Pay-off and take-up equipment

Abstract

The invention discloses wire taking and paying-off equipment, and relates to the technical field of refrigerated containers, the wire taking and paying-off equipment comprises a wire winding device and an object taking device, the wire winding device comprises a machine base, a wire winding reel, a power supply cable and a coil spring, the machine base is arranged on the refrigerated container, and the wire winding reel is rotationally arranged on the machine base; the first end of the power supply cable is arranged on the winding reel and is in electric signal connection with the refrigerated container, the other end of the power supply cable is provided with an external connector, and the coil spring is arranged on one side of the winding reel; the coil spring is used for driving the winding reel to rotate so that the power supply cable can be wound around the winding reel, the object taking device comprises a telescopic arm, a mounting rod and a sleeve rope, the mounting rod is sleeved with the telescopic arm and can stretch out of the telescopic arm, the sleeve rope is arranged on the mounting rod, and the sleeve rope is provided with a sleeve hole allowing an external connector to be inserted therein. According to the technical scheme provided by the invention, the technical problem that the operation difficulty is high when the power supply cable of the refrigerated container is taken and placed can be solved.

Description

Technical Field

[0001] This invention relates to the field of refrigerated container technology, and in particular to a pick-and-place line device. Background Technology

[0002] Refrigerated containers, commonly known as "freezers" or "frozen containers," are special containers equipped with refrigeration equipment and used to transport goods requiring temperature control. To ensure the normal operation of refrigerated containers, they typically require long power cables; however, retrieving and placing these power cables presents significant technical challenges.

[0003] Therefore, it is necessary to provide a new wire pick-and-place device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide a cable handling device that addresses the technical problem of high operational difficulty when handling power cables in refrigerated containers.

[0005] To achieve the above objectives, the present invention proposes a line-picking and placing device for use in refrigerated containers, the line-picking and placing device comprising:

[0006] A winding device includes a base, a winding drum, a power supply cable, and a coil spring. The base is mounted on a refrigerated container, and the winding drum is rotatably mounted on the base. A first end of the power supply cable is mounted on the winding drum and electrically connected to the refrigerated container. The other end of the power supply cable has an external connector. The coil spring is located on one side of the winding drum. The coil spring drives the winding drum to rotate, so that the power supply cable is wound around the winding drum.

[0007] The object retrieval device includes a telescopic arm, a mounting rod, and a sling. The mounting rod is fitted into the telescopic arm and can extend out of the telescopic arm. The sling is disposed on the mounting rod and has a hole for inserting an external connector.

[0008] In one embodiment, the winding drum is rotatably mounted on the base via a rotating shaft, and there are three coil springs, which are spaced apart along the axial direction of the rotating shaft; all three coil springs are used to drive the winding drum to rotate so that the power supply cable is wound around the winding drum.

[0009] In one embodiment, the winding device further includes a cable guide, the base is provided with a reciprocating lead screw, the cable guide includes a mounting bracket, a slider and a guide wheel, the slider is reciprocally slidably disposed on the reciprocating lead screw, the mounting bracket is disposed on the slider, the guide wheel is rotatably disposed on the mounting bracket, and the guide wheel is provided with a guide groove for accommodating at least a portion of the power supply cable.

[0010] In one embodiment, the cable guide further includes two cable guide rollers, which are spaced apart on the mounting frame along the axial direction of the guide roller. The two cable guide rollers enclose a guide space, which is correspondingly arranged with the guide groove.

[0011] In one embodiment, the reciprocating screw is rotatably mounted on the machine base, the winding drum drives the reciprocating screw to rotate via a chain, the reciprocating screw is provided with a forward spiral groove and a reverse spiral groove that are connected end to end, and the slider meshes with the reciprocating screw.

[0012] In one embodiment, the telescopic arm includes multiple telescopic components, each of which includes a rod and a locking block. All the rods are sequentially sleeved on the outside of the mounting rod, and the locking block is disposed at the end of the corresponding rod near the rope. The locking block disposed on the innermost rod is used to lock the position of the mounting rod.

[0013] In any two adjacent rods, the locking block on the outer rod is used to lock the inner rod that is adjacent to it.

[0014] In one embodiment, the lock block includes a first latch and a first locking member. The first latch is disposed on the rod body, and the first latch has two first latches spaced apart circumferentially thereon. The first locking member connects the two first latches and can drive the two first latches to move toward each other.

