A portable vise workbench

Abstract

This utility model discloses a portable vise workbench, aiming to solve the problems of traditional vises that rely on being mounted on a fixed workbench, making them unable to be flexibly moved and adjusted according to actual work needs, and relying on the slow speed of manually rotating the screw to drive the jaws to clamp the workpiece. The key technical points are: a portable vise workbench, comprising: a frame with a first working end and a second working end arranged front and rear along its length; and a clamping assembly including a fixed slide rail disposed on the first working end and a movable slide rail slidably connected to the fixed slide rail, with a fixed jaw provided at the front end of the fixed slide rail on the first working end. This portable vise workbench of the utility model integrates the workbench and vise into a single design. Through the foldable support assembly, the vise can be easily moved to a suitable position for use according to actual conditions, while improving the jaw driving method and making the entire clamping process smoother.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and more specifically, to a portable vise workbench. Background Technology

[0002] A vise is a general-purpose clamping tool used to hold workpieces. It is widely used in machining, fitter operations and other fields. Its working principle is based on a screw and nut structure. By rotating the screw, the screw rotates in the guide nut and generates axial movement, which in turn pushes the movable jaws closer to or away from the other fixed jaws to achieve clamping and fixing of the workpiece, providing stable support for subsequent machining operations. Vises are often required to be installed on a fixed workbench for use.

[0003] However, in actual use, it has been found that the traditional vise working mode still has its inconveniences. On the one hand, the vise relies on being installed on a fixed workbench, which makes the position of the vise relatively fixed and unable to be moved and adjusted flexibly according to actual work needs, which greatly limits the flexibility of the vise. On the other hand, the manual continuous rotation of the screw to drive the jaws to clamp the workpiece is relatively slow, and both hands need to support the workpiece and rotate the screw at the same time, which is very inconvenient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a portable vise workbench that integrates the workbench and vise into one unit. With the addition of a foldable support component, the vise can be easily moved to a suitable position for use according to the actual situation, which greatly improves the flexibility of vise use and can better adapt to different work scenarios.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a portable vise workbench, comprising: The frame has a first working end and a second working end arranged at the front and rear along its length. The clamping assembly includes a fixed slide rail disposed at a first working end and a movable slide rail slidably connected to the fixed slide rail. The first working end is provided with a fixed jaw at the front end of the fixed slide rail, and the movable slide rail is provided with a movable jaw opposite to the fixed jaw. The drive assembly includes a foot pedal foldably disposed at the first working end and a transmission unit driven by the foot pedal, the transmission unit driving a movable slide rail to move the movable jaws closer to or away from the fixed jaws, and also includes a locking unit for keeping the movable jaws in a clamping position. A foldable support assembly is provided at the bottom support frame of the frame, including a first support unit and a second support unit symmetrically arranged at the first working end, and a third support unit arranged at the second working end. The third support unit, together with the first support unit and the second support unit, constitutes a triangular support structure.

[0006] The present invention is further configured such that: the transmission unit includes a first drive arm rotatably connected to the frame, a first elastic element is provided between the first drive arm and the frame, a second drive arm is rotatably connected to the other end of the first drive arm, a second elastic element is provided between the second drive arm and the first drive arm, and a drive block is provided at the top of the end of the second drive arm away from the first drive arm, a push block is provided at the top of the drive block, a plurality of grooves for the push block to be inserted are provided on the movable slide rail, the plurality of grooves are evenly provided along the length direction of the movable slide rail, and a stop plate is provided on one side of the drive block on the frame.

[0007] The present invention is further configured such that: the end of the first drive arm away from the second drive arm is rotatably connected to the foot pedal, and a rotation limiting part is provided between the foot pedal and the first drive arm. The rotation limiting part includes a limiting piece provided on the foot pedal. A locking pull piece is slidably connected between the limiting piece and the foot pedal, and a third elastic element is provided between the locking pull piece and the limiting piece. A locking pin is provided at the upper end of the locking pull piece, and a slot for the locking pin to be engaged is provided on the first drive arm.

