A self-locking structure for a medium-voltage line load acquisition terminal

Abstract

The present invention discloses a self-locking structure for a medium-voltage line load acquisition terminal, comprising: a terminal body, a self-locking mechanism. An installation groove is provided near the caliper on the terminal body. A first clamping member and a part of the cable clamping mechanism are located in the installation groove. The self-locking mechanism is slidably arranged in the installation groove. The self-locking mechanism has a second clamping member, and the second clamping member can be clamped with the first clamping member; a first spring, one end of the first spring is fixedly connected to the second clamping member, and the other end is connected to the self-locking mechanism. The first spring has an elastic tendency to clamp the second clamping member with the first clamping member; by adding a self-locking mechanism to the original terminal device, under normal conditions, the second clamping member of the self-locking mechanism is firmly clamped with the first clamping member, and the caliper is restricted from opening. On the one hand, it can improve the clamping tightness between the caliper and the cable, avoid the equipment from falling off and injuring pedestrians or workers, and on the other hand, it can also prevent the terminal device from being easily removed, resulting in the loss of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of line acquisition terminal devices, and more particularly to a self-locking structure for a medium-voltage line load acquisition terminal. Background Art

[0002] The line load acquisition terminal is used to collect the current data of the cable and can remotely transmit the collected data to achieve power monitoring and analysis. The existing acquisition terminals have the following problems:

[0003] 1. The structure is relatively simple. A simple clamping structure is used between the terminal and the cable. On the one hand, in bad weather, the cable shakes greatly under the influence of external forces, and the terminal device is easy to separate from the cable. After separation, it is easy to fall and injure pedestrians or workers. On the other hand, it is also easy to be stolen, causing property losses.

[0004] 2. After the terminal is used, it needs to be recycled. The existing recycling equipment needs to distinguish the front and back of the terminal when recycling the terminal. When the front of the recycling equipment is docked with the terminal, it can be successfully docked and recycled. When the recycling equipment is docked with the terminal in the reverse direction, it cannot be docked with the terminal; however, when the terminal is used, it is clamped with the cable, and the height is generally more than 8 meters. It is difficult for the operator on the ground to distinguish the front and back of the terminal.

[0005] In view of this, how to provide a terminal device that can partially or completely solve the above technical problems is an urgent need for those skilled in the art. Summary of the Invention

[0006] The present invention aims to solve at least one of the above technical problems in the prior art to a certain extent.

[0007] To this end, an object of the present invention is to provide a self-locking structure for a medium-voltage line load acquisition terminal, including:

[0008] A terminal body, on which a cable clamping mechanism is provided. The cable clamping mechanism has a caliper, the caliper is hinged to the cable clamping mechanism, and a first clamping member is provided at the bottom of the caliper;

[0009] A self-locking mechanism. An installation groove is provided on the terminal body near the caliper. The left and right ends of the installation groove extend to the outside of the terminal body respectively; the first clamping member and part of the cable clamping mechanism are located in the installation groove, the self-locking mechanism is slidably arranged in the installation groove, the self-locking mechanism has a second clamping member, and the second clamping member can be clamped with the first clamping member;

[0010] A first spring, one end of the first spring is fixedly connected to the second clamping member, and the other end is connected to the self-locking mechanism. The first spring has an elastic tendency to clamp the second clamping member with the first clamping member.

[0011] In the above technical solution, the cable clamping mechanism is used to be clamped with the cable, and the caliper is a specific clamping mechanism.

[0012] The beneficial effects of the present invention are as follows:

[0013] By adding a self-locking mechanism to the original terminal device, under normal conditions, the second clamping member of the self-locking mechanism is firmly clamped with the first clamping member, and the caliper is restricted from opening. On the one hand, it can improve the clamping tightness between the caliper and the cable, avoid the device from falling off and injuring pedestrians or staff, and on the other hand, it can also prevent the terminal device from being easily removed and causing the loss of the device.

[0014] Furthermore, it further includes a positioning pin, the positioning pin is arranged on the cable clamping mechanism, and the other end of the first spring is sleeved on the positioning pin.

