Supporting beam and workbench

Abstract

The invention relates to a supporting beam and a workbench, a supporting beam main body of the supporting beam and a workbench main body can be quickly locked or unlocked through a locking block, movement of the locking block is driven by an operating handle and a movable rod, and a locking block is used for locking the locking block at a first position through friction force existing between the locking block and a friction area. Therefore, quick locking of the supporting beam body and the workbench body is achieved. And when the unlocking button is driven by external force, the locking block can be driven to move, so that the locking block is separated from the friction area, and rapid unlocking of the supporting beam main body and the workbench main body is realized. Therefore, according to the supporting beam and the workbench provided by the embodiment of the invention, a user can conveniently and quickly adjust the position of the supporting beam, and the supporting beam and the workbench can be conveniently adapted to cutting saws of different models.

Description

Technical Field

[0001] The present application relates to the technical field of working tools, and in particular to a support beam and a workbench. Background Art

[0002] In the prior art, in order to solve the positioning and fixing problems of indoor and outdoor parts sawing, it is usually necessary to configure corresponding workbenches for different cutting saws. The workbenches are large in size and require certain transportation conditions to carry them to the construction site. During use, for different objects to be cut, the workbench has a single structure and function, which makes it difficult to provide assistance for the cutting work, causing certain inconveniences.

[0003] In the prior art, some workbenches are provided with a bracket specifically for supporting the cutting saw, but the bracket generally cannot adjust the width or the method of adjusting the width is complicated. When the model of the cutting tool used changes, the width of the bracket often does not match the width of the cutting tool, and the user needs to spend a lot of time adjusting the bracket. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a support beam and a workbench to solve at least one problem existing in the background technology.

[0005] In a first aspect, an embodiment of the present application provides a support beam, comprising: a support beam body and a locking structure, wherein the support beam body is used to be arranged above a workbench body to support a tool, and at least one end of the support beam body is detachably fixed to the workbench body through the locking structure;

[0006] The locking structure comprises: a fixed body, a locking block, an operating handle, a movable rod, a locking block and an unlocking button;

[0007] The fixed body is fixed to the end of the support beam body, and the locking block and the operating handle are movably connected to the fixed body; the movable rod is installed on the fixed body and can move along a first direction, and the surface of the movable rod has a friction area extending along the first direction; one end of the movable rod is connected to the locking block, and the movable rod is also connected to the operating handle, and the movable rod can be driven by the operating handle to move to a first position along the first direction so that the locking block abuts against the workbench body;

[0008] The locking block is movably mounted on the fixed body, and the locking block can abut against the friction area so that the movable rod is locked when it is in the first position; the unlocking button is movably mounted on the fixed body, one end of the unlocking button is for user operation, and the other end abuts against the locking block, and when the unlocking button is driven by external force, it can drive the locking block to move so that the locking block is out of contact with the friction area.

[0009] In an optional embodiment, the locking structure further includes a sliding block, the sliding block has a through hole, the sliding block is sleeved on the movable rod through the through hole, and there is a gap between the outer wall of the movable rod and the inner wall of the through hole;

[0010] The operating handle is hinged to the fixed body, and the operating handle includes a squeezing end abutting against one side of the sliding block. When the operating handle rotates, the squeezing end can squeeze the sliding block to drive the movable rod to move to the first position.

[0011] In an optional embodiment, the locking structure also includes a first elastic member, which is sleeved on the movable rod and abuts against the sliding block, and is used to reset the sliding block driven by the rotation of the operating handle and simultaneously drive the operating handle to reset.

[0012] In an optional embodiment, the first elastic member is a compression spring, and a travel limit block is provided inside the fixed body. The travel limit block is located at one end of the sliding block along the first direction, and the sliding block abuts against the travel limit block when it is reset under the drive of the first elastic member.

[0013] In an optional embodiment, the locking block has a locking hole, and the locking block is sleeved on the movable rod through the locking hole;

[0014] The locking block is rotatably installed on the fixed body. When the axial direction of the locking hole is along the first direction, the friction force between the inner wall of the locking hole and the friction area is less than a preset value. When the axial direction of the locking hole forms a preset angle with the first direction, the friction force between the inner wall of the locking hole and the friction area is greater than or equal to a preset value.

