Lead chamber opening and closing device

Abstract

The invention provides a lead chamber opening and closing device, and belongs to the technical field of radioactive detection instruments. The lead chamber opening and closing device comprises a first driving mechanism and a second driving mechanism; the first driving mechanism is used for jacking a shaft body of the lead chamber, so that a lead chamber body and a lead chamber cover of the lead chamber are separated; the second driving mechanism comprises a second linear driver and a transmission mechanism, the transmission mechanism is connected with a second telescopic rod of the second linear driver and a connecting protrusion of the lead chamber cover, and the transmission mechanism can be driven by the second telescopic rod to drive the lead chamber cover to rotate around the shaft body. By the adoption of the lead chamber opening and closing device, manual operation can be replaced, and the operation efficiency is improved. In addition, the torque borne by the shaft body in the opening and closing process of the lead chamber cover can be reduced, and therefore the service life of the shaft body and the lead chamber can be prolonged.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of radioactive detection instruments, and particularly relates to a lead chamber opening and closing device. Background Art

[0002] A lead chamber is a common device used in the field of radioactive substance detection. Its core function is to absorb and block radioactive particles through high-density lead materials to ensure the safety of operators and the environment.

[0003] The lead chamber includes a lead chamber body, a lead chamber cover, and a rotating shaft. The lead chamber body is used to accommodate radioactive substances. The lead chamber cover is buckled on the opening of the lead chamber body and is rotatably connected to the lead chamber body through the rotating shaft. When detecting radioactive substances, first rotate the lead chamber cover to expose the opening, put the radioactive substances into the interior of the lead chamber body, and then rotate the lead chamber cover to close the opening.

[0004] However, currently, the rotation process of the lead chamber cover basically relies on manual operation, with low operation efficiency and being not conducive to automated detection. Summary of the Invention

[0005] The present disclosure provides a lead chamber opening and closing device, which can solve the technical problems existing in the related art. The technical solution of the lead chamber opening and closing device is as follows:

[0006] The present disclosure provides a lead chamber opening and closing device, which includes a first driving mechanism and a second driving mechanism;

[0007] The first driving mechanism is used to lift the shaft body of the lead chamber so that the lead chamber body and the lead chamber cover of the lead chamber are separated;

[0008] The second driving mechanism includes a second linear driver and a transmission mechanism. The transmission mechanism is respectively connected to the second telescopic rod of the second linear driver and the connection protrusion of the lead chamber cover. The transmission mechanism can drive the lead chamber cover to rotate around the shaft body under the drive of the second telescopic rod.

[0009] In a possible implementation manner, the transmission mechanism includes a connecting rod and a caliper;

[0010] One end of the connecting rod is rotatably connected to the second telescopic rod;

[0011] One end of the caliper is rotatably connected to the other end of the connecting rod, and the other end of the caliper is connected to the connection protrusion.

[0012] In a possible implementation manner, the caliper includes a first caliper body, a second caliper body, a fixing block, and a pin shaft;

[0013] The first clamping body and the second clamping body are arranged at intervals, and the first clamping body and the second clamping body are respectively connected to a connecting protrusion of the lead chamber cover;

[0014] The fixed block is located between the first clamping body and the second clamping body, and is respectively connected to the first clamping body and the second clamping body;

[0015] The pin shaft is respectively connected to the first clamping body and the second clamping body, and the pin shaft is rotatably connected to the other end of the connecting rod.

[0016] In a possible implementation manner, the transmission mechanism further includes a hoop, the hoop is sleeved outside the shaft body and is connected to the caliper to prevent the caliper from separating from the connecting protrusion.

[0017] In a possible implementation manner, the lead chamber opening and closing device further includes a support member, the support member is connected to the caliper and is used to limit the movement of the caliper in the vertical direction;

[0018] The other end of the caliper is slidably connected to the connecting protrusion in the axial direction of the shaft body.

[0019] In a possible implementation manner, the support member has a chute structure;

[0020] The caliper has a protrusion structure, the protrusion structure is located in the chute structure and is slidably connected to the support member.

[0021] In a possible implementation manner, the second linear driver is a linear electric cylinder.

[0022] In a possible implementation manner, the first driving mechanism includes a connecting member and a first linear driver;

[0023] The connecting member is fixed outside the pressure rod of the lead chamber;

[0024] The first telescopic rod of the first linear driver is rotatably connected to the connecting member.

[0025] In a possible implementation manner, the lead chamber opening and closing device further includes a mounting bracket, and the first linear driver is hinged to the mounting bracket.