[0008] The present invention is further configured such that: the locking unit includes a first base disposed at the upper end of the first working end, a sliding lock that slides up and down along the first base, a long connecting rod connected to the inner side of the sliding lock, a sliding piece connected to the lower end of the long connecting rod, and a second base disposed at the lower end of the second working end. The sliding piece is slidably connected to the second base and its lower end is rotatably connected to a movable block. A swing shaft is slidably inserted through the movable block. A swing seat is rotatably connected to the upper end of the swing shaft, and the lower end of the swing seat is rotatably connected to the second base. A fourth elastic element is sleeved on the swing shaft. A locking rod is rotatably connected to the first driving arm. An opening for the locking rod to pass through is provided at the upper end of the swing seat.

[0009] The present invention is further configured such that: the first support unit includes a U-shaped stop plate disposed on the frame, a first support rod is rotatably connected to the U-shaped stop plate, and a first limiting unit is disposed between the first support rod and the U-shaped stop plate, the first limiting unit keeping the first support rod in a supporting state.

[0010] The present invention is further configured such that: the first limiting unit includes a cover body disposed on the first support rod, a stop block is slidably connected inside the cover body, the stop block is provided with a first long groove, a first screw fixed to the first support rod is inserted through the first long groove, the first screw extends to the outside of the cover body and is threadedly fitted with a first nut knob, the first nut knob is generally in the form of a cam structure, and the outer side of the stop block has a protruding edge that abuts against the protrusion of the first nut knob.

[0011] The present invention is further configured such that: the third support unit includes a base plate disposed on the frame, a third support rod is rotatably connected to the base plate, and a second limiting unit is disposed between the third support rod and the base plate, the second limiting unit keeping the third support rod in a supporting state.

[0012] The present invention is further configured such that: the second limiting unit includes a second long groove formed on the third support rod, a second screw fixed on the base plate passes through the second long groove, a second nut knob is threaded on the second screw, clamps are provided on both sides of the third support rod, the clamps are movably sleeved on the second screw, a card plate is provided on the inner side of the base plate, and a slot is formed in the card plate for the upper end of the third support rod to abut against.

[0013] In summary, this utility model has the following beneficial effects: Compared with the prior art, this application has the following advantages: the workbench and vise are integrated into one design, and the foldable support component allows the vise to be easily moved to a suitable position for use according to the actual situation, which greatly improves the flexibility of vise use and can better adapt to different work scenarios; at the same time, the driving method of the jaws is improved. By using a foot pedal to drive the transmission unit, the moving jaws are moved. The operator only needs to step on the foot pedal to achieve the clamping action of the jaws, and can focus on supporting, positioning and adjusting the workpiece, making the whole clamping process smoother. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the vise workbench of this utility model; Figure 2 This is a schematic diagram of the transmission unit of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the transmission unit of this utility model. Figure 2 ; Figure 4 This is a motion diagram of the transmission unit of this utility model; Figure 5 for Figure 4 Enlarged view of part A; Figure 6 This is a schematic diagram of the locking unit of this utility model; Figure 7 for Figure 6 Enlarged view of part B; Figure 8 This is a schematic diagram of the structure of the first support unit of this utility model; Figure 9 This is a schematic diagram of the structure of the third support unit of this utility model; Figure 10 This is a schematic diagram of the rotation limiting part of this utility model; Figure 11 This is a schematic diagram of the folded state of the vise workbench of this utility model. Figure 12 This is a schematic diagram of the folded state of the vise workbench of this utility model.