[0015] In an optional embodiment, the locking structure also includes a second elastic member, which is installed in the fixed body. The second elastic member abuts against one side of the locking block so that when the locking block is not subjected to external force, the axial direction of the locking hole maintains a preset angle with the first direction.

[0016] In an optional embodiment, the unlock button can move from a pop-up position to a pressed position when operated. When the unlock button is in the pop-up position, the axial direction of the locking hole maintains a preset angle with the first direction. When the unlock button is in the pressed position, the axial direction of the locking hole is along the first direction.

[0017] In an optional embodiment, a support block is provided inside the fixed body, the support block abuts against one end of the locking block, and the second elastic member abuts against the other end of the locking block.

[0018] In an optional embodiment, the friction area includes a plurality of saw teeth arranged along the first direction, and when the axial direction of the locking hole maintains a preset angle with the first direction, the corner formed by the inner wall of the locking hole and the end face of the locking block can be stuck between the saw teeth.

[0019] In an optional embodiment, the movable rod is at least partially exposed from the fixed body, and the portion of the movable rod exposed from the fixed body has a marker.

[0020] In an optional embodiment, one end of the support beam body is connected to the locking structure, and the other end is fixed with a hook.

[0021] In a second aspect, an embodiment of the present application provides a workbench, including a workbench main body, and also including the support beam of the first aspect, wherein the support beam is detachably fixed to the workbench main body via the locking structure.

[0022] The support beam and workbench provided in the embodiment of the present application can realize quick locking or unlocking of the support beam body with the workbench body through the locking block, wherein the movement of the locking block is driven by the operating handle and the movable rod, and the locking block is used to lock the locking block in the first position through the friction between the friction area, thereby realizing quick locking of the support beam body and the workbench body; and when the unlocking button is driven by an external force, it can drive the locking block to move so that the locking block is out of contact with the friction area, thereby realizing quick unlocking of the support beam body and the workbench body. Therefore, the support beam and workbench provided in the embodiment of the present application can facilitate users to quickly adjust the position of the support beam and facilitate the adaptation of cutting saws of different models.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A front view of the workbench structure provided in the embodiment of the present application;

[0026] Figure 2 A left view of the workbench structure is provided for the embodiment of the present application;

[0027] Figure 3 for Figure 1 AA section view;

[0028] Figure 4 for Figure 3 A local enlarged view of position B;

[0029] Figure 5 for Figure 4 A local enlarged view of the C position;

[0030] Figure 6 for Figure 5 Schematic diagram of the tilting of the middle locking block and the sliding block;

[0031] Figure 7 A schematic diagram of the state of the operating handle of the locking structure provided in the embodiment of the present application when being operated;

[0032] Figure 8 for Figure 7 A local enlarged view of the D position.

[0033] The reference numerals in the figure are:

[0034] 1. Support beam body;

[0035] 2. Locking structure; 21. Fixed body; 211. Travel limit block; 212. Support block;

[0036] 22. Locking block;

[0037] 23. Operating handle; 231. Extrusion end;

[0038] 24. movable rod; 241. friction area; 242. marker;

[0039] 25, locking block; 251, locking hole; 2511, corner;

[0040] 26. Unlock button;

[0041] 27. Sliding block; 271. Through hole;

[0042] 28. a first elastic member;

[0043] 29. a second elastic member;

[0044] 100. workbench; 101. workbench body;

[0045] 200. Support beam. DETAILED DESCRIPTION

[0046] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0047] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0048] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. 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, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0051] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0052] like Figure 1-Figure 3 As shown, this embodiment provides a workbench 100, including a workbench body 101, and also includes a support beam 200, and the support beam 200 is detachably fixed to the workbench body 101 through a locking structure 2.

[0053] The support beam 200 includes: a support beam body 1 and a locking structure 2. The support beam body 1 is used to be arranged above the workbench body 101 to support tools. One end of the support beam body 1 is detachably fixed to the workbench body 101 through the locking structure 2.

[0054] The locking structure 2 includes: a fixed body 21, a locking block 22, an operating handle 23, a movable rod 24, a locking block 25 and an unlocking button 26. The fixed body 21 is fixed to the end of the support beam body 1, and the locking block 22 and the operating handle 23 are movably connected to the fixed body 21; the movable rod 24 is installed on the fixed body 21 and can move along a first direction, and the surface of the movable rod 24 has a friction area 241 extending along the first direction; one end of the movable rod 24 is connected to the locking block 22, and the movable rod 24 is also connected to the operating handle 23. The movable rod 24 can move to a first position along the first direction under the drive of the operating handle 23, so that the locking block 22 abuts against the workbench body 101. When the locking block 22 abuts against the workbench body 101, the support beam 200 and the workbench body 101 generate an interaction force, so that the support beam 200 is fixed to the workbench body 101.