[0015] In one embodiment, the lock block further includes a second latch and a second locking member. The second latch covers the rod body and is integrally formed with the first latch. The second latch has two second latches spaced apart along its circumference. The second locking member can drive the two second latches to move toward each other so that the second latches grip the corresponding rod body.

[0016] In one embodiment, the winding device further includes a wire guide sleeve. The base is provided with a bracket, and the wire guide sleeve is rotatably mounted on the bracket. The outer circumferential surface of the wire guide sleeve is used to allow the power supply cable to slide when the winding drum winds and releases the power supply cable, so as to avoid damage to the power supply cable due to wear.

[0017] In one embodiment, the first end of the loop is disposed on the mounting rod, the second end of the loop is provided with a connecting block, the connecting block is provided with a through hole, the loop is passed through the through hole, and the connecting block and the loop form the loop hole.

[0018] The technical solution of this invention reduces the operational difficulty for operators when retrieving power cables from refrigerated containers by incorporating a winding device for winding and releasing power cables and a retractable retrieval device. In this embodiment, a winding drum is used to wind the power cables, allowing them to be neatly stored. A coil spring is located on one side of the winding drum and is used to drive the drum to rotate, causing the power cables to wind around it; by incorporating the coil spring, the power cables can be automatically wound onto the winding drum, reducing the operational difficulty for operators when storing the power cables. A lanyard is used to secure external connectors. By retractably mounting the installation rod to the telescopic arm, the length of the retrieval device can be extended, allowing operators to secure power cables located at higher positions using the lanyard, further reducing the operational difficulty for operators when retrieving the power cables. Specifically, when retrieving the power cable from a refrigerated container, the operator extends the telescopic arm of the mounting rod until the retrieval device reaches the required length. The operator then grasps and manipulates the telescopic arm, securing the lanyard to the external connector. The operator then gradually retracts the mounting rod, which drives the winding drum to rotate, releasing the power cable until the external connector is nearby, allowing the operator to grab the cable and complete the retrieval. When storing the power cable, the operator simply releases the cable, and the coil spring drives the winding drum to rotate in the opposite direction, winding up the cable and storing it. Using this cable retrieval device reduces operational difficulty and eliminates the need for operators to climb to heights, significantly reducing safety risks. Furthermore, the use of a winding drum for winding and releasing the cable effectively prevents the cable from rubbing against the metal storage frame, reducing the possibility of damage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the wire pick-and-place device in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the winding device in one embodiment of the present invention;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0023] Figure 4 for Figure 2Cross-sectional view;

[0024] Figure 5 A schematic diagram of the object-retrieving device in one embodiment of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of point B in the image;

[0026] Figure 7 This is a schematic diagram of the structure of the lock block in one embodiment of the present invention.

[0027] Explanation of icon numbers:

[0028] 100. Winding device; 110. Base; 111. Reciprocating lead screw; 112. Bracket; 120. Winding drum; 121. Slip ring; 130. Power supply cable; 131. External connector; 140. Coil spring; 150. Cable guide; 151. Mounting bracket; 152. Slider; 153. Guide wheel; 154. Wire guide wheel; 1541. Guide space; 160. Wire guide sleeve; 200. Lifting device; 210. Telescopic arm; 220. Mounting rod; 230. 231. Loop; 232. Connecting block; 2321. Through hole; 300. Telescopic component; 310. Rod body; 320. Locking block; 321. First lock buckle; 3211. First locking tongue; 322. First locking component; 3221. First locking rod; 3222. Toggle block; 3223. First adjusting block; 323. Second lock buckle; 3231. Second locking tongue; 324. Second locking component; 3241. Second locking rod; 3242. Second adjusting block.

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0033] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0034] Refrigerated containers, commonly known as "freezers" or "frozen containers," are special containers equipped with refrigeration equipment used for transporting goods requiring temperature control. To ensure the normal operation of refrigerated containers, they typically require long power cables. During actual production and research, researchers have found that the power cables for refrigerated containers are usually stored in metal storage frames. However, retrieving these cables requires workers to climb ladders to a higher position, then unpack and unfold the neatly stacked cables. Similarly, storing the cables requires climbing to a higher position to neatly stack them and place them in the metal storage frames. Clearly, this process is difficult and carries significant safety risks. Furthermore, the cables are highly susceptible to damage from scraping against the metal storage frames during handling.