[0015] In the diagram: 1. Frame; 11. First working end; 12. Second working end; 2. Clamping assembly; 21. Fixed slide rail; 22. Movable slide rail; 23. Fixed jaws; 24. Movable jaws; 3. Drive assembly; 31. Foot pedal; 32. Transmission unit; 33. Locking unit; 4. Folding support assembly; 41. First support unit; 42. Second support unit; 43. Third support unit; 321. First drive arm; 322. First elastic element; 323. Second drive arm; 324. Second elastic element; 325. Drive block; 326. Push block; 327. Groove; 328. Stop plate; 311. Limiting plate; 312. Locking pull plate; 313. Third elastic element; 14. Locking pin; 331. Slide lock; 332. Long connecting rod; 333. Sliding piece; 334. Movable block; 335. Swing shaft; 336. Swing seat; 337. Fourth elastic element; 338. Locking rod; 411. U-shaped stop plate; 412. First support rod; 413. First limiting unit; 4131. Stop block; 4132. First screw; 4133. First nut knob; 431. Base plate; 432. Third support rod; 433. Second limiting unit; 4331. Second screw; 4332. Second nut knob; 4333. Clamping piece; 4334. Locking plate; 329. Rotation limiting plate; 3210. Limiting pin; 434. Auxiliary wheel; 435. U-shaped limiting strip. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] Reference Figure 1 A portable vise workbench, comprising: The frame 1, as the main frame of the entire vise workbench, provides the basic structure for installing and supporting other components. It has a first working end 11 and a second working end 12 arranged in the front and rear along the length direction. The clamping assembly 2 includes a fixed slide rail 21 fixedly mounted on the first working end 11 and a movable slide rail 22 slidably connected to the fixed slide rail 21. The first working end 11 is fixedly provided with a fixed jaw 23 at the front end of the fixed slide rail 21, and a movable jaw 24 opposite to the fixed jaw 23 is fixedly provided on the movable slide rail 22. When the movable slide rail 22 slides on the fixed slide rail 21, it will drive the movable jaw 24 to move closer to or away from the fixed jaw 23, thereby realizing the clamping or loosening operation of the workpiece. The drive assembly 3 includes a foot pedal 31 that is foldably disposed on the first working end 11 and a transmission unit 32 driven by the foot pedal 31. The transmission unit 32 drives the movable slide rail 22 to move the movable jaw 24 closer to or away from the fixed jaw 23. It also includes a locking unit 33 that keeps the movable jaw 24 in a clamping position. The foldable support assembly 4 is located at the bottom of the frame 1 and supports the frame 1. It includes a first support unit 41 and a second support unit 42 symmetrically arranged at the first working end 11 and a third support unit 43 arranged at the second working end 12. The third support unit 43, together with the first support unit 41 and the second support unit 42, forms a triangular support structure. This support structure can provide stable support. At the same time, since the foldable support assembly 4 is foldable, it can be folded up when not in use, making it convenient for storage and transfer.

[0021] Reference Figure 2 and Figure 3 The transmission unit 32 includes a first drive arm 321 rotatably connected to the frame 1. A first elastic element 322 is provided between the first drive arm 321 and the frame 1. The first elastic element 322 can be a tension spring or a compression spring depending on its position. In this embodiment, a tension spring is used. The other end of the first drive arm 321 is rotatably connected to a second drive arm 323. A second elastic element 324 is provided between the second drive arm 323 and the first drive arm 321. In this embodiment, the second elastic element 324 is specifically a torsion spring. A drive block 325 is fixedly provided at the top of the end of the second drive arm 323 away from the first drive arm 321. A push block 326 is fixedly provided at the top of the drive block 325. A plurality of grooves 327 for the push block 326 to be inserted are provided on the movable slide rail 22. The plurality of grooves 327 are evenly provided along the length direction of the movable slide rail 22. A stop plate 328 is fixedly provided on one side of the drive block 325 on the frame 1.