[0055] The locking block 25 is movably installed on the fixed body 21, and the locking block 25 can abut against the friction area 241 to lock the movable rod 24 when it is in the first position; the unlocking button 26 is movably installed on the fixed body 21, one end of the unlocking button 26 is for the user to operate, and the other end abuts against the locking block 25. When the unlocking button 26 is driven by an external force, it can drive the locking block 25 to move so that the locking block 25 is out of contact with the friction area 241.

[0056] In this embodiment, the support beam body 1 can be used to support the base of the cutting tool. When in use, the support beam body 1 can be set alone. When set alone, it can cooperate with another common support beam to support the cutting tool. Figure 1 The two support beam bodies 1 shown are fixed above the workbench body 101 by locking structures 2, and can be used to support the two sides of the base of the cutting tool respectively so that the cutting tool can maintain balance. When the base width of the cutting tool used is too large, the interval between the two support beam bodies 1 can be increased, and vice versa, the interval between the two support beam bodies 1 can be reduced to adapt to different types of cutting tools. It can be understood that according to actual needs, the number of support beams 200 installed on the workbench body 101 is not limited to one or two, and more can be set as needed.

[0057] The fixed body 21 is the main body of the locking structure 2, and other parts of the locking structure 2 are installed therein. The locking block 22 is used to contact and squeeze the workbench body 101, and fix the support beam 200 to the workbench body 101 through the generated force. The operating handle 23 is a component that can be operated by the user. The movable rod 24 plays a transmission role, and is mainly used to transmit the force output by the operating handle 23 to the locking block 22, so that the locking block 22 squeezes the workbench body 101. The locking block 25 is used to lock the locking block 22 in an extruded state, so that the locking block 22 maintains the interaction force with the workbench body 101, that is, keeps the support beam 200 fixed to the workbench body 101, and the unlocking button 26 is a component specifically for unlocking the locking block 25.

[0058] The support beam 200 and the workbench 100 provided in the embodiment of the present application can realize the rapid locking or unlocking of the support beam body 1 with the workbench body 101 through the locking block 22, wherein the movement of the locking block 22 is driven by the operating handle 23 and the movable rod 24, and the locking block 25 is used to lock the locking block 22 in the first position through the friction between the friction area 241, so as to realize the rapid locking of the support beam body 1 and the workbench body 101; and when the unlocking button 26 is driven by an external force, it can drive the locking block 25 to move so that the locking block 25 is out of contact with the friction area 241, so as to realize the rapid unlocking of the support beam body 1 and the workbench body 101. Therefore, the support beam 200 and the workbench 100 provided in the embodiment of the present application can facilitate the user to quickly adjust the position of the support beam 200, and facilitate the adaptation of different models of cutting saws.

[0059] In an optional embodiment, if Figure 4-Figure 6 As shown, the locking structure 2 also includes a sliding block 27, the sliding block 27 has a through hole 271, the sliding block 27 is sleeved on the movable rod 24 through the through hole 271, and there is a gap between the outer wall of the movable rod 24 and the inner wall of the through hole 271; the operating handle 23 is hinged to the fixed body 21, and the operating handle 23 includes an extrusion end 231 abutting against one side of the sliding block 27. When the operating handle 23 rotates, the extrusion end 231 can squeeze the sliding block 27 to drive the movable rod 24 to move to the first position. In this embodiment, the component for transmitting the movable rod 24 is a sliding block 27, and the principle of the sliding block 27 driving the movable rod 24 to move includes the following aspects:

[0060] 1. When the squeezing end 231 rotates, the power of the user operating the operating handle 23 is transmitted to the sliding block 27, causing the sliding block 27 to deflect, forming a Figure 6 The tilted state shown, such as Figure 5 As shown, in this state, the inner wall of the through hole 271 of the sliding block 27 exerts a squeezing force on the outer wall of the movable rod 24 , so there can be a friction force along the first direction between the sliding block 27 and the outer wall of the movable rod 24 .