[0035] This invention proposes a cable handling device, which aims to solve the technical problem of high operational difficulty when handling power cables in refrigerated containers.

[0036] Please see Figures 1 to 5In one embodiment of the present invention, the wire retrieval and placement device is applied to a refrigerated container. The wire retrieval and placement device includes a winding device 100 and a retrieval device 200. The winding device 100 includes a base 110, a winding drum 120, a power supply cable 130, and a coil spring 140. The base 110 is disposed on the refrigerated container, and the winding drum 120 is rotatably disposed on the base 110. The first end of the power supply cable 130 is disposed on the winding drum 120 and connected to the refrigerated container via an electrical signal, and the other end of the power supply cable 130 is disposed on... An external connector 131 is provided, and a coil spring 140 is provided on one side of the winding drum 120. The coil spring 140 is used to drive the winding drum 120 to rotate so that the power supply cable 130 is wound around the winding drum 120. The lifting device 200 includes a telescopic arm 210, a mounting rod 220 and a rope 230. The mounting rod 220 is fitted into the telescopic arm 210 and can extend out of the telescopic arm 210. The rope 230 is provided on the mounting rod 220 and has a sleeve hole 231 for the external connector 131 to be inserted.

[0037] The technical solution of this invention reduces the operational difficulty for operators when retrieving and placing the power cable 130 in a refrigerated container by providing a winding device 100 for winding and releasing the power cable 130 and a retractable retrieval device 200. In this embodiment, the winding drum 120 is used to wind the power cable 130 so that the power cable 130 can be neatly stored. A coil spring 140 is provided on one side of the winding drum 120 and is used to drive the winding drum 120 to rotate so that the power cable 130 is wound around the winding drum 120; by providing the coil spring 140, the power cable 130 can be automatically wound around the winding drum 120, reducing the operational difficulty for operators when storing the power cable 130. A loop 230 is used to fasten the external connector 131. By telescopically mounting the mounting rod 220 to the telescopic arm 210, the length of the retrieval device 200 can be extended, so that the operator can use the rope 230 to hook the power cable 130 located at a high position, which can reduce the difficulty of the operator in retrieving the power cable 130. Specifically, when retrieving the power cable from the refrigerated container, the operator can extend the installation rod 220 out of the telescopic arm 210 until the retrieval device reaches the required length. Then, the operator can grasp and manipulate the telescopic arm 210 to attach the rope 230 to the external connector 131. Subsequently, the operator gradually retracts the installation rod 220, which drives the winding drum 120 to rotate, releasing the power cable 130 until the external connector 131 is nearby, at which point the operator can grab the power cable 130, completing the retrieval of the power cable 130. When storing the power cable 130, the operator only needs to release the power cable 130, and the coil spring 140 will drive the winding drum 120 to rotate in the opposite direction to wind up the power cable 130, completing the storage of the power cable 130. The use of this cable retrieval and placement equipment by operators can reduce the difficulty of operation. At the same time, operators do not need to climb to high places, which can greatly reduce safety risks. Furthermore, the cable retrieval and placement equipment uses a winding drum 120 to wind and release the power cable 130, which can effectively prevent the power cable 130 from scratching the metal storage frame and reduce the possibility of damage to the power cable 130.

[0038] In this embodiment, to achieve electrical signal connection between the power supply cable 130 and the refrigerated container and to prevent cable tangling, a slip ring 121 can be provided in the winding drum 120. Specifically, a slip ring 121 is provided in the winding drum 120, with one end of the slip ring 121 connected to the power supply cable 130 for electrical signal connection, and the other end of the slip ring 121 connected to the refrigerated container for electrical signal connection. In this embodiment, the slip ring 121 is used to continuously and stably transmit power, electrical signals, or data signals between the rotating and stationary parts. By providing a slip ring 121 in the winding drum 120, on the one hand, the winding drum 120 can be allowed to rotate continuously to prevent cable tangling; on the other hand, a continuous power supply can be provided, and control signals, sensor data, and video signal lights can be transmitted in real time and without loss between the stationary and rotating ends.