[0026] In a possible implementation manner, the second telescopic rod is located between a first plane and a second plane, the first plane is the plane where the top wall of the lead chamber cover is located, and the second plane is the plane where the bottom wall of the lead chamber cover is located.

[0027] The technical solutions provided by the present disclosure at least include the following beneficial effects:

[0028] The present disclosure provides a lead chamber opening and closing device, which can automatically open or close the lead chamber cover, replacing manual operation, thereby improving the operation efficiency. In addition, in this lead chamber opening and closing device, the transmission mechanism is connected to the connecting protrusion of the lead chamber cover instead of the shaft body. The torque transmission does not pass through the shaft body. That is to say, the torque received by the shaft body during the opening and closing of the lead chamber cover is reduced, and the shaft body is less likely to undergo stress fatigue, thereby improving the service life of the shaft body and the lead chamber.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Brief Description of the Drawings

[0030] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. In the drawings:

[0031] Figure 1 is a schematic structural diagram of a lead chamber provided by an embodiment of the present disclosure;

[0032] Figure 2 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0033] Figure 3 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0034] Figure 4 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0035] Figure 5 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0036] Figure 6 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0037] Figure 7 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0038] Figure 8 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0039] Figure 9 is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0040] Figure 10 is a force analysis diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0041] Figure 11It is a force analysis diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure;

[0042] Figure 12 It is a schematic structural diagram of a lead chamber opening and closing device provided by an embodiment of the present disclosure.

[0043] Legend Explanation

[0044] 100. Lead chamber;

[0045] 101. Lead chamber body; 102. Shaft body; 103. Lead chamber cover; 104. Bearing platform; 105. Eccentric wheel; 106. Pressing rod;

[0046] 1011. Connecting seat; 1031. Connecting protrusion; 1032. Handle; 1041. Wheel body mounting seat; 1051. Wheel body; 1052. Rotating shaft;

[0047] 1. First driving mechanism;

[0048] 11. Connector; 12. First linear driver;

[0049] 111. Connector body; 112. Transmission rod; 121. First telescopic rod;

[0050] 1111. First connecting part; 1112. Second connecting part;

[0051] 1111a. Transmission rod connector;

[0052] 2. Second driving mechanism;

[0053] 21. Second linear driver; 22. Transmission mechanism;

[0054] 211. Second telescopic rod; 221. Connecting rod; 222. Caliper; 223. Hoop;

[0055] 2220. Protrusion structure; 2221. First clamp body; 2222. Second clamp body; 2223. Fixed block; 2224. Pin shaft;

[0056] 2220a. First part; 2220b. Second part; 22231. Arc-shaped groove;

[0057] 3. Support member;

[0058] 301. Slide groove structure;

[0059] 4. Mounting bracket.

[0060] Through the above-mentioned drawings, specific embodiments of the present disclosure have been shown, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by reference to specific embodiments. Detailed Description of the Embodiments

[0061] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the drawings.

[0062] The terms used in the embodiments of the present disclosure are only for explaining the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein should have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second", "third", and similar terms used in the specification and claims of the present patent application do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one. The terms "comprising" or "including" and similar terms mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0063] Before introducing the lead chamber opening and closing device, the structure of the lead chamber will be briefly introduced first.

[0064] Figure 1A lead chamber 100 is shown, which includes a lead chamber body 101, a shaft body 102, a lead chamber cover 103, a bearing platform 104, an eccentric wheel 105, and a pressure rod 106. Among them, the lead chamber body 101 is a hollow cylindrical structure, and the inside of the lead chamber body 101 is used to accommodate radioactive substances. Both the top and bottom of the lead chamber body 101 have openings (not shown in the figure), and the probe can extend into the inside of the lead chamber body 101 from the bottom opening. A connecting seat 1011 is provided on the outer wall of the lead chamber body 101. The connecting seat 1011 and the lead chamber body 101 are integrally formed. A receiving hole is provided on the connecting seat 1011, and this receiving hole is used to receive a part of the shaft body 102. The lead chamber cover 103 is a circular columnar structure, and the size of the lead chamber cover 103 is adapted to the size of the lead chamber body 101. There are a connecting protrusion 1031 and a handle 1032 on the outer wall of the lead chamber cover 103. The number of the connecting protrusions 1031 is two, and these two connecting protrusions 1031 are spaced apart. The shaft body 102 is located in the connecting seat 1011 and is respectively connected to the above two connecting protrusions 1031. The shaft body 102 is respectively connected to the two connecting protrusions 1031, and the shaft body 102 and the lead chamber cover 103 are integrally formed. The handle 1032 is located on the outer wall of the lead chamber cover 103 and is on the opposite side of the connecting protrusion 1031. The lead chamber body 101 is placed on the top surface of the bearing platform 104. A wheel mounting seat 1041 is provided on the top surface of the bearing platform 104. The eccentric wheel 105 is rotatably connected to the wheel mounting seat 1041 and abuts against the lower end of the shaft body 102. The pressure rod 106 is connected to the shaft body of the eccentric wheel 105. It is easy to understand that a technician can manually press down the pressure rod 106 to drive the eccentric wheel 105 to rotate, thereby jacking up the shaft body 102 to separate the lead chamber cover 103 from the lead chamber body 101. Subsequently, by pushing and pulling the handle 1032, the lead chamber cover 103 is rotated around the shaft body 102. During the rotation process, the lead chamber cover 103 covers the upper opening of the lead chamber body 101, or the lead chamber cover 103 intersects with the upper opening of the lead chamber body 101, realizing the opening or closing of the lead chamber 100. However, due to the large weight of the lead chamber cover 103, it is rather laborious for a technician to manually operate the lead chamber cover 103, resulting in low operation efficiency and being not conducive to automatic detection.