[0061] 2. As the user operates the operating handle 23 , the sliding block 27 drives the movable rod 24 to move along the first direction through friction, so that the movable rod 24 moves to the first position, so that the locking block 22 abuts against the workbench body 101 .

[0062] In the solution of this embodiment, the sliding block 27 and the movable rod 24 are not directly connected, that is, after the sliding block 27 drives the movable rod 24 to the first position, the sliding block 27 can move independently without affecting the movable rod 24. This is a decoupled connection, which is convenient for subsequent resetting and other operations.

[0063] In an optional embodiment, if Figure 4-Figure 5As shown, the locking structure 2 further includes a first elastic member 28, which is sleeved on the movable rod 24 and abuts against the sliding block 27, and is used to reset the sliding block 27 driven by the rotation of the operating handle 23, and simultaneously drive the operating handle 23 to reset. In this embodiment, the function of the first elastic member 28 is to help the sliding block 27 and the operating handle 23 to automatically reset, and its working principle is as follows Figure 7 , Figure 8 As shown, different from the structure of the extrusion end 231, the first elastic member 28 is sleeved on the movable rod 24, so the extrusion force on the edge of the through hole 271 is uniform, so the sliding block 27 will not occur as Figure 6 The tilted state shown is Figure 8 As shown in the figure, the sliding block 27 is reset along the first direction, and when it is reset, it will squeeze the squeezing end 231, so the operating handle 23 will also be reset in the process. It can be understood that because there is a gap between the outer wall of the movable rod 24 and the inner wall of the through hole 271, the movable rod 24 that has been locked by the locking block 25 will not be driven by the sliding block 27 when the sliding block 27 is reset.

[0064] In an optional embodiment, if Figure 8 As shown, the first elastic member 28 is a compression spring, and the fixed body 21 has a travel limit block 211 inside. The travel limit block 211 is located at one end of the sliding block 27 along the first direction, and the sliding block 27 abuts against the travel limit block 211 when it is reset under the drive of the first elastic member 28. In this embodiment, the function of the travel limit block 211 is to limit the movable distance of the sliding block 27, so that the sliding block 27 is always located on one side of the travel limit block 211 when it is reset, so that the driving distance of the movable rod 24 by the operating handle 23 each time it is operated is consistent.

[0065] In an optional embodiment, if Figure 6 As shown, the locking block 25 has a locking hole 251, and the locking block 25 is sleeved on the movable rod 24 through the locking hole 251; Figure 7 , Figure 8 As shown, the locking block 25 is rotatably mounted on the fixed body 21. When the axial direction of the locking hole 251 is along the first direction, the friction force between the inner wall of the locking hole 251 and the friction area 241 is less than a preset value. Figure 5 , Figure 6As shown, when the axial direction of the locking hole 251 forms a preset angle with the first direction, the friction force between the inner wall of the locking hole 251 and the friction area 241 is greater than or equal to a preset value. In this embodiment, the locking block 25 is rotatably installed, and the principle of its locking is: when rotation occurs, the extrusion conditions between the inner wall of the locking hole 251 and the friction area 241 are different, so the friction force is different. It can be understood that in order to lock the movable rod 24 in the first position, the friction force provided by the locking block 25 must be equal to the pressure of the workbench body 101 on the locking block 22, and the pressure is the preset value of the friction force. When the friction force cannot be provided, the locking block 22 will not be able to maintain contact with the workbench body 101, that is, the movable rod 24 is in an unlocked state.

[0066] In an optional embodiment, if Figure 4-Figure 6 As shown, the locking structure 2 further includes a second elastic member 29, which is installed in the fixed body 21. The second elastic member 29 abuts against one side of the locking block 25 so that when the locking block 25 is not subjected to external force, the axial direction of the locking hole 251 maintains a preset angle with the first direction. In this embodiment, the second elastic member 29 is used to keep the locking block 25 in an inclined state under normal conditions, so as to automatically lock the movable rod 24 when the movable rod 24 reaches the first position, which is convenient for the user to operate. When the user actually uses the locking structure 2, only the operating handle 23 is necessary to operate.

