CN219739310U - Contact finger type copper-aluminum bar clamping device - Google Patents

Abstract

The utility model discloses a contact finger type copper-aluminum bar clamping device which comprises two clamping plates which can be relatively far away or close to each other, wherein conductive copper plates are arranged on the inner side surfaces of the two clamping plates, elastic pads are arranged between the conductive copper plates and the clamping plates, and the conductive copper plates are divided into a plurality of copper sheets which are arranged in parallel. Through set up the elastic pad between electrically conductive copper and grip block, divide into a plurality of parallel arrangement's copper sheet with electrically conductive copper simultaneously, when the circumstances of deviation appears in the copper aluminium bar mounted position facing, or copper aluminium bar surface appears bending deformation, every copper sheet can make adaptive buffering adjustment according to its coverage area's copper aluminium bar surface condition, ensures whole electrically conductive copper and copper aluminium bar surface and pastes tightly, closely like a plurality of fingers to ensure stable good electrically conductive effect.

Description

Contact finger type copper-aluminum bar clamping device

Technical Field

The utility model relates to the technical field of connecting devices of graphitizing furnaces, in particular to a contact finger type copper-aluminum bar clamping device.

Background

The graphitization furnace is a device for converting carbon materials into graphite by utilizing high temperature, and is widely applied to the occasion of producing battery cathode materials on a large scale. When the graphitizing furnace works, the graphite electrode at the tail of the furnace head needs to be connected with the copper-aluminum bars outside the furnace to form a loop, and high temperature is generated after the graphitizing furnace is electrified so as to finish graphitizing.

The copper-aluminum bars are arranged outside the furnace, and the copper-aluminum bars are clamped by a clamp to realize electric connection, and at the moment, the clamp is in surface contact with the copper-aluminum bars. In actual production, the mounting position of the copper-aluminum bar cannot be absolutely accurate, and the perpendicular bisector of the section of the copper-aluminum bar deviates more or less from the vertical direction; meanwhile, as the copper-aluminum bar is used for a long time, bending deformation can occur, so that gaps exist between the copper-aluminum bar and the clamp, the copper-aluminum bar and the clamp cannot be tightly adhered to each other, the conductive effect is poor, and the final production quality of the graphitizing furnace is further affected.

In view of this, a new solution is needed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a contact finger type copper-aluminum bar clamping device which is used for solving the problem of poor conductive effect caused by the fact that a clamp and a copper-aluminum bar cannot be tightly adhered in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a touch finger formula copper aluminium bar clamping device, includes two grip blocks that can keep away from relatively or be close to, two conductive copper plate is installed to the medial surface of grip block, still be equipped with the elastic pad between conductive copper plate and the grip block, just conductive copper plate divides into a plurality of parallel arrangement's copper sheet.

The clamp comprises a clamp body and a linear driver, wherein the clamp body comprises two clamping arms and a connecting rod, two ends of the connecting rod are respectively hinged to the middle parts of the two clamping arms to form two fulcrums, two ends of the linear driver are respectively hinged to first ends of the two clamping arms, and second ends of the two clamping arms can be driven by the linear driver to do opening and closing movement around the fulcrums.

As a further improvement, the two clamping plates are respectively fixedly connected to the tail end of one clamping arm;

as a further improvement, two of the clamping plates are pivotally connected to the end of one of the clamping arms, respectively, so that the clamping plates can swing around the pivot shafts.

As a further improvement, one end of each clamping arm far away from the linear driver is bent relatively to form a bending part, and the clamping plate is connected to the tail end of the bending part.

As a further improvement, the distal end of the bent portion is protruded in a clamping direction to form a convex portion, and the clamping plate is attached to the convex portion.

As a further improvement, the pivot point is spaced from the first end of the clamp arm a greater distance than the pivot point is spaced from the second end of the clamp arm.