[0015] The first spring is always in a compressed state, so the first spring and the cable clamping mechanism can adopt an abutting connection method, and there is no need to additionally fix the other end of the first spring. Of course, during specific use, a cover plate should be arranged outside the installation groove to avoid rain erosion and also avoid the dislocation and falling off of the self-locking mechanism.

[0016] Furthermore, there are two groups of self-locking mechanisms, the first clamping member is clamped with the second clamping members of the two groups of self-locking mechanisms at the same time, and the tails of the two groups of self-locking mechanisms are respectively arranged close to the left and right ends of the installation groove.

[0017] One group of self-locking mechanisms can achieve the self-locking function of the caliper. The purpose of setting two groups is to improve the stability of self-locking. The two groups of self-locking mechanisms need to be unlocked simultaneously to separate the first clamping member from the second clamping member.

[0018] Furthermore, it further includes a recycling mechanism, and the recycling mechanism includes:

[0019] A housing, the housing is a cylindrical structure with an open top, and the inner surface of the housing is adapted to the outer side surface of the terminal body; the lower surface of the housing can be detachably connected to the extension rod;

[0020] An unlocking mechanism, the unlocking mechanism corresponds to the position of the self-locking mechanism, the unlocking mechanism is arranged outside the housing, the unlocking mechanism is elastically provided with an unlocking rod, the unlocking rod penetrates through the housing and extends into the housing, the unlocking rod has an elastic tendency to extend into the housing, and one end of the unlocking rod extending into the housing has an inclined surface, and the inclined surface forms an acute angle with the lower surface of the unlocking rod.

[0021] In the above technical solution, the recycling mechanism is used in cooperation with the self-locking mechanism. During use, the housing can be sleeved outside the terminal device from bottom to top. The unlocking rod retracts from the housing under the pressure of the terminal device, and the housing continues to move upward. When it moves to the position where the unlocking rod corresponds to the self-locking mechanism, the external pressure on the unlocking rod disappears, and it automatically springs into the housing to push the self-locking mechanism. The first clamping member is separated from the second clamping member, and the caliper can rotate upward to separate from the cable it clamps; at the same time, the unlocking rod is snapped into the installation groove, and the specially designed inclined surface of the unlocking rod can ensure the tight connection between the unlocking rod and the installation groove, that is, the connection between the recycling mechanism and the terminal device is realized. After the caliper is separated from the cable, the device can be recycled.

[0022] Further, a mounting groove is formed by the front surface of the terminal body being recessed from the outside to the inside. There are two sets of unlocking mechanisms. When the housing is docked with the front surface of the terminal body, one set of unlocking mechanisms can be inserted into the mounting groove and push the self-locking mechanism to separate the first clamping member from the second clamping member; when the housing is docked with the back surface of the terminal body, the other set of unlocking mechanisms can be inserted into the mounting groove and push the self-locking mechanism to separate the first clamping member from the second clamping member.

[0023] Affected by the internal modules of the terminal body, the mounting groove cannot be set in the middle position of the terminal body, so it can only be set on the front surface of the body. In this way, when the recycling device is docked with the terminal device, it is still necessary to confirm the front and back of the terminal device. To solve this problem, we set two sets of unlocking mechanisms on the housing. In this way, no matter whether it is docked with the front surface or the back surface of the terminal device, it can be ensured that one set of unlocking mechanisms can be successfully docked with the self-locking mechanism.

[0024] Further, the unlocking mechanism includes:

[0025] A travel block, the travel block is fixedly arranged outside the housing, a travel track is arranged inside the travel block, a first travel hole is penetrated through the housing, and the travel track corresponds to and communicates with the first travel hole;

[0026] A connecting rod, the connecting rod is arranged in the travel track, the outer diameter of the connecting rod is smaller than the outer diameter of the unlocking rod, a second spring is sleeved outside the connecting rod, a second travel hole is opened on one side of the travel block away from the housing, the second travel hole is adapted to the shape of the connecting rod, one end of the connecting rod is fixedly connected to the unlocking rod, and the other end extends out from the second travel hole and is connected with a limiting member. The second spring has an elastic tendency to push the unlocking rod into the housing.

[0027] In the above technical solution, the second spring is in close contact with the travel block around the second travel hole, and the second spring is always in a compressed state, which can push the unlocking rod into the housing.