[0067] In an optional embodiment, the unlocking button 26 can move from the pop-up position to the pressed position when operated, such as Figure 4 , Figure 5 As shown, when the unlocking button 26 is in the pop-up position, the axial direction of the locking hole 251 maintains a preset angle with the first direction, such as Figure 7 , Figure 8 As shown, when the unlock button 26 is in the pressed position, the axial direction of the locking hole 251 is along the first direction. In this embodiment, the function of the unlock button 26 is to squeeze the locking block 25 so that the locking block 25 is subjected to force. Under normal conditions, the locking block 25 can keep locking the movable rod 24 due to the action of the second elastic member 29, and the unlock button 26 can force the locking block 25 to rotate so that the locking block 25 no longer locks the movable rod 24, thus completing the unlocking operation. It can be understood that when the user no longer operates the unlock button 26, in addition to the locking block 25 being reset under the action of the second elastic member 29, the unlock button 26 abutting against it will also be reset under the indirect action of the second elastic member 29 and return to the pop-up position.

[0068] In an optional embodiment, if Figure 5As shown, the interior of the fixed body 21 has a support block 212, the support block 212 abuts against one end of the locking block 25, and the second elastic member 29 abuts against the other end of the locking block 25. In this embodiment, the support block 212 can be used as a support point to prevent the locking block 25 from moving due to the reaction force of the movable rod 24 along the first direction when it contacts the friction area 241. The second elastic member 29 and the support block 212 are respectively arranged at both ends of the locking block 25 so that the locking block 25 can easily generate a rotational activity.

[0069] In an optional embodiment, if Figure 5 , Figure 6 As shown, the friction area 241 includes a plurality of saw teeth arranged along the first direction. When the axial direction of the locking hole 251 maintains a preset angle with the first direction, the corner 2511 formed by the inner wall of the locking hole 251 and the end face of the locking block 25 can be inserted between the saw teeth. In this embodiment, the friction area 241 is provided with saw teeth arranged along the first direction, which can significantly increase the friction between the corner 2511 and the friction area 241, so that the friction provided by the locking block 25 to the movable rod 24 can easily reach the preset value. It can be understood that the structure of the friction area 241 is not limited to saw teeth, and can also be replaced by structures such as surface frosting, anti-slip textures, or the locking block 25 and the movable rod 24 themselves are made of materials with a high friction coefficient.

[0070] like Figure 5 As shown, in this embodiment, the corner 2511 is 90 degrees. When the axial direction of the locking hole 251 maintains a preset angle with the first direction, the inner wall of the locking hole 251 forms an angle less than 30 degrees with the first direction, and the end surface of the locking block 25 forms an angle greater than 60 degrees with the first direction. Therefore, when the movable rod 24 moves along the first direction, it moves toward the direction close to the first position ( Figure 5 When the movable rod 24 moves to the left in the middle of the first position, the blocking effect of the saw teeth by the corner 2511 is weak, and the movable rod 24 moves away from the first position ( Figure 5 When the movable rod 24 moves to the right (from the center), the sawtooth is blocked by the corner 2511, so when the user operates the operating handle 23, the movable rod 24 can move to the first position along the first direction, so that the locking block 22 presses the workbench body 101. On the contrary, the movable rod 24 cannot move away from the first position along the first direction due to the reaction force of the workbench body 101, so that the movable rod 24 is locked. It can be understood that the corner 2511 is not limited to being designed as a 90-degree angle, and it is only necessary to ensure that the blocking effects of the end face of the locking block 25 and the inner wall of the locking hole 251 on the sawtooth in the positive and reverse directions along the first direction are inconsistent.

[0071] In an optional embodiment, if Figure 4 , Figure 7As shown, the movable rod 24 is at least partially exposed from the fixed body 21, and the portion of the movable rod 24 exposed from the fixed body 21 has a marker 242. In this embodiment, the setting of the marker 242 can facilitate the user to observe whether the movable rod 24 located in the fixed body 21 is active and whether it reaches the first position normally, so as to avoid failure to detect when the locking fails.

[0072] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present application and do not limit the scope of protection of the patent of this application.