[0022] In the initial state (when the foot pedal 31 is not pressed), the second drive arm 323, under the action of the second elastic member 324, causes the second drive arm 323, drive block 325 and push block 326 to always have an upward deflection force. This force is controlled by the force of the stop plate 328 on the drive block 325 at the same time, so that the upward deflection force is controlled to keep the push block 326 disengaged from the groove 327. Reference Figure 4 and Figure 5When in use, when a person is positioned at the first working end 11 and presses down on the foot pedal 31, the foot pedal 31 drives the first drive arm 321 to rotate downwards, while the second drive arm 323 moves forward under the action of the first drive arm 321. The drive block 325 then disengages from the stop plate 328 and continues to deflect upwards under the force of the second elastic element 324. The push block 326 engages in the groove 327. As the foot pedal 31 continues to be pressed down, it drives the second drive arm 323 to move forward. During this forward movement, the engagement of the push block 326 with the groove 327 moves the movable slide rail 22, causing the movable jaws 24 on the movable slide rail 22 to move closer to the fixed jaws 23. When the foot pedal 31 is pressed to its limit, the movable slide rail 22 is driven forward to its maximum extent. Releasing the foot pedal 31 causes the first drive arm 321 to rotate under the action of the first elastic element 322, which in turn drives the second drive arm 323 to move backward. During this backward movement, the drive block 325 contacts the stop plate 328 again and, under this pushing action, overcomes the rotation of the second elastic element 324, thereby driving the push block 326 to exit the groove 327. After exiting, the second drive arm 323 continues to move backward. During this entire reset and backward movement process, the presence of the stop plate 328 prevents the push block 326 from failing to exit the groove 327 in time, thus avoiding the problem of the movable slide rail 22 moving backward. By repeatedly pressing the foot pedal 31, the sliding slide rail can be driven to quickly advance along the fixed slide rail 21, thereby enabling the movable jaw 24 to quickly move forward towards the fixed jaw 23 to clamp the workpiece.

[0023] In this embodiment, there are four push blocks 326 arranged in a matrix, and two sets of grooves 327 are arranged side by side. Each time the foot pedal 31 is stepped on, four push blocks 326 can be inserted into the grooves 327 to drive the movable slide rail 22 to move, thus ensuring the driving effect.

[0024] The rear side of the push block 326 is provided with an inclined surface so that when the push block 326 moves backward and rotates out of the groove 327 within sufficient space, it will not generate a contact force on the movable slide rail 22.

[0025] The frame 1 is also fixedly provided with a rotation limit plate 329 above the first drive arm 321, which is used to control the rotation amplitude of the first drive arm 321 after the foot pedal 31 is released, so as to avoid excessive rotation causing collision or damage.

[0026] The movable slide rail 22 can not only slide along the fixed slide rail 21, but also be fully pulled out from the fixed slide rail 21, reversed, and then reinstalled onto the movable slide rail 22. This makes the initial maximum distance between the movable jaw 24 and the fixed jaw 23 on the movable slide rail 22 adjustable, making it more flexible and adaptable. A limit pin 3210 is fixedly provided on the second drive arm 323 to prevent the foot pedal 31 from being accidentally stepped on when the sliding slide rail is fully pulled out, causing the push block 326 to deflect upward under the action of the second elastic element 324 and collide with the frame 1 or the fixed slide rail 21.

[0027] Reference Figure 1 , Figure 10 and Figure 11 The end of the first drive arm 321 away from the second drive arm 323 is rotatably connected to the foot pedal 31, and a rotation limiting part is provided between the foot pedal 31 and the first drive arm 321. The rotation limiting part includes a limiting piece 311 fixedly provided on the foot pedal 31. A locking piece 312 is slidably connected between the limiting piece 311 and the foot pedal 31, and a third elastic element 313 is provided between the locking piece 312 and the limiting piece 311. The third elastic element is specifically a tension spring. A locking pin 314 is fixedly provided at the upper end of the locking piece 312, and a slot for the locking pin 314 to be engaged is provided on the first drive arm 321.

[0028] When the foot pedal 31 needs to be folded, press down on the locking tab 312. The locking tab 312 will drive the locking pin 314 out of the slot. At this time, the rotation limit is engaged, and the foot pedal 31 can be folded inward around the rotation center. When the foot pedal 31 is unfolded until the locking pin 314 is aligned with the slot, the locking tab 312 and the locking pin 314 will move upward under the pushing action of the third elastic element 313. The locking pin 314 will be engaged in the slot. At this time, the foot pedal 31 and the first drive arm 321 are limited. When the foot pedal 31 is stepped on, it can drive the first drive arm 321 to move synchronously.

[0029] It is understood that the foot pedal 31 and the first drive arm 321 are connected by a pin hole to achieve relative rotation. The static friction on the contact surface between the two is greater than the potential disturbance force (such as gravity and vibration), and has a friction self-locking function. That is, after the foot pedal 31 is folded into place, it will not fall back on its own when it is not subjected to external force. This is a mature existing technology.