As a further improvement, each clamping arm comprises two plates and a connecting plate fixedly connected between the two plates, and the clamping arms are in a frame structure;

the two connecting rods are arranged along the extending direction of the copper-aluminum bars, and the two ends of each connecting rod are pivoted with the strip-shaped plate on the same side through a first pivot;

the two linear drivers are arranged along the extending direction of the copper-aluminum bars, and the two ends of each linear driver are respectively hinged with the first ends of the same side strip plate; the two linear drivers run synchronously;

each clamping plate is pivoted at the tail end of the same side strip-shaped plate through a second pivot and can swing around the second pivot.

As a further improvement, the device also comprises a limiting mechanism, wherein the limiting mechanism comprises a fixed plate, a plurality of elastic sheets and a plurality of limiting bolts;

the fixing plate is fixedly connected to the outer side of the clamping arm and is parallel to the extending direction of the copper-aluminum bars;

one end of each elastic piece is connected to the fixed plate, and a plurality of elastic pieces are distributed on two sides of the fixed plate in a staggered manner;

the tail end of each elastic piece is provided with a screw hole, the limiting bolt penetrates through the screw hole, and the length of the limiting bolt penetrating through the screw hole is adjustable.

As a further development, the linear drive comprises a hydraulic cylinder or a screw.

Compared with the prior art, the utility model has the following beneficial effects:

according to the finger-type copper-aluminum bar clamping device, the elastic pad is arranged between the conductive copper plate and the clamping plate, and meanwhile the conductive copper plate is divided into the plurality of copper sheets which are arranged in parallel, when the mounting position of the copper-aluminum bar is deviated or bending deformation occurs on the surface of the copper-aluminum bar, each copper sheet can be subjected to adaptive buffer adjustment according to the surface condition of the copper-aluminum bar in the coverage area of each copper sheet, and the whole conductive copper plate is tightly attached and compactly attached to the surface of the copper-aluminum bar like a plurality of fingers, so that a stable and good conductive effect is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a perspective view of a contact finger type copper aluminum bar clamping device of the utility model;

FIG. 2 shows a partial block diagram of two clamping plates of FIG. 1;

FIG. 3 shows an exploded perspective view of one of the clamping plates of FIG. 2;

FIG. 4 shows a state diagram of the contact finger type copper-aluminum bar clamping device for clamping copper-aluminum bars;

FIG. 5 shows a state diagram of the contact finger type copper aluminum bar clamping device of the utility model mounted on a beam of a vehicle body;

FIG. 6 is a perspective view of the bottom plate of the contact finger copper aluminum bar clamping device of the present utility model (one of the linear drives is omitted);

FIG. 7 shows a block diagram of the clamping plate of the present utility model fixedly attached to a clamping arm;

FIG. 8 shows a schematic view of a V-clip configuration in another embodiment of the utility model;

fig. 9 shows a schematic diagram of a push-to-push configuration in a further embodiment of the utility model.

Description of main reference numerals:

a clamping device-100; a clamp body-10; a clamping arm-11; a curved portion-111; a convex portion-112; a strip-shaped plate 113; a connecting plate-114; a first pivot-115; a second pivot-116; a fixing plate-117; shrapnel-118; limit bolts-119; a connecting rod-12; a linear actuator-20; a clamping plate-30; conductive copper plate-40; copper sheet-41; an elastic pad-50; a cable-60; a bus plate-70; a cross beam-80; copper-aluminum bars-90.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples

Referring to fig. 1-7, the present embodiment discloses a finger-type copper-aluminum bar clamping device 100, which is applied in a production system of a graphitization furnace for clamping a copper-aluminum bar 90 for electrical connection. Unless otherwise indicated, the copper-aluminum bars 90 described below are elongated with rectangular cross sections, and the copper-aluminum bars 90 are suspended around the periphery of the furnace.

In this embodiment, the contact finger type copper aluminum bar 90 clamping device 100 is a clamp type structure using the lever principle, and specifically: the contact finger type copper aluminum bar 90 clamping device 100 comprises a clamp body 10, a linear driver 20 and a clamping plate 30.