[0028] Further, a limiting rod is horizontally arranged at the lower end of the limiting member. An upper limiting groove and a lower limiting groove are formed on one side of the stroke block away from the housing. The upper limiting groove is located above the second stroke hole, and the lower limiting groove is located below the second stroke hole. The connecting rod and the unlocking rod can rotate within the stroke track. When the unlocking rod is inserted into the housing, the limiting rod is completely inserted into the lower limiting groove. When the limiting member rotates 180° in the vertical direction, the limiting rod rotates to correspond to the upper limiting groove, and the limiting rod can be partially inserted into the upper limiting groove. At this time, the unlocking rod withdraws from the housing.

[0029] In the above technical solution, the function of the limiting rod is to facilitate the separation of the recycling mechanism from the terminal device. Since the recycling mechanism and the terminal device are tightly clamped after the unlocking rod is clamped into the installation groove, if you want to take out the terminal device from the recycling mechanism, you need to make the unlocking rod withdraw from the housing and take out the terminal device upward at the same time. The above solution can keep the unlocking rod in the state of extending into the housing or withdrawing from the housing through the limiting rod and the upper and lower limiting grooves, which is more convenient in terms of separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0031] Figure 1 Schematic diagram of the structure of the terminal device (the first spring is not shown);

[0032] Figure 2 Schematic diagram of the structure of the self-locking mechanism;

[0033] Figure 3 For Figure 1 Enlarged schematic diagram at position A in

[0034] Figure 4 Schematic diagram of the structure of the recycling mechanism (the unlocking rod extends into the housing state);

[0035] Figure 5 Schematic diagram of the structure of the recycling mechanism (the unlocking rod withdraws from the housing state);

[0036] Figure 6 Exploded structure schematic diagram of the unlocking mechanism;

[0037] Figure 7 Connection structure schematic diagram of the limiting member and the unlocking rod;

[0038] Figure 8It is a schematic structural diagram after the caliper is opened;

[0039] Among them, 1 - terminal body, 101 - installation groove, 2 - cable clamping mechanism, 201 - clamping plate, 3 - caliper, 4 - first clamping part, 5 - self-locking mechanism, 6 - second clamping part, 7 - positioning pin, 8 - housing, 801 - first stroke hole, 9 - unlocking rod, 901 - inclined surface, 10 - stroke block, 1001 - stroke track, 1002 - second stroke hole, 11 - connecting rod, 12 - second spring, 13 - limiting part, 14 - limiting rod, 15 - upper limiting groove, 16 - lower limiting groove. Specific embodiments

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0043] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0045] As Figures 1-3 shown, an embodiment of the present invention discloses a self-locking structure for a medium-voltage line load acquisition terminal, including: a terminal body 1, on which a cable clamping mechanism 2 is provided, the cable clamping mechanism 2 having a caliper 3, the caliper 3 being hinged to the cable clamping mechanism 2, and a first clamping member 4 being provided at the bottom of the caliper 3; a self-locking mechanism 5, an installation groove 101 being opened in the terminal body 1 near the caliper 3, the left and right ends of the installation groove 101 respectively extending outside the terminal body 1; the first clamping member 4 and a part of the cable clamping mechanism 2 being located in the installation groove 101, the self-locking mechanism 5 being slidably disposed in the installation groove 101, the self-locking mechanism 5 having a second clamping member 6, the second clamping member 6 being capable of clamping with the first clamping member 4; a first spring, one end of the first spring being fixedly connected to the second clamping member 6, and the other end being connected to the self-locking mechanism 5, the first spring having an elastic tendency to clamp the second clamping member 6 with the first clamping member 4.

[0046] As Figure 3 shown, in this embodiment, a positioning pin 7 is further included, the positioning pin 7 being provided on the cable clamping mechanism 2, and the other end of the first spring being sleeved on the positioning pin 7.

[0047] In this embodiment, the same positioning pin is also provided on the second clamping member 6, and its function is the same as that of the positioning pin 7 on the cable clamping mechanism 2.