[0065] To solve the above problems, the present disclosure provides a lead chamber opening and closing device, as Figure 2 shown. This lead chamber opening and closing device includes a first driving mechanism 1 and a second driving mechanism 2.

[0066] Among them, the first driving mechanism 1 is used to lift the shaft body 102 so that the lead chamber cover 103 of the lead chamber is separated from the lead chamber body 101. Specifically, the first driving mechanism 1 is connected to the pressure lever 106. The first driving mechanism 1 can press the pressure lever 106 downward, and by driving the eccentric wheel 105 to rotate, the shaft body 102 is lifted upward. Since the shaft body 102 is integrally formed with the lead chamber cover 103, the lifting of the shaft body 102 will drive the lead chamber cover 103 to lift, so that the lead chamber cover 103 of the lead chamber is separated from the lead chamber body 101. In some other examples, the first driving mechanism 1 can also be directly connected to the shaft body 102, and the first driving mechanism 1 directly lifts the shaft body 102 to separate the lead chamber cover 103 from the lead chamber body 101.

[0067] Among them, the second driving mechanism 2 includes a second linear driver 21 and a transmission mechanism 22. The transmission mechanism 22 is respectively connected to the second telescopic rod 211 of the second linear driver 21 and the connection protrusion 1031 of the lead chamber cover 103. The transmission mechanism 22 can drive the lead chamber cover 103 to rotate around the shaft body 102 under the drive of the second telescopic rod 211. Specifically, the second linear driver 21 can be a linear electric cylinder or a linear air cylinder, including a cylinder body and a second telescopic rod 211. The second telescopic rod 211 of the second linear driver 21 can perform telescopic motion, and the telescopic direction of the second telescopic rod 211 does not point to the axis of the lead chamber cover 103. One end of the transmission mechanism 22 is rotatably connected to the second telescopic rod 211, and the other end is connected to the connection protrusion 1031. When the second telescopic rod 211 performs telescopic motion, a torque is generated, and the transmission mechanism 22 transmits this torque, thereby driving the lead chamber cover 103 to rotate around the shaft body 102.

[0068] Adopting the technical solution provided by the embodiment of the present disclosure, the lead chamber opening and closing device can automatically open or close the lead chamber cover 103, replacing manual operation, thereby improving the operation efficiency. Further, the transmission mechanism 22 is connected to the connection protrusion 1031 of the lead chamber cover 103, rather than being connected to the shaft body 102. The transmission of torque does not pass through the shaft body 102. That is to say, the torque received by the shaft body 102 during the opening and closing process of the lead chamber cover 103 is reduced, and the shaft body 102 is less likely to undergo stress fatigue, so that the service life of the shaft body 102 and the lead chamber 100 can be improved.

[0069] Exemplarily, the second linear driver 21 is a linear electric cylinder. In this way, the noise can be reduced, and the control accuracy and control stability of the device can be improved.

[0070] In some possible embodiments, the lead chamber opening and closing device further includes a mounting frame 4.

[0071] As Figure 2 shown, the mounting frame 4 is composed of multiple mounting beams, and the mounting frame 4 is used to mount the first driving mechanism 1 and the second driving mechanism 2.

[0072] In some possible embodiments, the first driving mechanism 1 includes a connecting member 11 and a first linear driver 12.