Claims

1. A support beam, characterized in that: include: A support beam body (1) and a locking structure (2), wherein the support beam body (1) is used to be arranged above a workbench body (101) to support a tool, and at least one end of the support beam body (1) is detachably fixed to the workbench body (101) via the locking structure (2); The locking structure (2) comprises: a fixed body (21), a locking block (22), an operating handle (23), a movable rod (24), a locking block (25) and an unlocking button (26); The fixed body (21) is fixed to the end of the support beam body (1), and the locking block (22) and the operating handle (23) are movably connected to the fixed body (21); the movable rod (24) is installed on the fixed body (21) and can move along a first direction, and the surface of the movable rod (24) has a friction area (241) extending along the first direction; one end of the movable rod (24) is connected to the locking block (22), and the movable rod (24) is also connected to the operating handle (23), and the movable rod (24) can be driven by the operating handle (23) to move along the first direction to a first position, so that the locking block (22) abuts against the workbench body (101); The locking block (25) is movably mounted on the fixed body (21), and the locking block (25) can abut against the friction area (241) so that the movable rod (24) is locked when it is located at the first position; the unlocking button (26) is movably mounted on the fixed body (21), one end of the unlocking button (26) is for user operation, and the other end abuts against the locking block (25), and when the unlocking button (26) is driven by an external force, it can drive the locking block (25) to move so that the locking block (25) is out of contact with the friction area (241).

2. The support beam according to claim 1, characterized in that: The locking structure (2) further comprises a sliding block (27), wherein the sliding block (27) has a through hole (271), and the sliding block (27) is sleeved on the movable rod (24) through the through hole (271), and a gap exists between the outer wall of the movable rod (24) and the inner wall of the through hole (271); The operating handle (23) is hinged to the fixed body (21), and comprises a squeezing end (231) abutting against one side of the sliding block (27). When the operating handle (23) rotates, the squeezing end (231) can squeeze the sliding block (27) to drive the movable rod (24) to move toward the first position.

3. The support beam according to claim 2, characterized in that: The locking structure (2) further comprises a first elastic member (28), which is sleeved on the movable rod (24) and abuts against the sliding block (27) to reset the sliding block (27) driven by the rotation of the operating handle (23) and simultaneously drive the operating handle (23) to reset.

4. The support beam according to claim 3, characterized in that: The first elastic member (28) is a compression spring. The fixed body (21) has a travel limit block (211) inside. The travel limit block (211) is located at one end of the sliding block (27) along the first direction. The sliding block (27) abuts against the travel limit block (211) when it is reset under the drive of the first elastic member (28).

5. The support beam according to claim 1, characterized in that: The locking block (25) has a locking hole (251), and the locking block (25) is sleeved on the movable rod (24) through the locking hole (251); The locking block (25) is rotatably mounted on the fixed body (21); when the axial direction of the locking hole (251) is along the first direction, the friction force between the inner wall of the locking hole (251) and the friction area (241) is less than a preset value; when the axial direction of the locking hole (251) forms a preset angle with the first direction, the friction force between the inner wall of the locking hole (251) and the friction area (241) is greater than or equal to a preset value.

6. The support beam according to claim 5, characterized in that: The locking structure (2) further comprises a second elastic member (29), wherein the second elastic member (29) is mounted in the fixed body (21), and the second elastic member (29) abuts against one side of the locking block (25) so that when the locking block (25) is not subjected to external force, the axial direction of the locking hole (251) maintains a preset angle with the first direction.

7. The support beam according to claim 6, characterized in that The unlock button (26) can move from a pop-up position to a pressed position when operated; when the unlock button (26) is in the pop-up position, the axial direction of the locking hole (251) maintains a preset angle with the first direction; when the unlock button (26) is in the pressed position, the axial direction of the locking hole (251) is along the first direction.

8. The support beam according to claim 6, characterized in that The fixing body (21) has a support block (212) inside, the support block (212) abuts against one end of the locking block (25), and the second elastic member (29) abuts against the other end of the locking block (25).

9. The support beam according to any one of claims 5 to 8, characterized in that: The friction area (241) comprises a plurality of saw teeth arranged along the first direction, and when the axial direction of the locking hole (251) maintains a preset angle with the first direction, a corner (2511) formed by an inner wall of the locking hole (251) and an end face of the locking block (25) can be inserted between the saw teeth.

10. The support beam according to any one of claims 1 to 8, characterized in that: The movable rod (24) is at least partially exposed outside the fixed body (21), and the portion of the movable rod (24) exposed outside the fixed body (21) has a marker (242).

11. The support beam according to any one of claims 1 to 8, characterized in that: One end of the support beam body (1) is connected to the locking structure (2), and the other end is fixed with a hook (3).

12. A workbench, characterized in that: It comprises a workbench main body (101), and also comprises the support beam (200) according to any one of claims 1 to 12, wherein the support beam (200) is detachably fixed to the workbench main body (101) via the locking structure (2).

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