[0030] Reference Figure 6 and Figure 7 The locking unit 33 includes a first base fixedly mounted on the upper end of the first working end 11, a sliding lock 331 that slides up and down along the first base, a long connecting rod 332 connected to the inner side of the sliding lock 331, a sliding piece 333 connected to the lower end of the long connecting rod 332, and a second base fixedly mounted on the lower end of the second working end 12. The sliding piece 333 is slidably connected to the second base and its lower end is rotatably connected to a movable block 334. A swing shaft 335 is slidably passed through the movable block 334. The upper end of the swing shaft 335 is rotatably connected to a swing seat 336, and the lower end of the swing seat 336 is rotatably connected to the second base. A fourth elastic element 337 is sleeved on the swing shaft 335. Specifically, the fourth elastic element 337 is a compression spring that abuts against the swing seat 336 and the movable seat. A locking rod 338 is rotatably connected to the first drive arm 321. An opening is provided at the upper end of the swing seat 336 for the locking rod 338 to pass through.

[0031] When the sliding lock 331 is pressed down, the sliding lock 331 will push the sliding piece 333 down along the second base through the long connecting rod 332. The movable block 334 moves down and rotates adaptively. The swing shaft 335 is deflected by force. While the swing shaft 335 deflects, it slides adaptively in the movable block 334. The fourth elastic element 337 is adaptively compressed. The swing shaft 335 drives the swing seat 336 to deflect upward relative to the second base. Then the locking rod 338 is stuck on the inner wall of the opening side of the swing seat 336. At this time, the locking rod 338 cannot move upward. After stepping on the foot pedal 31, the foot pedal 31 drives the first drive arm 321 and the locking rod 338 downward. The locking rod 338 is then locked with the opening of the swing seat 336, that is, the position of the fixed jaw 23 is locked. When it is necessary to unlock, slide lock 331 is pushed up. Slide lock 331 drives long connecting rod 332, slide plate 333, and moving block 334 to move up. The swing shaft 335 drives the swing seat 336 to rotate. The swing seat 336 rotates to a certain angle so that the inner wall of the opening can not abut against the locking rod 338. The locking rod 338 can move freely in the opening. At this time, the foot pedal 31 can be stepped on freely again.

[0032] Reference Figure 8 and Figure 11 This is understandable, in order to better demonstrate the structure. Figure 8 The first nut knob 4133 on the first support rod 412 is hidden. The first support unit 41 includes a U-shaped stop plate 411 fixed on the frame 1. The first support rod 412 is rotatably connected to the U-shaped stop plate 411. A first limiting unit 413 is provided between the first support rod 412 and the U-shaped stop plate 411. The first limiting unit 413 keeps the first support rod 412 in a supported state.

[0033] The first limiting unit 413 includes a cover fixedly mounted on the first support rod 412. A stop block 4131 is slidably connected inside the cover. A first long groove is provided on the stop block 4131. A first screw 4132 fixed to the first support rod 412 passes through the first long groove. The first screw 4132 extends to the outside of the cover and is threaded with a first nut knob 4133. The first nut knob 4133 has an overall cam structure. The outer side of the stop block 4131 has a protruding edge that abuts against the protrusion of the first nut knob 4133.

[0034] In this structure, the first support rod 412 can neither extend outward nor rotate inward, thus maintaining a stable support function. When it is necessary to fold inward, the first nut knob 4133 is rotated so that the protrusion of the first nut knob 4133 moves away from the position of abutting the protruding edge of the stop block 4131. After the stop block 4131 is released from its restriction, it can slide downward, so that the stop block 4131 is separated from the position of abutting the lower edge of the U-shaped stop plate 411. At this time, the restriction on the inward rotation of the first support rod 412 is released, and the first support rod 412 can be freely rotated inward to achieve folding.

[0035] It is understandable that the first support rod 412 and the U-shaped stop plate 411 are connected by a pin hole to achieve relative rotation. The static friction on the contact surface of the two is greater than the potential disturbance force (such as gravity and vibration), and has a friction self-locking function. That is, after the first support rod 412 is folded into place, it will not fall back on its own when it is not subjected to external force. This is a mature existing technology.

[0036] The second support unit 42 has the same structure as the first support unit 41 and is implemented in the same way.