[0073] As Figure 9 shown, the eccentric wheel 105 includes a wheel body 1051 and a rotating shaft 1052. The wheel body 1051 is fixedly connected to the rotating shaft 1052, and the wheel body 1051 and the rotating shaft 1052 are eccentrically arranged. The rotating shaft 1052 is rotatably connected to a wheel mounting seat 1041 on the top surface of the load-bearing platform 104, and a part of the rotating shaft 1052 extends out of the wheel mounting seat 1041. The pressure rod 106 is fixedly connected to the extending part of the rotating shaft 1052, and the pressure rod 106 can rotate around the rotating shaft 1052 to drive the wheel body 1051 to rotate.

[0074] Further, the connecting member 11 includes a connecting member body 111 and a transmission rod 112. The connecting member body 111 is fixedly connected to the pressure rod 106. The transmission rod 112 is located on the side of the connecting member body 111 away from the lead chamber body 101 and is connected to the connecting member body 111. Specifically, the connecting member body 111 includes a first connecting portion 1111 and a second connecting portion 1112. The first connecting portion 1111 and the second connecting portion 1112 respectively have a through groove structure. The shape and size of the through groove structure are respectively adapted to the shape and size of the pressure rod 106. The first connecting portion 1111 and the second connecting portion 1112 are snap-connected outside the pressure rod 106, and the two are fixedly connected by bolts. The transmission rod 112 is located on the side of the first connecting portion 1111 away from the second connecting portion 1112 and is connected to the first connecting portion 1111. The suspended end of the first telescopic rod 121 of the first linear driver 12 has an annular structure. A spherical bearing is arranged inside the annular structure and sleeved outside the transmission rod 112. The suspended end of the first telescopic rod 121 is rotatably connected to the transmission rod 112.

[0075] In some examples, referring to Figure 9 , a transmission rod mounting structure 1111a is provided on the wall surface of the first connecting portion 1111 facing away from the second connecting portion 1112. The transmission rod mounting structure 1111a is a cylindrical structure. A part of the transmission rod 112 extends into the transmission rod mounting structure 1111a, and the transmission rod mounting structure 1111a and the transmission rod 112 are detachably connected by a pin shaft.

[0076] In implementation, the first telescopic rod 121 extends outwards, pushing the transmission rod 112 to move downwards. The transmission rod 112 drives the connecting member body 111 to move downwards along an arc trajectory. The connecting member body 111 drives the pressure rod 106 to rotate downwards, thereby driving the wheel body 1051 to rotate and realizing the jacking of the shaft body 102.

[0077] Exemplarily, the first linear driver 12 is a linear electric cylinder. In this way, the noise can be reduced, and the control accuracy and control stability of the device can be improved.

[0078] In some examples, the cylinder block of the first linear actuator 12 is hinged to the mounting bracket 4. In this way, the cylinder block of the first linear actuator 12 can rotate relative to the mounting bracket 4, and there is no need to set a connecting rod in the first driving mechanism 1, reducing the number of components to reduce costs and improving the force transmission efficiency.

[0079] In some examples, the cylinder block of the second linear actuator 21 is fixedly connected to the mounting bracket.

[0080] Exemplarily, the cylinder block of the second linear actuator 21 and the mounting bracket can be connected by bolts.

[0081] In some possible embodiments, the transmission mechanism 22 includes a plurality of transmission components.

[0082] In some examples, as Figure 2 shown, the transmission mechanism 22 includes a connecting rod 221 and a caliper 222.

[0083] Both ends of the connecting rod 221 are ring-shaped structures, and the middle part is a rod-shaped structure. A spherical plain bearing is connected inside each ring-shaped structure. Correspondingly, the suspended end of the second telescopic rod 211 has a ring-shaped structure, and a spherical plain bearing is also connected in this ring-shaped structure. The suspended end of the second telescopic rod 211 and one end of the connecting rod 221 are connected by a pin shaft, and both the suspended end of the second telescopic rod 211 and one end of the connecting rod 221 can rotate relative to the pin shaft. Equivalently, the suspended end of the second telescopic rod 211 and one end of the connecting rod 221 are rotatably connected.

[0084] Specifically, referring to Figure 6 , the second telescopic rod 211 and the connecting rod 221 are coaxially arranged. The suspended end of the second telescopic rod 211 has two coaxially arranged ring-shaped structures, one end of the connecting rod 221 is located between these two ring-shaped structures, and the connecting rod 221 and the second telescopic rod 211 are connected by a pin shaft.