Referring to fig. 1 and 4, in one embodiment, a clamp body 10 includes two clamping arms 11 and a connecting rod 12, two ends of the connecting rod 12 are respectively hinged to middle portions of the two clamping arms 11 to form two fulcrums, and the clamping arms 11 and the connecting rod 12 are both sheet-shaped plates and elongated; the two ends of the linear driver 20 are respectively hinged to the first ends of the two clamping arms 11, and the second ends of the two clamping arms 11 can open and close around the pivot under the driving of the linear driver 20. The linear actuator 20 in this embodiment is a hydraulic cylinder, however, in other embodiments, a screw may be used, and the description thereof will be omitted.

Referring to fig. 7, two clamping plates 30 are respectively and fixedly connected to the end of one of the clamping arms 11, so that the two clamping plates 30 can be relatively moved closer to or farther away from each other under the driving of the clamping arm 11, thereby achieving the clamping and releasing effects. Specifically, the shape of the clamping plate 30 is rectangular, and the size of the clamping plate is matched with the size of the copper-aluminum bar 90, it is understood that the shape of the clamping plate 30 can also be circular, elliptical or other geometric shapes, and the rectangular shape is relatively easy to manufacture.

Referring to fig. 1-3, an inner side of each clamping plate 30 is provided with a conductive copper plate 40, and the conductive copper plate 40 is used for directly contacting with a surface of the copper-aluminum bar 90 so as to conduct current. An elastic pad 50 is further disposed between the conductive copper plate 40 and the clamping plate 30, and the conductive copper plate 40 is divided into a plurality of copper sheets 41 arranged in parallel, for example, four copper sheets 41 in the embodiment; the elastic pad 50 is made of an elastic material such as a rubber sheet, a silicone sheet, a bulked tetrafluoro sheet, a graphite pad, an asbestos pad, a ceramic fiber pad, a glass fiber pad, etc.

The working principle of the contact finger type copper-aluminum bar 90 clamping device 100 of the embodiment is as follows:

the contact finger type copper-aluminum bar 90 clamping device 100 is upward in opening, and moves from bottom to top to below the copper-aluminum bar 90 in operation. When the copper-aluminum bar 90 extends into the opening, the hydraulic cylinder drives to extend, and the two clamping arms 11 swing around the pivot, so that the second ends of the clamping arms 11 are abutted against each other, and finally the two clamping plates 30 are driven to clamp on two opposite surfaces of the copper-aluminum bar 90. Because the elastic pad 50 is arranged between the conductive copper plate 40 and the clamping plate 30, the conductive copper plate 40 can elastically sink into the clamping plate 30 when being extruded, and the conductive copper plate 40 is divided into a plurality of copper sheets 41 which are arranged in parallel, so that each copper sheet 41 can independently and adaptively sink in the whole area covered by the conductive copper plate 40, the contact sensitivity of the whole conductive copper plate 40 to the surface fluctuation of the copper-aluminum row 90 is improved, and the conductive copper plate 40 and the surface of the copper-aluminum row 90 are further ensured to be tightly attached and compactly adhered, so that a stable and good conductive effect is ensured. When the clamping arm is loosened, the hydraulic cylinder is contracted, the second end of the clamping arm 11 is driven to open, and the clamping plate 30 is separated from the copper-aluminum bar 90, so that separation is completed.

Referring to fig. 1-6, in a preferred embodiment, two clamping plates 30 are pivotally connected to the ends of one of the clamping arms 11, respectively, so that the clamping plates 30 can swing around the pivot, and when the device is clamped on the copper-aluminum bar 90, the two clamping plates 30 can swing correspondingly according to the deviation of the position of the copper-aluminum bar 90, thereby reducing the redundant stress between the clamping device 100 and the copper-aluminum bar 90 and prolonging the service life of the device.