[0037] Reference Figure 1 , Figure 9 , Figure 11 and Figure 12 This is understandable, in order to better demonstrate the structure. Figure 9 The clip 4333 on one side is hidden. The third support unit 43 includes a base plate 431 fixed on the frame 1. A third support rod 432 is rotatably connected to the base plate 431. A second limiting unit 433 is provided between the third support rod 432 and the base plate 431. The second limiting unit 433 keeps the third support rod 432 in a supported state.

[0038] The second limiting unit 433 includes a second elongated groove formed on the third support rod 432. A second screw 4331 fixed on the base plate 431 passes through the second elongated groove. A second nut knob 4332 is threaded on the second screw 4331. Clamping pieces 4333 are provided on both sides of the third support rod 432. The clamping pieces 4333 are movably sleeved on the second screw 4331. A retaining plate 4334 is fixed on the inner side of the base plate 431. A slot is formed in the retaining plate 4334 for the upper end of the third support rod 432 to abut against it.

[0039] In this structure, the third support rod 432 can neither extend outward nor rotate inward, thus maintaining a stable supporting function. At this time, the upper end of the third support rod 432 is located in the slot of the clamping plate 4334. When the second nut knob 4332 is rotated and tightened, the thin sheet structure on both sides of the base plate 431 adaptably deforms, squeezing the clamping pieces 4333 on both sides of the third support rod 432 to clamp the third support rod 432. In the supported state, in addition to the clamping force of the clamping pieces 4333, the third support rod 432 can stably maintain its supporting function under the limiting action of the clamping plate 4334.

[0040] The clamping piece 4333 has a U-shaped cross-section, which increases the contact area between it and the third support rod 432, thereby increasing the clamping effect.

[0041] The third support rod 432 is in an inward folded state. A U-shaped limiting strip 435 is provided at the first working end 11 of the frame 1. The inner cavity of the U-shaped limiting strip 435 is used to accommodate the folded third support rod. The third support rod 432 is limited by the U-shaped limiting strip 435, so the entire frame 1 can be moved by hand by carrying the folded third support rod 432.

[0042] The third support rod 432 also has an outward unfolding state. The frame 1 is equipped with an auxiliary wheel 434 at the first working end 11. Loosening the second nut knob 4332 will cause the clamping plate 4333 to no longer clamp the third support rod 432. The third support rod 432 can be pulled down so that its upper end exits the slot of the clamping plate 4334 and can then rotate freely. After rotating to the desired position, the second nut knob 4332 can be tightened again. When the third support rod 432 rotates to the outward unfolding state, the third support rod 432 acts as a push-pull component. Lifting the third support rod 432 will tilt the frame 1, and the front end will contact the ground with the help of the auxiliary wheel 434, making it easy to move and transport the entire frame 1.

[0043] To improve the stability of the first support rod 412, the second support rod, and the third support rod 432 when supporting the frame 1, refer to Figure 1 The bottom of the first support rod 412, the second support rod and the third support rod 432 are all equipped with rubber pads or rubber feet to increase the contact area with the ground and the anti-slip force.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A portable vise workbench, characterized in that: include: The frame (1) has a first working end (11) and a second working end (12) arranged at the front and rear along its length. The clamping assembly (2) includes a fixed slide rail (21) disposed on the first working end (11) and a movable slide rail (22) slidably connected to the fixed slide rail (21). The first working end (11) is provided with a fixed jaw (23) at the front end of the fixed slide rail (21), and the movable slide rail (22) is provided with a movable jaw (24) opposite to the fixed jaw (23). The drive assembly (3) includes a foot pedal (31) foldably disposed on the first working end (11) and a transmission unit (32) driven by the foot pedal (31), the transmission unit (32) driving the movable slide rail (22) to move the movable jaw (24) closer to or away from the fixed jaw (23), and also includes a locking unit (33) for keeping the movable jaw (24) in a clamping position; The foldable support assembly (4) is set at the bottom support frame (1) of the frame (1), including a first support unit (41) and a second support unit (42) symmetrically arranged at the first working end (11), and a third support unit (43) arranged at the second working end (12). The third support unit (43), together with the first support unit (41) and the second support unit (42), constitutes a triangular support structure.