[0085] Referring to Figure 1 , the connecting protrusion 1031 is a trapezoidal plate-like structure. Referring to Figure 3 , the caliper 222 has a Y-shaped plate-like structure. The shape and size of the opening of the caliper 222 are respectively adapted to the shape and size of the connecting protrusion 1031, and the open end of the caliper 222 is clamped with the connecting protrusion 1031. The non-open end of the caliper 222 is rotatably connected to the connecting rod 221 by a pin shaft.

[0086] In practice, referring to Figure 2, the second telescopic rod 211 of the second linear driver 21 extends outwards, pushing one end of the connecting rod 221 to move away from the second linear driver 21. Correspondingly, the other end of the connecting rod 221 pushes the non-opening end of the caliper 222 to move away from the second linear driver 21. The caliper 222 applies a torque to the connecting protrusion 1031. Under the action of this torque, the lead chamber cover 103 rotates around the shaft body 102.

[0087] Specifically, as Figure 3 shown, the caliper 222 includes a first caliper body 2221, a second caliper body 2222, a fixing block 2223 and a pin shaft 2224. Both the first caliper body 2221 and the second caliper body 2222 are Y-shaped plate-like structures, with the same shape and size, and the first caliper body 2221 and the second caliper body 2222 are arranged at intervals. As Figure 1 and Figure 3 shown, there are two connecting protrusions 1031 distributed at intervals along the shaft body 102 on the outer wall of the lead chamber cover 103. The first caliper body 2221 and the second caliper body 2222 are respectively connected to a connecting protrusion 1031 of the lead chamber cover 103. That is, the openings of the first caliper body 2221 and the second caliper body 2222 are respectively clamped with a connecting protrusion 1031.

[0088] In some examples, the caliper 222 is an integrally formed component.

[0089] Exemplarily, the axis of the connecting rod 221 is arranged parallel to the first caliper body 2221 and the second caliper body 2222, and the distance from the axis of the connecting rod 221 to the first caliper body 2221 and the second caliper body 2222 is equal. In this way, the stress borne by the pin shaft 2224 can be evenly distributed, improving the service life of the transmission mechanism 22.

[0090] See Figure 3 , the fixing block 2223 is located between the first caliper body 2221 and the second caliper body 2222, and is respectively connected to the first caliper body 2221 and the second caliper body 2222. The fixing block 2223 protrudes into the opening formed by the first caliper body 2221 and the second caliper body 2222. This protruding part has an arc-shaped groove 22231 for accommodating a part of the shaft body 102.

[0091] See Figure 3, the pin shaft 2224 is arranged parallel to the shaft body 102, that is, the pin shaft 2224 extends in the vertical direction. The pin shaft 2224 is respectively connected to the first jaw body 2221 and the second jaw body 2222, and the pin shaft 2224 is rotatably connected to the other end of the connecting rod 221. Specifically, a clearance area is formed among the first jaw body 2221, the second jaw body 2222 and the fixed block 2223. The first jaw body 2221 and the second jaw body 2222 have mounting holes arranged oppositely, and the mounting holes communicate with the clearance area. The pin shaft 2224 sequentially passes through the mounting hole on the first jaw body 2221, the circular ring structure at the other end of the connecting rod 221, and the mounting hole on the second jaw body 2222 to complete the assembly. The pin shaft 2224 can rotate relative to the circular ring structure at the other end of the connecting rod 221 (the clearance area provides space for the rotation of the connecting rod 221), and the pin shaft 2224 and the above two mounting holes can both be in interference fit.

[0092] Exemplarily, the first jaw body 2221, the second jaw body 2222 and the fixed block 2223 can be fixedly connected by screws.

[0093] In some examples, the transmission mechanism 22 further includes a hoop 223, and the hoop 223 is used to prevent the caliper 222 from separating from the connecting protrusion 1031.

[0094] As Figure 3 shown, two mounting holes are provided on the side wall surface of the fixed block 2223 away from the connecting rod 221, and these two mounting holes are distributed on both sides of the arc-shaped groove 22231. See Figure 4 and Figure 5 , the hoop 223 is a thin sheet structure, including a first mounting portion, a connecting portion and a second mounting portion connected in sequence. One mounting hole is respectively provided on the first mounting portion and the second mounting portion. The connecting portion is an arc-shaped structure and is respectively adapted to the shape and size of the shaft body 102.

