises a straight tube portion and a plug portion which are continuous in the vertical direction, the straight tube portion comprises a sand passage, the sand passage forms a sand passage opening which is open to the outside, the sand passage opening is located near the plug portion, and the sand passage opening is connected with the sand storage container through the sand passage, and the horizontal cross-sectional area of ​​the plug portion is larger than the horizontal cross-sectional area of ​​the straight tube portion. The valve body sleeve is sleeved on the outside of the valve core tube, the valve mouth is formed at the bottom of the valve body sleeve, and the inside of the valve body sleeve is sequentially formed with abutment step surface, guide channel and plugging inner flange from top to bottom, the abutment step surface is horizontal, the guide channel is vertical and the valve core tube is inserted in the guide channel, the plugging inner flange forms a plugging neck, the straight tube part is inserted in the plugging neck, and the upper surface of the plugging part seals the plugging neck. The two ends of the compression spring respectively abut against the bottom surface of the top bearing base and the abutting step surface. When the valve body sleeve is moved vertically upward by external force, the inner sealing flange moves away from the plugging head, so that the sand passing port is opened to the outside through the valve mouth; when the external force is removed, the compression spring causes the inner sealing flange to move toward the plugging head, so that the plugging head closes the sealing neck.

2. The automatic sand filling mechanism for the high-voltage fuse housing according to claim 1 is characterized in that: in, The valve body sleeve comprises an upper sleeve and a lower sleeve which are threadedly connected in a vertical direction, and the threaded end surface of the lower sleeve forms the abutting step surface relative to the inner wall of the upper sleeve. The guide channel and the blocking inner flange are both formed in the lower sleeve.

3. The automatic sand filling mechanism for the high-voltage fuse housing according to claim 1, characterized in that: Also includes: The driving rodless cylinder is arranged on the bottom bearing base plate and has a movable slider which can move vertically. The shell base is coupled with the movable slider and arranged horizontally, and the shell positioning base is coupled with the shell base along the vertical direction.

4. The automatic sand filling mechanism for the high-voltage fuse housing according to claim 3 is characterized in that: in, The housing fixing unit also includes a self-fixing shaft tooling, The self-fixing axis tooling comprises a clamping hinge rod and a linkage hinge rod, one end of the clamping hinge rod is hinged on the shell base, and the two ends of the linkage hinge rod are respectively hingedly arranged at the middle part of the clamping hinge rod and the bottom of the shell positioning base. The high-voltage fuse housing is vertically arranged on the housing positioning base by applying external force, the housing positioning base is close to the housing base plate, and the other end of the clamping hinge rod vertically clamps the high-voltage fuse housing.

5. The automatic vertical sand filling mechanism for high voltage fuse housing according to claim 3 is characterized in that: in, The housing fixing unit further comprises an end matching pad detachably embedded in the upper part of the housing positioning base. The upper surface of the end matching pad is provided with a shell embedding blind hole with a predetermined diameter, and the shell embedding blind hole is used for matching and inserting the end of the high-voltage fuse shell.

6. The automatic sand filling mechanism for the high-voltage fuse housing according to claim 3 is characterized in that: in, The housing positioning base and the housing base are coupled via a linear bearing that is movable in a vertical direction, and the housing positioning base is elastically arranged on the housing base via a return spring, and the return spring is sleeved on the outside of the linear bearing.

7. The automatic vertical sand filling mechanism for high voltage fuse housing according to claim 3, characterized in that: Also includes: A plurality of valve mounting frames are evenly distributed on the upper end surface of the top bearing base plate along the circumference of the top bearing base plate, and the plurality of sand filling valves are correspondingly arranged on the plurality of valve mounting frames. An inductive metal sheet is attached to the outer surface of the valve body sleeve, and an inductive proximity switch connected to the signal of the driving rodless cylinder is arranged on the valve mounting frame. When the valve body sleeve moves upward to a predetermined position and the inductive proximity switch corresponds to the inductive metal sheet, the driving rodless cylinder stops moving.

8. The automatic sand filling mechanism for the high-voltage fuse housing according to claim 8, characterized in that: Also includes: The driving motor is arranged on the moving slider and has a vertical output shaft, and the housing base is coaxially arranged on the output shaft. The valve mounting frame is provided with a horizontal plugging plate, the valve core tube is fixedly plugged on the plugging plate, and the valve body sleeve is suspended on the valve core tube through the plugging portion. The top of the valve body sleeve is provided with a vertical pin slot, the plug plate is provided with a vertical rotation limiting pin, and the rotation limiting pin is inserted into the pin slot, so that the valve body sleeve cannot rotate relative to the plug plate.

9. The automatic vertical sand filling mechanism for high voltage fuse housing according to claim 8, characterized in that: Also includes: The rotating sleeve has a valve body connecting convex hole and a leakage-proof sand skirt formed on the upper end, and a shell connecting hole formed on the lower end. The valve body connecting convex hole is communicated with the valve nozzle, and the upper end of the high-voltage fuse shell is communicated with the shell connecting hole. The anti-leakage sand skirt extends vertically and surrounds the valve body connecting convex hole to continuously close it, a leakage cavity is formed between the solid outer surface of the valve body connecting convex hole and the inner surface of the leakage-releasing sand skirt, and a connecting channel that connects the valve body connecting convex hole and the shell connecting hole is formed inside the adapter sleeve.

10. The automatic sand filling mechanism for the high voltage fuse housing according to claim 9, characterized in that: in, The sand filling valve is also connected with the collar and the thrust bearing. The upper end of the connecting ring is sleeved on the valve mouth, and the lower end is sleeved on the valve body connecting convex hole. The thrust bearing is located inside the connecting ring, and the valve body connecting convex hole is connected and coupled with the valve mouth through the thrust bearing.

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