2. A portable vice bench according to claim 1, wherein: The transmission unit (32) includes a first drive arm (321) rotatably connected to the frame (1), a first elastic element (322) is provided between the first drive arm (321) and the frame (1), a second drive arm (323) is rotatably connected to the other end of the first drive arm (321), a second elastic element (324) is provided between the second drive arm (323) and the first drive arm (321), and a drive block (325) is provided at the top of the end of the second drive arm (323) away from the first drive arm (321), a push block (326) is provided at the top of the drive block (325), a plurality of grooves (327) for the push block (326) to be inserted are provided on the movable slide rail (22), the plurality of grooves (327) are evenly opened along the length direction of the movable slide rail (22), and a stop plate (328) is provided on one side of the drive block (325) of the frame (1).

3. A portable vice bench according to claim 2, wherein: The end of the first drive arm (321) away from the second drive arm (323) is rotatably connected to the foot pedal (31), and a rotation limiting part is provided between the foot pedal (31) and the first drive arm (321). The rotation limiting part includes a limiting piece (311) provided on the foot pedal (31). A locking piece (312) is slidably connected between the limiting piece (311) and the foot pedal (31), and a third elastic element (313) is provided between the locking piece (312) and the limiting piece (311). A locking pin (314) is provided at the upper end of the locking piece (312), and a slot for the locking pin (314) to be engaged is provided on the first drive arm (321).

4. A portable vice bench according to claim 2, wherein: The locking unit (33) includes a first base disposed on the upper end of the first working end (11), a sliding lock (331) that slides up and down along the first base, a long connecting rod (332) connected to the inner side of the sliding lock (331), a sliding piece (333) connected to the lower end of the long connecting rod (332), and a second base disposed on the lower end of the second working end (12). The sliding piece (333) is slidably connected to the second base, and a movable block (334) is rotatably connected to its lower end. A swing shaft (335) is slidably inserted inside the movable block (334). The upper end of the swing shaft (335) is rotatably connected to a swing seat (336), and the lower end of the swing seat (336) is rotatably connected to a second base. A fourth elastic element (337) is sleeved on the swing shaft (335). A locking rod (338) is rotatably connected to the first drive arm (321). An opening is provided at the upper end of the swing seat (336) for the locking rod (338) to pass through.

5. A portable vice bench as claimed in claim 1, wherein: The first support unit (41) includes a U-shaped stop plate (411) disposed on the frame (1), and a first support rod (412) is rotatably connected to the U-shaped stop plate (411). A first limiting unit (413) is disposed between the first support rod (412) and the U-shaped stop plate (411), and the first limiting unit (413) keeps the first support rod (412) in a supported state.

6. A portable vice bench according to claim 5, wherein: The first limiting unit (413) includes a cover body disposed on the first support rod (412). A stop block (4131) is slidably connected inside the cover body. A first long groove is provided on the stop block (4131). A first screw (4132) fixed to the first support rod (412) passes through the first long groove. The first screw (4132) extends to the outside of the cover body and is threaded with a first nut knob (4133). The first nut knob (4133) is in the form of a cam structure. The outer side of the stop block (4131) has a protruding edge that abuts against the protrusion of the first nut knob (4133).

7. A portable vice bench as claimed in claim 1, wherein: The third support unit (43) includes a base plate (431) disposed on the frame (1), a third support rod (432) is rotatably connected to the base plate (431), and a second limiting unit (433) is disposed between the third support rod (432) and the base plate (431), the second limiting unit (433) keeps the third support rod (432) in a supported state.

8. A portable vice bench according to claim 7, wherein: The second limiting unit (433) includes a second long groove opened on the third support rod (432), a second screw (4331) fixed on the base plate (431) is inserted in the second long groove, a second nut knob (4332) is threaded on the second screw (4331), a clamping piece (4333) is provided on both sides of the third support rod (432), the clamping piece (4333) is movably sleeved on the second screw (4331), a retaining plate (4334) is provided on the inner side of the base plate (431), and a slot is opened in the retaining plate (4334) for the upper end of the third support rod (432) to abut.

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