[0095] In implementation, a part of the side wall of the shaft body 102 is accommodated in the arc-shaped groove 22231, and another part of the side wall of the shaft body 102 is accommodated in the connecting portion of the hoop 223. The hoop 223 and the fixed block 2223 are tightly connected by bolts, that is, the hoop 223 and the fixed block 2223 are connected to form an annular structure, and this annular structure is sleeved outside the shaft body 102. Due to the limiting effect of the hoop 223, the fixed block 2223 is limited in the radial direction of the shaft body 102. Correspondingly, since the first jaw body 2221 and the second jaw body 2222 are respectively fixedly connected to the fixed block 2223, the first jaw body 2221 and the second jaw body 2222 are also respectively limited in the radial direction of the shaft body 102, so that in the radial direction of the shaft body 102, the separation of the first jaw body 2221 and the second jaw body 2222 from the connecting protrusion 1031 can be avoided.

[0096] Optionally, the hoop 223 and the fixing block 2223 clamp the fixed shaft body 102 to limit the sliding of the caliper 222 in the axial direction of the shaft body 102.

[0097] Optionally, there is a clearance fit between the annular structure formed by the hoop 223 and the fixing block 2223 and the shaft body 102.

[0098] It is easy to understand that the technician can adjust the tightening degree between the annular structure formed by the hoop 223 and the fixing block 2223 and the shaft body 102 by adjusting the screwing depth of the bolt in the mounting hole of the fixing block 2223.

[0099] In some possible embodiments, the lead chamber opening and closing device further includes a support member 3, which is connected to the transmission mechanism 22 and is used to limit the movement of the transmission mechanism 22 in the vertical direction.

[0100] As Figure 6 shown, the support member 3 has a plate-like structure. The top wall of the plate-like structure extends in the horizontal direction. The bottom wall of the caliper 222 is in contact with the top wall of the support member 3, and the top wall of the support member 3 can limit the vertical downward movement of the caliper 222. Further, in the above example, there is a clearance fit between the annular structure formed by the hoop 223 and the fixing block 2223 and the shaft body 102. Accordingly, the other end of the caliper 222 is slidably connected to the connecting protrusion 1031 in the axial direction of the shaft body 102.

[0101] Adopting the technical solution provided by the embodiment of the present disclosure, referring to Figure 2 and Figure 6 , the first driving mechanism 1 jacks up the shaft body 102. Since the other end of the caliper 222 is slidably connected to the connecting protrusion 1031 in the axial direction of the shaft body 102, the caliper 222 will not be jacked up by the first driving mechanism 1, and the relative position between the caliper 222 and the connecting rod 221 will not change, so that the second driving mechanism 2 can always maintain a high transmission efficiency.

[0102] In some examples, referring to Figure 7 , the support member 3 has a chute structure 301, and the caliper 222 has a protrusion structure 2220. The protrusion structure 2220 is located in the chute structure 301 and is slidably connected to the support member 3. In this way, through the chute structure 301, the movement trajectories of the components in the first driving mechanism 1 can tend to be stable, thereby improving the accuracy of the operation.

[0103] Specifically, as Figure 6 and Figure 7 shown, the chute structure 301 is an arc-shaped groove. The axis of the arc-shaped groove is the intersection point of the axis of the shaft body 102 and the plane where the top wall of the support member 3 is located, and the radius of the arc-shaped groove is the distance between the axis of the pin shaft 2224 and the axis of the shaft body 102.

[0104] Optionally, the protruding structure 2220 may be a protruding portion of the pin 2224, such as Figure 7 As shown, the end of the pin shaft 2224 passes through the first clamp body 2221 and the second clamp body 2222 in sequence, and extends out of the wall surface of the second clamp body 2222 away from the first clamp body 2221 . The protruding portion is the protruding structure 2220 .

[0105] Exemplarily, the groove width of the slide groove structure 301 can be equal to the outer diameter of the pin shaft 2224, and the slide groove structure 301 has a first wall surface and a second wall surface relative to each other, wherein the first wall surface is a wall surface away from the shaft body 102, and the second wall surface is a wall surface close to the shaft body 102. During the sliding process of the pin shaft 2224 in the slide groove structure 301, the pin shaft 2224 can be attached to the first wall surface or the second wall surface.

[0106] In some examples, the support member 3 is also used to limit the vertical upward movement of the caliper 222 .

[0107] like Figure 8 As shown, the protruding structure 2220 includes a first portion 2220a and a second portion 2220b, wherein the first portion 2220a is located in the slide groove structure 301 of the support member 3 and is slidably connected to the support member 3, and the second portion 2220b is located outside the slide groove structure 301 and extends out of the bottom wall of the support member 3. The second portion 2220b has a columnar structure, and its outer diameter is greater than the groove width of the slide groove structure 301.