In the actual production process of the graphitizing furnace, the position of the copper-aluminum bar 90 is not in absolute vertical opposite relation with the clamping device 100, and the copper-aluminum bar 90 can also generate bending deformation to a certain extent due to long-term use, the contact finger type structure can compensate for poor contact phenomenon caused by uneven surface of the copper-aluminum bar 90, and can also solve the problem of fine position deviation, but if the overall shape of the copper-aluminum bar 90 generates larger bending deformation, larger torsional stress exists between the clamping device 100 and the copper-aluminum bar 90 after clamping, and the stress consumes more energy on one hand and accelerates the fatigue aging rate of related structural members on the other hand. The clamping plates 30 are arranged to be pivoted at the tail ends of the clamping arms 11, the two clamping plates 30 can swing at a small angle to further adapt to the deformation condition of the copper-aluminum bar 90, and the redundant stress caused by deformation between the clamping device 100 and the copper-aluminum bar 90 is eliminated, so that the problems are solved.

With continued reference to fig. 1, 4 and 5, as a preferred embodiment, the ends of the two clamping arms 11 away from the linear actuator 20 are bent relatively to form a bending portion 111, and the clamping plate 30 is connected to the end of the bending portion 111. The front end of the clamping arm 11 is arranged to be slightly bent inwards, which is more advantageous for force transmission, and the clamping plate 30 obtains more room for movement inside the clamping arm 11.

Further, the end of the bending portion 111 protrudes in the clamping direction to form a protrusion 112, and the clamping plate 30 is connected to the protrusion 112, which provides a further movable space for the clamping plate 30 inside the clamping arm 11, and reduces interference between the clamping plate 30 and the clamping arm 11 during swinging.

The clamp body 10 of the above embodiment applies force by using the lever principle, that is, the end point of the connecting rod 12 is used as a fulcrum to divide the clamping arm 11 into an upper section and a lower section, and the purpose of saving energy consumption can be achieved by setting the length ratio of the upper section and the lower section. For example, in a specific embodiment, the length ratio of the lower section to the upper section is set to be 1.5:1, so that only 1 part of acting force is applied to the driving end to obtain 1.5 times of acting force at the clamping end, thereby achieving the purpose of reducing the pressure of the hydraulic cylinder.

Please refer to fig. 1, 5 and 6, which are perspective views of the finger-type copper-aluminum bar clamping device 100 according to the present utility model from various views.

In this embodiment, each clamping arm 11 includes two plates 113 and a connecting plate 114 fixedly connected between the two plates 113, the connecting plate 114 is used for connecting the two plates 113 into a whole, the clamping arms 11 are in a frame structure, and the two clamping arms 11 are symmetrically arranged;

the two connecting rods 12 are arranged along the extending direction of the copper-aluminum bars 90, two ends of each connecting rod 12 are pivoted with the strip-shaped plate 113 on the same side through a first pivot 115, and the first pivot 115 forms a fulcrum in the above description;

the two linear drivers 20 are arranged along the extending direction of the copper-aluminum bars 90, and two ends of each linear driver 20 are respectively hinged with the first ends of the same side strip plate 113; the two linear drives 20 operate synchronously;

each of the holding plates 30 is pivotally connected to the end of the same side strip plate 113 by a second pivot 116 and is swingable about the second pivot 116.

The action principle of the contact finger type copper aluminum bar clamping device 100 is as follows:

the contact finger type copper-aluminum bar clamping device 100 is upward in opening, and moves from bottom to top to below the copper-aluminum bar 90 in operation. When the copper-aluminum bar 90 extends into the opening, the two hydraulic cylinders are synchronously driven to extend, and the two clamping arms 11 swing around the first pivot 115, so that the second ends of the clamping arms 11 abut against each other, and finally drive the two clamping plates 30 to clamp on two opposite surfaces of the copper-aluminum bar 90. Because the elastic pad 50 is arranged between the conductive copper plate 40 and the clamping plate 30, the conductive copper plate 40 can elastically sink into the clamping plate 30 when being extruded, and the conductive copper plate 40 is divided into a plurality of copper sheets 41 which are arranged in parallel, so that each copper sheet 41 can independently and adaptively sink in the whole area covered by the conductive copper plate 40, the contact sensitivity of the whole conductive copper plate 40 to the surface fluctuation of the copper-aluminum row 90 is improved, and the conductive copper plate 40 and the surface of the copper-aluminum row 90 are further ensured to be tightly attached and compactly adhered, so that a stable and good conductive effect is ensured. When the clamping arm is loosened, the two hydraulic cylinders synchronously shrink, so that the second ends of the clamping arms 11 are driven to open, and the clamping plate 30 is separated from the copper-aluminum bars 90, so that separation is completed.