[0039] Please see Figures 2 to 4 In one embodiment of the present invention, the winding drum 120 is rotatably mounted on the base 110 via a rotating shaft. Three coil springs 140 are spaced apart along the axis of the rotating shaft. All three coil springs 140 drive the winding drum 120 to rotate, causing the power supply cable 130 to wind around it. In this embodiment, the simultaneous rotation of the winding drum 120 by the three coil springs 140 provides sufficient driving force to rotate the winding drum 120, thereby automatically winding the power supply cable 130 around it. In a specific embodiment, the coil spring 140 can be a planar eddy current coil spring 140. In a specific embodiment of the present invention, to prevent the power supply cable 130 from automatically winding around the winding drum 120 under the action of the coil springs 140 after the operator pulls it out, a ratchet limiting mechanism can be provided to restrict the automatic retraction of the power supply cable 130. Specifically, after the operator pulls the power cable 130 to the specified length for the first time, the ratchet limit mechanism will lock to restrict the reverse rotation of the winding drum 120; when the operator pulls the power cable 130 again, the ratchet limit mechanism will unlock, at which time the coil spring 140 can drive the winding drum 120 to reverse so that the power cable 130 is automatically wound on the winding drum 120.

[0040] In one embodiment of the present invention, the winding device 100 further includes a cable guide 150. A reciprocating lead screw 111 is provided on the base 110. The cable guide 150 includes a mounting bracket 151, a slider 152, and a guide wheel 153. The slider 152 is slidably and reciprocally mounted on the reciprocating lead screw 111. The mounting bracket 151 is mounted on the slider 152. The guide wheel 153 is rotatably mounted on the mounting bracket 151 and has a guide groove for accommodating at least a portion of the power supply cable 130. By slidably and reciprocally mounting the cable guide 150 on the base 110, the power supply cable 130 can be wound more tightly and smoothly on the winding drum 120, reducing the risk of tangling or knotting of the power supply cable 130 when wound on the winding drum 120. In this embodiment, the guide wheel 153 is used to precisely guide and position the power supply cable 130, ensuring that the power supply cable 130 can be wound more tightly and smoothly on the winding drum 120, reducing the risk of tangling or knotting when the power supply cable 130 is wound on the winding drum 120. In a specific embodiment, by setting a corresponding driving mechanism (such as a drive motor and lead screw) to drive the slider 152 to slide back and forth along the reciprocating lead screw 111, the power supply cable 130 can be wound tightly and smoothly on the winding drum 120. The guide groove is used to accommodate at least part of the power supply cable 130 to precisely position the power supply cable 130 and ensure the accurate position of the power supply cable 130. In a specific embodiment, the guide groove can be an arc-shaped groove or a guide hole. To improve the stability of the slider 152 when sliding back and forth along the reciprocating lead screw 111, a guide rod passing through the slider 152 can be provided in the base 110 to provide guidance for the reciprocating sliding of the slider 152.

[0041] In one embodiment of the present invention, the cable guide 150 further includes two guide rollers 154, which are spaced apart on the mounting frame 151 along the axial direction of the guide roller 153. The two guide rollers 154 enclose a guide space 1541, which corresponds to the guide groove. In this embodiment, the guide space 1541 formed by the two guide rollers 154 is used to guide the power supply cable 130. By corresponding the guide space 1541 to the guide groove, the power supply cable 130 can be better guided into the guide groove, and the power supply cable 130 can be prevented from leaving the guide groove, ensuring the accurate position of the power supply cable 130. In addition, the power supply cable 130 can also be guided by setting a U-shaped frame or other structures with guide spaces 1541 on the winding device to ensure the accurate position of the power supply cable 130.

[0042] In one embodiment of the present invention, a reciprocating lead screw 111 is rotatably mounted on a base 110. A winding drum 120 drives the reciprocating lead screw 111 to rotate via a chain. The reciprocating lead screw 111 is provided with a forward spiral groove and a reverse spiral groove that are connected end to end. A slider 152 engages with the reciprocating lead screw 111. In this embodiment, when the reciprocating lead screw 111 rotates, the slider 152, which engages with it, slides back and forth with the guide wheel 153, thereby completing the winding and unwinding of the power supply cable 130. By setting a chain for transmission between the winding drum 120 and the reciprocating lead screw 111, the winding drum 120 can drive the reciprocating lead screw 111 to rotate, thereby driving the slider 152 to slide back and forth, which enables the rotation of the winding drum 120 and the reciprocating sliding of the slider 152 to proceed synchronously. By providing forward and reverse spiral grooves on the reciprocating lead screw 111, and driving the slider 152 to slide back and forth via the forward and reverse spiral grooves, the structure of the winding device 100 can be simplified and the manufacturing difficulty reduced.