[0108] In this way, by the second portion 2220 b abutting against the support member 3 , the caliper 222 can be limited, and the caliper 222 is restricted from moving in the vertical upward direction following the shaft body 102 .

[0109] In some possible embodiments, see Figure 2 , the second telescopic rod 211 is located between the first plane and the second plane. The first plane is the plane where the top wall of the lead chamber cover 103 is located, and the second plane is the plane where the bottom wall of the lead chamber cover 103 is located. In this way, the transmission efficiency of the second driving mechanism 2 can be improved.

[0110] In some examples, in the first state, the first angle between the second telescopic rod 211 and the connecting rod 221 is within the first preset interval, and the second angle between the connecting rod 221 and the caliper 222 is within the second preset interval. In the second state, the angle between the second telescopic rod 211 and the connecting rod 221 is within the third preset interval, and the angle between the connecting rod 221 and the caliper 222 is within the fourth preset interval.

[0111] Among them, the first included angle in the above sense is the angle between the extension line of the second telescopic rod 211 and the connecting rod 221, the second included angle is the angle between the caliper 222 and the extension line of the second telescopic rod 211, the first state is the state where the second telescopic rod 211 retracts into the cylinder body to the maximum extent, and the second state is the state where the second telescopic rod 211 extends out of the cylinder body to the maximum extent. The first preset interval and the second preset interval are both [20°, 30°], the third preset interval is [10°, 20°], and the fourth preset interval is [70°, 80°].

[0112] Exemplarily, in the first state, the first included angle is 26° and the second included angle is 20°; in the second state, the first included angle is 17° and the second included angle is 78°.

[0113] Next, a simple analysis of the rated thrust required for the second linear actuator 21 is as follows:

[0114] Step 1: Open the lead chamber cover 103 manually. Refer to Figure 1 , the technician uses a dynamometer to connect to the handle 1032 of the lead chamber cover 103, and pulls the handle 1032 perpendicular to the working surface through the dynamometer to open the lead chamber cover, and records the reading of the dynamometer.

[0115] Among them, the working surface is the plane determined by the axis of the handle 1032 and the axis of the shaft body 102. The reading of the dynamometer is 45.0 N (Newton).

[0116] Step 2: Measure the first distance L from the pin shaft 2224 of the caliper 222 to the axis of the shaft body 102 1 = 196.6 mm, and the second distance L from the axis of the handle 1032 to the axis of the shaft body 102 2 = 615 mm. Reserve a safety factor of 1.5, and denote the thrust required to rotate the caliper 222 to open the lead chamber cover 103 as F 1 . Through calculation, F 1 = 211.2 N.

[0117] Step 3: Refer to Figure 2 and Figure 10 , denote the thrust provided by the connecting rod 221 as F 2 , denote the thrust provided by the second telescopic rod 211 as F 3 . According to the force analysis, it can be obtained that: F 2 = F 1 / cos70, F 3 = F 2 / cos26. Substitute the data to obtain that F 3 = 687.0 N.

[0118] Step 4: Manually close the lead chamber cover 103. Refer to Figure 1 , the technician uses a tensiometer to connect to the handle 1032 of the lead chamber cover 103, and pulls the handle 1032 perpendicular to the working surface through the tensiometer to close the lead chamber cover, and records the reading of the tensiometer. The reading of the tensiometer is 55.0 N.

[0119] Step 5: Referring to the first distance L 1 and the second distance L 2 measured above, reserve a safety factor of 1.5, and record the pulling force required to rotate the caliper 222 to close the lead chamber cover 103 as F 4 , and calculate F 4 = 258.1 N.

[0120] Step 6: Refer to Figure 2 and Figure 11 , record the pulling force provided by the connecting rod 221 as F 5 , record the pulling force provided by the second telescopic rod 211 as F 6 , according to the force analysis, it is obtained that: F 5 = F 4 / cos12, F 6 = F 5 / cos17, substituting the data, it is obtained that F 6 = 275.9 N.

[0121] Analyzing the above data, it can be seen that the maximum thrust required for the second linear actuator 21 to open the lead chamber cover 103 is 687.0 N, and the maximum pulling force required for the second linear actuator 21 to close the lead chamber cover is 275.9 N. Based on this, a linear electric cylinder with a rated thrust of 1000 N is selected, which can meet the requirements.

[0122] In the above example, refer to Figure 10 and Figure 11 , the second linear actuator 21 opens the lead chamber cover 103 by extending the second telescopic rod 211, and closes the lead chamber cover 103 by retracting the second telescopic rod 211. It is easy to understand that referring to Figure 12 , the second linear actuator 21 can also close the lead chamber cover 103 by extending the second telescopic rod 211, and open the lead chamber cover 103 by retracting the second telescopic rod 211.