Referring to fig. 4, the finger-type copper-aluminum bar clamping device 100 is used to clamp the copper-aluminum bar 90 located above in the working state, so that the opening of the copper-aluminum bar is upward, and the lower part of the device is used for connecting the cable 60 and other components. Specifically, each copper sheet 41 is elongated and bent several times according to the installation space, and finally the elongated portion of the copper sheet 41 and the wire end of the cable 60 are firmly connected to a bus plate 70 by a plurality of bolts.

Referring to fig. 5 and 6, it should be noted that the finger-type copper-aluminum bar clamping device 100 is fixed on a movable vehicle body (not shown), specifically, the vehicle body is provided with a beam 80 along the extending direction of the copper-aluminum bar 90, after assembly, the beam 80 passes through the space between the connecting rod 12 and the linear actuator 20, and the connecting rod 12 is fixed on the beam 80, so that the whole clamping device 100 is fixed on the vehicle body. The design of the two linear drivers 20 in the above embodiment allows the entire contact finger type copper aluminum bar clamping device 100 to obtain more installation space below, which is beneficial to the arrangement and connection of the cables 60 and reduces interference between structural members.

Referring to fig. 1 and 5, as a preferred embodiment, the finger-type copper-aluminum bar clamping device 100 is further provided with a limiting mechanism for limiting the free swing amplitude of the clamping plate 30 relative to the clamping arm 11. Specifically, the limiting mechanism includes a fixing plate 117, a plurality of elastic sheets 118, and a plurality of limiting bolts 119.

The fixing plate 117 is fixedly connected to the outer side of the clamping arm 11, specifically, connected between the two strip-shaped plates 113, and located at the outer side of the clamping arm 11; and the fixing plate 117 is parallel to the extending direction of the copper aluminum bars 90.

The elastic sheets 118 are in an arc shape, one end of each elastic sheet 118 is connected to the fixed plate 117, the other end extends upwards or downwards, and the elastic sheets 118 are distributed on two sides of the fixed plate 117 in a staggered manner, namely, at least one elastic sheet 118, such as four elastic sheets 118, are arranged on the upper side and the lower side of the fixed plate 117, are upwards two and downwards two and are staggered with each other. The bow back of the spring 118 faces outward, i.e., the plurality of spring 118 are generally claw-shaped pointing toward the back of the clamping plate 30.

The tail end of each elastic sheet 118 is provided with a screw hole, a limit bolt 119 is arranged in the screw hole in a penetrating mode, and the length of the limit bolt 119 penetrating through the screw hole is adjustable.

The working principle of the limiting mechanism is as follows:

the plurality of elastic sheets 118 are in claw shape and point to the back surface of the clamping plate 30, so that when the clamping plate 30 swings around the second pivot 116, the clamping plate 30 is blocked by the elastic sheets 118, thereby limiting the swing amplitude of the clamping plate 30 and preventing the clamping plate 30 from swinging at a large angle; the bolts penetrating the ends of the elastic pieces 118 can ensure that the elastic pieces 118 on the same side keep the clamping plates 30 synchronously and uniformly.