[0043] In one embodiment of the present invention, the winding device 100 further includes a wire guide sleeve 160. A bracket 112 is provided on the base 110, and the wire guide sleeve 160 is rotatably mounted on the bracket 112. The outer circumferential surface of the wire guide sleeve 160 is used to allow the power cable 130 to slide when the winding drum 120 winds and releases the power cable 130, thereby preventing damage to the power cable 130 due to wear. The wire guide sleeve 160 is used to allow the power cable 130 to slide when the winding drum 120 winds and releases the power cable 130, which can reduce the risk of damage to the power cable 130. Specifically, since refrigerated containers are usually stacked, the power cables 130 of the refrigerated containers need to be stored at a high place. When the winding drum 120 releases or winds the power cable 130, the unwound power cable 130 and the wound power cable 130 are easily attached and relative to each other, causing wear and damage to the power cable 130. The winding device 100 reduces the risk of damage to the power supply cable 130 by using a guide sleeve 160 to change the position of the unwound power supply cable 130. In a specific embodiment, the horizontal distance between the guide sleeve 160 and the central axis of the winding drum 120 is greater than the diameter of the winding drum 120.

[0044] Please see Figures 5 to 7In one embodiment of the present invention, the telescopic arm 210 includes multiple telescopic components 300, each of which includes a rod 310 and a locking block 320. All rods 310 are sequentially sleeved on the mounting rod 220, and the locking block 320 is disposed at the end of the corresponding rod 310 near the rope 230. The locking block 320 on the innermost rod 310 is used to lock the position of the mounting rod 220. In any two adjacent rods 310, the locking block 320 on the outer rod 310 is used to lock the inner and adjacent rod 310. In this embodiment, by sequentially sleeved the rods 310 of each telescopic component 300 on the mounting rod 220, the length of the telescopic retriever can be effectively extended, allowing the operator to reach the external connector 131 at a higher position. The following explanation uses the locking between two adjacent rods 310 as an example: by locking the corresponding rod 310 with a locking block 320 located at the end of the rod 310 near the loop 230, the structural stability of the lifting device 200 when extended can be ensured. Specifically, when the operator extends each rod 310, the locking block 320 on the outer rod 310 can lock the inner and adjacent rod 310, ensuring the stability of each rod 310 after extension. When it is necessary to retract the rod 310, the operator can release the locking block 320 on the outer rod 310 to retract the inner and adjacent rod 310.

[0045] In one embodiment of the present invention, the locking block 320 includes a first latch 321 and a first locking member 322. The first latch 321 is disposed on the rod body 310, and two first latches 3211 are spaced apart along its circumference. The first locking member 322 connects the two first latches 3211 and can drive the two first latches 3211 to move towards each other. In this embodiment, the first latch 321 is an incompletely closed annular structure. When locking the rod 310, the operator only needs to adjust the first locking member 322 on the outermost and adjacent rod 310, causing the two corresponding first locking tongues 3211 to move closer to each other, thus enabling the corresponding first latch 321 to grip the rod 310 and lock it. Conversely, when releasing the rod 310, the operator only needs to adjust the first locking member 322 on the outermost and adjacent rod 310, causing the two corresponding first locking tongues 3211 to move further apart under the rebound force of the corresponding first latch 321, thus releasing the rod 310 and disengaging its position. By using the first locking member 322 on the outermost and adjacent rod 310 to drive the two corresponding first locking tongues 3211 to move closer or further apart to lock and release the rod 310, the operation process is simplified and the difficulty of operation is reduced.