[0123] The technical solution provided by the embodiments of the present disclosure at least includes the following beneficial effects:

[0124] An embodiment of the present disclosure provides a lead chamber opening and closing device. This lead chamber opening and closing device can automatically open or close the lead chamber cover 103, replacing manual operation, thereby improving the operation efficiency. In addition, in this lead chamber opening and closing device, the transmission mechanism 22 is connected to the connection protrusion 1031 of the lead chamber cover 103, rather than being connected to the shaft body 102. The transmission of torque does not pass through the shaft body 102. That is to say, the torque received by the shaft body 102 during the opening and closing of the lead chamber cover 103 is reduced, and the shaft body 102 is less likely to undergo stress fatigue, thereby being able to improve the service life of the shaft body 102 and the lead chamber 100.

[0125] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A lead chamber opening and closing device, characterized in that: The lead chamber opening and closing device comprises a first driving mechanism (1) and a second driving mechanism (2); The first driving mechanism (1) is used to lift the shaft (102) of the lead chamber (100) so as to separate the lead chamber body (101) and the lead chamber cover (103) of the lead chamber; The second driving mechanism (2) comprises a second linear drive (21) and a transmission mechanism (22); the transmission mechanism (22) is respectively connected to a second telescopic rod (211) of the second linear drive (21) and a connecting protrusion (1031) of the lead chamber cover (103); and the transmission mechanism (22) can drive the lead chamber cover (103) to rotate around the shaft (102) under the drive of the second telescopic rod (211).

2. The lead chamber opening and closing device according to claim 1, characterized in that: The transmission mechanism (22) comprises a connecting rod (221) and a caliper (222); One end of the connecting rod (221) is rotatably connected to the second telescopic rod (211); One end of the caliper (222) is rotatably connected to the other end of the connecting rod (221), and the other end of the caliper (222) is connected to the connecting protrusion (1031).

3. The lead chamber opening and closing device according to claim 2, characterized in that: The caliper (222) comprises a first caliper body (2221), a second caliper body (2222), a fixing block (2223) and a pin (2224); The first clamp body (2221) and the second clamp body (2222) are arranged at intervals, and the first clamp body (2221) and the second clamp body (2222) are respectively connected to a connecting protrusion (1031) of the lead chamber cover (103); The fixing block (2223) is located between the first clamp body (2221) and the second clamp body (2222), and is respectively connected to the first clamp body (2221) and the second clamp body (2222); The pin shaft (2224) is respectively connected to the first caliper body (2221) and the second caliper body (2222), and the pin shaft (2224) is rotationally connected to the other end of the connecting rod (221).

4. The lead chamber opening and closing device according to claim 2, characterized in that: The transmission mechanism (22) further comprises a hoop (223), wherein the hoop (223) is sleeved outside the shaft body (102) and connected to the caliper (222) to prevent the caliper (222) from being separated from the connecting protrusion (1031).

5. The lead chamber opening and closing device according to claim 2, characterized in that: The lead chamber opening and closing device further comprises a support member (3), wherein the support member (3) is connected to the caliper (222) and is used to limit the movement of the caliper (222) in the vertical direction; The other end of the caliper (222) is slidably connected to the connecting protrusion (1031) in the axial direction of the shaft body (102).

6. The lead chamber opening and closing device according to claim 5, characterized in that: The support member (3) has a slide groove structure (301); The caliper (222) has a protruding structure (2220), and the protruding structure (2220) is located in the sliding groove structure (301) and is slidably connected to the support member (3).

7. The lead chamber opening and closing device according to claim 1, characterized in that: The second linear drive (21) is a linear electric cylinder.

8. The lead chamber opening and closing device according to claim 1, characterized in that: The first driving mechanism (1) comprises a connecting member (11) and a first linear drive (12); The connecting member (11) is fixed outside the pressure rod (106) of the lead chamber (100); The first telescopic rod (121) of the first linear drive (12) is rotatably connected to the connecting member (11).

9. The lead chamber opening and closing device according to claim 8, characterized in that: The lead chamber opening and closing device also includes a mounting frame (4), and the first linear drive (12) is hingedly connected to the mounting frame (4).

10. The lead chamber opening and closing device according to any one of claims 1 to 9, characterized in that: The second telescopic rod (211) is located between a first plane and a second plane, the first plane being the plane where the top wall of the lead chamber cover (103) is located, and the second plane being the plane where the bottom wall of the lead chamber cover (103) is located.

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