It should be noted that, the clamp body 10 using the lever structure in the above embodiment is only a preferred embodiment of the present utility model, but the structure of the clamp body 10 of the present utility model is not limited thereto, and for example, in other embodiments, the clamp body 10 may be configured as a V-shaped clip structure, that is, the first ends of the two clamping arms 11 are combined and hinged together, the second ends thereof are openable and closable, and the linear actuator 20 is connected between the two clamping arms 11 (as shown in fig. 8); alternatively, the clamp body 10 may be configured in a push-to-push structure (as shown in fig. 9), that is, one linear actuator 20 is respectively disposed on two opposite sides, the linear actuators 20 are connected to the clamping plates 30, and when tightening is required, both the linear actuators 20 apply force to the middle, so that the two clamping plates 30 can achieve the clamping function. Regardless of how the clamp body 10 is changed, as long as the clamping plate 30 for contacting the copper-aluminum bar 90 adopts the spirit of the present utility model, that is, the scheme of providing the elastic pad 50 between the conductive copper plate 40 and the clamping plate 30 and dividing the conductive copper plate 40 into multiple pieces should fall into the protection scope of the present utility model.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The utility model provides a touch finger formula copper aluminium bar clamping device, includes two grip blocks that can keep away from relatively or be close to, two conductive copper plate, its characterized in that are installed to the medial surface of grip block: an elastic pad is further arranged between the conductive copper plate and the clamping plate, and the conductive copper plate is divided into a plurality of copper sheets which are arranged in parallel.

2. The contact finger type copper aluminum bar clamping device according to claim 1, further comprising a clamp body and a linear driver, wherein the clamp body comprises two clamping arms and a connecting rod, two ends of the connecting rod are respectively hinged to the middle parts of the two clamping arms to form two fulcrums, two ends of the linear driver are respectively hinged to first ends of the two clamping arms, and second ends of the two clamping arms can be driven by the linear driver to do opening and closing movement around the fulcrums.

3. The contact finger type copper aluminum bar clamping device according to claim 2, wherein the two clamping plates are fixedly connected to the tail end of one of the clamping arms respectively.

4. The contact finger copper aluminum bar clamping device according to claim 2, wherein two clamping plates are pivotally connected to the end of one of the clamping arms, respectively, so that the clamping plates can swing around a pivot.

5. The contact finger type copper aluminum busbar clamping device as set forth in any one of claims 2 to 4, wherein ends of the two clamping arms, which are far away from the linear actuator, are bent relatively to form a bent portion, and the clamping plate is connected to the end of the bent portion.

6. The contact finger type copper aluminum busbar clamping device as set forth in claim 5, wherein the distal end of the bent portion protrudes toward the clamping direction to form a convex portion, and the clamping plate is connected to the convex portion.

7. The contact finger copper aluminum bar clamp of claim 2 wherein the distance from the fulcrum to the first end of the clamp arm is greater than the distance from the fulcrum to the second end of the clamp arm.

8. The contact finger type copper aluminum bar clamping device according to claim 2, wherein each clamping arm comprises two plates and a connecting plate fixedly connected between the two plates, and the clamping arms are in a frame structure;

the two connecting rods are arranged along the extending direction of the copper-aluminum bars, and the two ends of each connecting rod are pivoted with the strip-shaped plate on the same side through a first pivot;

the two linear drivers are arranged along the extending direction of the copper-aluminum bars, and the two ends of each linear driver are respectively hinged with the first ends of the same side strip plate; the two linear drivers run synchronously;

each clamping plate is pivoted at the tail end of the same side strip-shaped plate through a second pivot and can swing around the second pivot.

9. The contact finger type copper aluminum bar clamping device according to claim 8, further comprising a limiting mechanism, wherein the limiting mechanism comprises a fixed plate, a plurality of elastic sheets and a plurality of limiting bolts;

the fixing plate is fixedly connected to the outer side of the clamping arm and is parallel to the extending direction of the copper-aluminum bars;

one end of each elastic piece is connected to the fixed plate, and a plurality of elastic pieces are distributed on two sides of the fixed plate in a staggered manner;

the tail end of each elastic piece is provided with a screw hole, the limiting bolt penetrates through the screw hole, and the length of the limiting bolt penetrating through the screw hole is adjustable.

10. The contact finger copper aluminum bar clamping device as in claim 2, wherein the linear actuator comprises a hydraulic cylinder or a lead screw.