[0048] In this embodiment, there are two groups of self-locking mechanisms 5, the first clamping member 4 being clamped with the second clamping members 6 of the two groups of self-locking mechanisms 5 simultaneously, and the tails of the two groups of self-locking mechanisms 5 being respectively disposed near the left and right ends of the installation groove 101. The first clamping member 4 has a certain length in the front-rear direction, the second clamping member 6 of one group of self-locking mechanisms 5 being clamped with the front half of the first clamping member 4, and the second clamping member 6 of the other group of self-locking mechanisms 5 being clamped with the rear half of the first clamping member 4. The two groups of self-locking mechanisms 5 are also arranged in the front-rear direction in the installation groove 101, and the overall length of the self-locking mechanism 5 is smaller than the overall length of the installation groove 101. Therefore, the tail of the self-locking mechanism 5 can be appropriately enlarged in size.

[0049] As Figures 4-7As shown in the figure, a recycling mechanism is further included in this embodiment. The recycling mechanism includes: a housing 8, which is a cylindrical structure with an open top. The inner surface of the housing 8 is adapted to the outer side surface of the terminal body 1; the lower surface of the housing 8 can be detachably connected to the extension rod; an unlocking mechanism, which corresponds to the position of the self-locking mechanism 5. The unlocking mechanism is arranged outside the housing 8. An unlocking rod 9 is elastically arranged on the unlocking mechanism. The unlocking rod 9 penetrates through the housing 8 and extends into the housing 8. The unlocking rod 9 has an elastic tendency to extend into the housing 8. One end of the unlocking rod 9 extending into the housing 8 has an inclined surface 901, and the inclined surface 901 forms an acute angle with the lower surface of the unlocking rod 9.

[0050] In this embodiment, an installation groove 101 is formed by recessing the front surface of the terminal body 1 from the outside to the inside. There are two groups of unlocking mechanisms. When the housing 8 is docked with the front surface of the terminal body 1, one group of unlocking mechanisms can be inserted into the installation groove 101 and push the self-locking mechanism 5 to separate the first engaging member 4 from the second engaging member 6; when the housing 8 is docked with the back surface of the terminal body 1, the other group of unlocking mechanisms can be inserted into the installation groove 101 and push the self-locking mechanism 5 to separate the first engaging member 4 from the second engaging member 6. Each group of unlocking mechanisms is symmetrically arranged on both sides of the housing 8.

[0051] In this embodiment, the unlocking mechanism includes: a travel block 10, which is fixedly arranged outside the housing 8. A travel track 1001 is arranged inside the travel block 10. The housing 8 is provided with a first travel hole 801. The travel track 1001 corresponds to and communicates with the first travel hole 801; a connecting rod 11, which is arranged in the travel track 1001. The outer diameter of the connecting rod 11 is smaller than the outer diameter of the unlocking rod 9. A second spring 12 is sleeved outside the connecting rod 11. A second travel hole 1002 is formed on the side of the travel block 10 away from the housing 8. The second travel hole 1002 is adapted to the shape of the connecting rod 11. One end of the connecting rod 11 is fixedly connected to the unlocking rod 9, and the other end extends out from the second travel hole 1002 and is connected with a limiting member 13. The second spring 12 has an elastic tendency to push the unlocking rod 9 into the housing 8.

[0052] In this embodiment, a limiting rod 14 is horizontally arranged at the lower end of the limiting member 13. An upper limiting groove 15 and a lower limiting groove 16 are formed on the side of the travel block 10 away from the housing 8. The upper limiting groove 15 is located above the second travel hole 1002, and the lower limiting groove 16 is located below the second travel hole 1002; the connecting rod 11 and the unlocking rod 9 can rotate in the travel track 1001. When the unlocking rod 9 is inserted into the housing 8, the limiting rod 14 is completely inserted into the lower limiting groove 16. When the limiting member 13 rotates 180° in the vertical direction, the limiting rod 14 rotates to correspond to the upper limiting groove 15, and the limiting rod 14 can be partially inserted into the upper limiting groove 15. At this time, the unlocking rod 9 withdraws from the housing 8.

[0053] The clamping principle of the cable and the caliper 3 is as follows:

[0054] As Figure 1 shown, a clamping plate 201 is hinged above a caliper 3 in a cable clamping mechanism 2. When the terminal device is actually used, the cable is clamped between the clamping plate 201 and the caliper 3. The inner surface of the caliper 3 is provided with anti-slip lines to prevent the cable from slipping and falling off.