[0046] In one embodiment of the present invention, the first locking member 322 includes a first locking rod 3221, a lever 3222, and a first adjusting block 3223. The first end of the first locking rod 3221 is disposed on one of the first latches 3211, and the second end of the first locking rod 3221 passes through the other first latch 3211. The lever 3222 is rotatably connected to the second end of the first locking rod 3221 and abuts against the other first latch 3211. The first adjusting block 3223 is movably disposed on the first end of the first locking rod 3221 and abuts against the corresponding first latch 3211. The first adjusting block 3223 can drive the two first latches 3211 to move towards each other. In this embodiment, the lever 3222 has a locked position and a released position; when the lever 3222 rotates from the released position to the locked position, the lever 3222 drives the two first latches 3211 to move towards each other. Specifically, when locking and unlocking the telescopic rod, the operator only needs to rotate the lever 3222 located on the outer and adjacent telescopic member 300 to switch the position of the lever 3222, which simplifies the operation process and reduces the difficulty of operation. The first adjusting block 3223 can drive the two first locking tongues 3211 to move towards each other to adjust the locking force of the first locking buckle 321. In actual use, the operator can rotate the first adjusting block 3223 according to actual needs to adjust the locking force of the locking block 320 when locking the rod body 310 located on the inner side.

[0047] In one specific embodiment, the rotation axis of the lever 3222 is perpendicular to the central axis of the first locking rod 3221, and the lever 3222 has a quasi-eccentric wheel structure; that is, the distance between the lever 3222 and the corresponding first locking tongue 3211 when the lever is in the locked position is less than the distance between the lever 3222 and the corresponding first locking tongue 3211 when the lever is in the released position. The first adjusting block 3223 is threadedly connected to the first end of the first locking rod 3221. To facilitate the operator's rotation of the lever 3222 and the first adjusting block 3223, the lever 3222 is provided with an extension plate, and the first adjusting block 3223 is provided with two first gripping plates spaced apart along its circumference.

[0048] In one embodiment of the present invention, the locking block 320 further includes a second latch 323 and a second locking member 324. The second latch 323 covers the rod body 310 and is integrally formed with the first latch 321. The second latch 323 has two second latches 3231 spaced apart along its circumference. The second locking member 324 can drive the two second latches 3231 to move towards each other, so that the second latch 323 hugs the corresponding rod body 310. In this embodiment, the second locking member 324 includes a second locking rod 3241 and a second adjusting block 3242. The second locking rod 3241 passes through the two second latches 3231 in sequence. The second adjusting block 3242 is movably disposed at one end of the second locking rod 3241 and can abut against the corresponding second latches 3231. The second adjusting block 3242 can drive the two second latches 3231 to move towards each other. Specifically, the second latch 323 and the second locking member 324 are used to lock the locking block 320 to the corresponding rod 310, so as to fix the locking block 320 to the corresponding rod 310 more stably and reliably. Specifically, the second locking member 324 includes a second locking rod 3241 and a second adjusting block 3242, wherein the second adjusting block 3242 can drive the two second locking tongues 3231 to move towards each other, so as to adjust the locking force of the second latch 323. The second grip plate provided on the second adjusting block 3242 facilitates the operator's rotation of the second adjusting block 3242. In a specific embodiment, the second adjusting block 3242 is threadedly connected to the second locking rod 3241. To facilitate the operator's rotation of the second adjusting block 3242, two second grip plates are provided at intervals along its circumference.

[0049] In one embodiment of the present invention, the first end of the loop 230 is disposed on the mounting rod 220, and the second end of the loop 230 is disposed on a connecting block 232. The connecting block 232 is provided with a through hole 2321, and the loop 230 is passed through the through hole 2321. The connecting block 232 and the loop 230 surround to form the loop hole 231. In this embodiment, by passing the loop 230 through the through hole 2321, that is, by slidably connecting the connecting block 232 to the loop 230, the possibility of the external connector 131 falling off after the loop 230 is secured to it can be reduced. Specifically, after the operator secures the loop 230 to the external connector 131, as the operator retracts the mounting rod 220, the connecting block 232 will gradually move along the loop 230 away from the mounting rod 220 to gradually tighten the external connector 131.

[0050] In one embodiment of the present invention, the connecting block 232 includes a mounting block and a fastening block. The mounting block is disposed on the loop 230, one side of the fastening block is rotatably connected to one side of the mounting block, and the other side of the fastening block is engaged with the other side of the mounting block. A first groove is provided on the fastening block, and a second groove is provided on the mounting block. The first groove and the second groove together form a through hole 2321. In this embodiment, the through hole 2321 formed by the mounting block and the fastening block can improve the assembly flexibility of the retractable object retriever. It should be noted that, during the manufacturing of this retractable object retriever, to ensure that the lanyard 230 is threaded through the through hole 2321, it needs to be threaded through the through hole 2321 before installing the lanyard 230 onto the mounting rod 220. However, this operation is easily overlooked during actual manufacturing. The retractable object retriever, by using the mounting block and the fastening block to form the through hole 2321, allows the lanyard 230 to be threaded through the through hole 2321 after it has been installed onto the mounting rod 220. This effectively reduces the number of rework operations required during the manufacturing of the retractable object retriever. In a specific embodiment, to facilitate operator confirmation that the lanyard 230 is properly secured to the external connector 131, a camera that can wirelessly connect to a display device can be installed at the end of the mounting rod 220 near the lanyard 230.

[0051] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A line-picking and placing device, applied to refrigerated containers, characterized in that, The line pick-and-place device includes: A winding device includes a base, a winding drum, a power supply cable, and a coil spring. The base is mounted on a refrigerated container, and the winding drum is rotatably mounted on the base. A first end of the power supply cable is mounted on the winding drum and electrically connected to the refrigerated container. The other end of the power supply cable has an external connector. The coil spring is located on one side of the winding drum. The coil spring drives the winding drum to rotate, so that the power supply cable is wound around the winding drum. The object retrieval device includes a telescopic arm, a mounting rod, and a sling. The mounting rod is fitted into the telescopic arm and can extend out of the telescopic arm. The sling is disposed on the mounting rod and has a hole for inserting an external connector.

2. The wire pick-and-place device as described in claim 1, characterized in that, The winding drum is rotatably mounted on the base via a rotating shaft. There are three coil springs, which are spaced apart along the axis of the rotating shaft. All three coil springs are used to drive the winding drum to rotate so that the power supply cable is wound around the winding drum.

3. The wire pick-and-place device as described in claim 1, characterized in that, The winding device further includes a cable guide, the base is provided with a reciprocating lead screw, the cable guide includes a mounting bracket, a slider and a guide wheel, the slider is reciprocally slidably disposed on the reciprocating lead screw, the mounting bracket is disposed on the slider, the guide wheel is rotatably disposed on the mounting bracket, and the guide wheel is provided with a guide groove for accommodating at least part of the power supply cable.

4. The wire pick-and-place device as described in claim 3, characterized in that, The cable guide also includes two cable guide rollers, which are spaced apart on the mounting frame along the axial direction of the guide roller. The two cable guide rollers surround a guide space, which is correspondingly arranged with the guide groove.

5. The wire pick-and-place device as described in claim 4, characterized in that, The reciprocating lead screw is rotatably mounted on the machine base. The winding drum drives the reciprocating lead screw to rotate via a chain. The reciprocating lead screw is provided with a forward spiral groove and a reverse spiral groove that are connected end to end. The slider meshes with the reciprocating lead screw.

6. The wire pick-and-place device as described in claim 1, characterized in that, The telescopic arm includes multiple telescopic components, each of which includes a rod and a locking block. All the rods are sequentially sleeved on the outside of the mounting rod, and the locking block is located at the end of the corresponding rod near the rope. The locking block located on the innermost rod is used to lock the position of the mounting rod. In any two adjacent rods, the locking block on the outer rod is used to lock the inner rod that is adjacent to it.

7. The wire pick-and-place device as described in claim 6, characterized in that, The lock block includes a first latch and a first locking member. The first latch is disposed on the rod body, and the first latch has two first latches spaced apart along its circumference. The first locking member connects the two first latches and can drive the two first latches to move toward each other.

8. The wire pick-and-place device as described in claim 7, characterized in that, The locking block also includes a second latch and a second locking member. The second latch covers the rod body and is integrally formed with the first latch. The second latch has two second latches spaced apart along its circumference. The second locking member can drive the two second latches to move toward each other so that the second latches hold the corresponding rod body.

9. The wire pick-and-place device as described in any one of claims 1 to 8, characterized in that, The winding device further includes a wire guide sleeve. The base is provided with a bracket, and the wire guide sleeve is rotatably mounted on the bracket. The outer circumferential surface of the wire guide sleeve is used to allow the power supply cable to slide when the winding drum winds and releases the power supply cable, so as to avoid damage to the power supply cable due to wear.

10. The wire pick-and-place device as described in any one of claims 1 to 8, characterized in that, The first end of the loop is provided on the mounting rod, and the second end of the loop is provided with a connecting block. The connecting block is provided with a through hole, and the loop is passed through the through hole. The connecting block and the loop together form the loop hole.

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