[0055] The working principle of the self-locking mechanism 5 is as follows:

[0056] As Figures 1-3 shown, after the cable is clamped with the caliper 3, the caliper 3 is in the Figure 1 position shown. At this time, the two second engaging members 6 are tightly engaged with the first engaging member 4 under the elastic force of the first spring. As Figure 2 shown, after the first engaging member 4 is engaged with the second engaging member 6, a part of the second engaging member 6 is located above the first engaging member 4. Therefore, pulling the caliper 3 upward manually cannot separate the first engaging member 4 from the second engaging member 6, that is, the self-locking function is realized.

[0057] The process of the recycling mechanism for recycling the terminal device is as follows:

[0058] As Figure 4 shown, the limiting rod 14 is adjusted to the position of the lower limiting groove 16. Affected by the elastic force of the second spring 12, the unlocking rod 9 automatically enters the housing 8, and the limiting rod 14 automatically enters the lower limiting groove 16. The lower part of the housing 8 is connected to the extension rod, and the operator sends the recycling mechanism to the terminal device through the extension rod.

[0059] During docking, only the upper opening of the housing 8 needs to be aligned with the position of the terminal body 1, and then the housing 8 is moved upward continuously. During the movement, the unlocking rod 9 first contacts the outer surface of the housing 8. Since the unlocking rod 9 has an inclined surface 901, affected by the pressure of the housing 8, the unlocking rod 9 temporarily retracts into the travel track 1001. The housing 8 continues to move upward. When the unlocking rod 9 is aligned with the installation groove 101, the unlocking rod 9 loses pressure, and the second spring 12 pushes the unlocking rod 9 into the installation groove 101. After the unlocking rod 9 enters the installation groove 101, it automatically engages with the installation groove 101. At this time, the recycling mechanism is engaged with the terminal device. At the same time, the same group of unlocking rods 9 push the two self-locking mechanisms 5 inward from the left and right ends of the housing 8 at the same time, and the two second engaging members 6 are separated from the first engaging member 4. At this time, the caliper 3 is no longer restricted by the first engaging member 4 (the above is the process of the front face docking of the housing 8 and the terminal body 1. If it is the reverse side, another group of unlocking rods 9 engage with the installation groove 101).

[0060] The operator pulls the housing 8 downward through the extension rod. The housing 8 drives the terminal body 1 to move downward. The cable moves upward relative to the housing 8, disengages from between the caliper 3 and the clamping plate 201, and continues to move upward. When the cable contacts the upper part of the caliper 3, the cable can apply an upward pulling force to the caliper 3, forcing the caliper 3 to rotate upward and to the right. During the rotation process, a gradually increasing gap is formed between the caliper 3 and the cable locking mechanism. When the width of the gap is greater than the outer diameter of the cable, the cable is completely separated from the caliper 3 (as Figure 8 shown). The operator can recover the extension rod, the recovery mechanism, and the terminal device together (the caliper 3 always presses against the clamping plate 201 throughout the process).

[0061] The process of separating the recovery mechanism from the terminal device is as follows:

[0062] Pull the limiting member 13 outward to separate the limiting rod 14 from the lower limiting groove 16. After longitudinally rotating 180°, insert the limiting rod 14 into the upper limiting groove 15. After insertion, as Figure 5 shown. It should be noted that Figure 5 a small part of the unlocking rod 9 is still located inside the housing 8, but the position of the housing 8 corresponding to the unlocking rod 9 extends slightly outward. Therefore, the unlocking rod 9 does not affect the separation of the terminal device from the housing 8.

[0063] The present invention provides a self-locking structure for a medium-voltage line load acquisition terminal. A self-locking mechanism is added to the original terminal device. Under normal conditions, the second clamping member of the self-locking mechanism firmly clamps with the first clamping member, and the caliper is restricted from opening. On the one hand, it can improve the clamping tightness between the caliper and the cable, avoid the equipment from falling off and injuring pedestrians or staff, and on the other hand, it can also prevent the terminal device from being easily removed and causing the loss of the equipment. At the same time, the present application also provides a recovery mechanism for use in conjunction with the self-locking device. The operator can recover the device without distinguishing the front and back of the terminal device, with convenient operation and easy use, and has good application prospects.

[0064] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A self-locking structure for a medium-voltage line load acquisition terminal, characterized in that, Comprising: A terminal body, on which a cable clamping mechanism is provided. The cable clamping mechanism has calipers, the calipers are hinged to the cable clamping mechanism, and a first clamping member is provided at the bottom of the calipers; A self-locking mechanism. An installation groove is provided on the terminal body near the calipers. The left and right ends of the installation groove extend outside the terminal body respectively. The first clamping member and part of the cable clamping mechanism are located in the installation groove. The self-locking mechanism is slidably arranged in the installation groove. The self-locking mechanism has a second clamping member, and the second clamping member can be clamped with the first clamping member; A first spring, one end of the first spring is fixedly connected to the second clamping member, and the other end is connected to the self-locking mechanism. The first spring has an elastic tendency to clamp the second clamping member with the first clamping member; There are two groups of the self-locking mechanisms. The first clamping member is clamped with the second clamping members of the two groups of self-locking mechanisms at the same time. The tails of the two groups of self-locking mechanisms are respectively arranged near the left and right ends of the installation groove; It further includes a recycling mechanism. The recycling mechanism includes: a housing, the housing is a cylindrical structure with an open top, and the inner surface of the housing is adapted to the outer side surface of the terminal body; the lower surface of the housing can be detachably connected to an extension rod; An unlocking mechanism, the unlocking mechanism corresponds to the position of the self-locking mechanism, the unlocking mechanism is arranged outside the housing, the unlocking mechanism is elastically provided with an unlocking rod, the unlocking rod penetrates through the housing and extends into the housing, the unlocking rod has an elastic tendency to extend into the housing, and one end of the unlocking rod extending into the housing has an inclined surface, and the inclined surface forms an acute angle with the lower surface of the unlocking rod; An installation groove is recessed from the outside to the inside on the front surface of the terminal body. There are two groups of the unlocking mechanisms. When the housing is docked with the front surface of the terminal body, one group of unlocking mechanisms can be inserted into the installation groove and push the self-locking mechanism to separate the first clamping member from the second clamping member; when the housing is docked with the back surface of the terminal body, the other group of unlocking mechanisms can be inserted into the installation groove and push the self-locking mechanism to separate the first clamping member from the second clamping member. It further includes a positioning pin, the positioning pin is arranged on the cable clamping mechanism, and the other end of the first spring is sleeved on the positioning pin.

2. The self-locking structure of a medium-voltage line load acquisition terminal according to claim 1, wherein The unlocking mechanism includes:

3. The self-locking structure of a medium-voltage line load acquisition terminal according to claim 1, characterized in that, A travel block, the travel block is fixedly arranged outside the housing, a travel track is arranged in the travel block, a first travel hole is penetrated through the housing, and the travel track corresponds to and communicates with the first travel hole; A connecting rod, the connecting rod is arranged in the travel track, the outer diameter of the connecting rod is smaller than the outer diameter of the unlocking rod, a second spring is sleeved outside the connecting rod, a second travel hole is opened on the side of the travel block away from the housing, the second travel hole is adapted to the shape of the connecting rod, one end of the connecting rod is fixedly connected to the unlocking rod, and the other end extends out from the second travel hole and is connected with a limiting member. The second spring has an elastic tendency to push the unlocking rod into the housing. ​ 4. A self-locking structure for a medium-voltage line load acquisition terminal according to claim 3, characterized in that, A limiting rod is horizontally arranged at the lower end of the limiting member. An upper limiting groove and a lower limiting groove are formed on one side of the travel block away from the housing. The upper limiting groove is located above the second travel hole, and the lower limiting groove is located below the second travel hole. The connecting rod and the unlocking rod can rotate within the travel track. When the unlocking rod is inserted into the housing, the limiting rod is fully inserted into the lower limiting groove. When the limiting member rotates 180° in the vertical direction, the limiting rod rotates to correspond to the upper limiting groove, and the limiting rod can be partially inserted into the upper limiting groove. At this time, the unlocking rod withdraws from the housing.

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