Assembly-adjustable protective cover and machine tool

Abstract

The utility model discloses an assembly-adjustable protective cover, which realizes adjustable installation of a protective cover body and a seat part through relative rotation of a second installation piece and a first installation piece and a strip-shaped second adjustment hole, so that the relative positions of the protective cover body, the seat part and a tool piece are adjusted, and the protective cover body, the seat part and the tool piece can be matched with one another and do not interfere with one another. And finally fixing, mounting and using.

Description

Technical Field

[0001] The utility model belongs to the field of machine tools, and in particular relates to an assembly adjustable protective cover and a machine tool. Background Art

[0002] A machine tool is a mechanical device used to perform specific work, usually including a seat and a tool part installed on a driving head of the seat. Taking an angle grinder as an example, the angle grinder disclosed in Chinese Patent No. CN201510317689.5 can be referred to, which uses a combination of a gripping part and a reduction gear part as a seat, and a grinding disc installed on the angle grinder body as a tool part, so that the driving motor in the reduction gear part works to drive the grinding disc to rotate at high speed. In addition, in order to ensure the safety of use, a grinding disc cover (protective cover) is usually provided so that the outer periphery of the grinding disc is covered according to the needs to achieve safety of use.

[0003] The installation of a common protective cover relative to a machine tool can refer to the Chinese patent No. CN201720535313.6, which discloses an angle grinder with a dustproof protective cover. A circular hole is opened in the center of the protective cover body and passes through the upper and lower ends of the protective cover body, so that the output end of the angle grinder can be passed through the circular hole, and then the installation is achieved by cooperating with the bearing seat at the output end of the angle grinder through a clamp.

[0004] The problem with the above-mentioned protective cover is that the protective cover is installed with a clamp, and the installation result is unique, that is, after the alignment installation, the relative positions of the seat, the protective cover and the tool part are unique, which makes the production precision requirements of the three relatively high. If any of the three has a production error, it may result in the inability to be aligned with the installation, or even the protective cover may interfere with the work of the tool part, causing damage or danger. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an assembled adjustable protective cover, which realizes the adjustable installation of the protective cover body and the seat through the relative rotation of the second mounting member and the first mounting member and the elongated second adjustment hole, thereby adjusting the relative positions of the protective cover body, the seat and the tool part so that the three can cooperate with each other without interfering with each other, and finally fixedly installed for use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising: a protective cover body, wherein an assembly through-hole is provided on the protective cover body, and an installation side is provided on the protective cover body at one end of the through-hole; a connecting component, wherein the connecting component is provided on the installation side, and the connecting component is used to fix the protective cover body on the seat, and the connecting component comprises a first mounting member, a second mounting member and a second locking member, wherein the first mounting member is provided on the protective cover body, and the first mounting member and the second mounting member are rotatably installed with respect to each other so that the second mounting member rotates closer to or away from the installation side, and the second locking member is used to fix the second mounting member that has been rotated to the first mounting member, and the second mounting member is provided with a second adjustment hole in the form of an elongated strip.

[0007] The utility model is further configured as follows: a second rotating rod is fixedly provided on the first mounting member or the second mounting member, a second insertion hole for the second rotating rod to pass through is provided on the second mounting member or the first mounting member, the second locking member adopts a nut, and the second locking member is threadedly engaged with the second rotating rod to fix the first mounting member and the second mounting member against each other; or, a first hinge hole is provided on the first mounting member, and a second hinge hole is provided on the second mounting member, and the second locking member adopts a bolt and a nut, so that the first mounting member and the second mounting member are rotated together by the bolt passing through the first hinge hole and the second hinge hole, and the first mounting member and the second mounting member are fixed against each other by the nut engaging with the bolt.

[0008] The utility model is further configured as follows: the connection assembly includes a first locking member, the first mounting member is rotatably and / or slidably mounted on the mounting side, and the first locking member is used to fix the first mounting member that has been rotated and / or slidably mounted on the mounting side.

[0009] The utility model is further configured as follows: the first mounting member comprises a first segment body matched with the mounting side and a second segment body matched with the second mounting member, and the first segment body and the second segment body are combined into an L shape.

[0010] The utility model is further configured as follows: a first elongated adjustment hole is penetrated on the first mounting member or the protective cover body, a first threaded hole is provided on the protective cover body or the first mounting member, the first locking member adopts a bolt, the first locking member passes through the first adjustment hole and is threadedly connected with the first threaded hole; or, a first elongated adjustment hole is penetrated on the first mounting member or the protective cover body, a first through hole is penetrated on the protective cover body or the first mounting member, the first locking member adopts a bolt and a nut, so that the bolt passes through the first adjustment hole and the first through hole, and the nut fits with the bolt.

[0011] The utility model is further configured to include: a safety cover, wherein the outer periphery of the protective cover body is provided with a working gap, and a first hinged portion located on one side of the working gap, the safety cover is provided with a second hinged portion hingedly matched with the first hinged portion, and the safety cover rotates relative to the protective cover body to close or open the working gap.

[0012] The utility model is further configured as follows: the safety cover is provided with a limit plate, the installation side is provided with a clamping portion, and when the safety cover closes the working gap, the limit plate is located between the clamping portion and the installation side; and / or, a first card groove and a first card protrusion are provided between the safety cover and the protective cover body, and when the safety cover closes the working gap, the first card groove and the first card protrusion are mutually engaged; and / or, the first hinged part is provided with a first assembly hole, and the second hinged part is provided with a second assembly hole, an assembly bolt and an assembly nut are provided between the first assembly hole and the second assembly hole, the assembly bolt passes through the first assembly hole and the second assembly hole to realize the rotational cooperation of the first hinged part and the second hinged part, and the assembly nut cooperates with the assembly bolt to realize the abutment and fixation of the first hinged part and the second hinged part.

[0013] The utility model is further configured as follows: an opening torsion spring is arranged between the first hinge part and the second hinge part, and the opening torsion spring is used to drive the safety cover to move in a direction away from the working notch.

[0014] By adopting the above technical scheme, when assembling with the seat, the output shaft on the seat passes through the assembly through-hole from top to bottom, and then the tool piece is assembled to the output shaft of the seat, so that the protective cover body is located between the tool piece and the seat, and then the position of the protective cover body is adjusted according to the actual structure, so that the protective cover body, the seat, and the tool piece do not interfere with each other, and then the second mounting piece is adjusted by rotation so that the second adjustment hole can be aligned with the mounting screw hole on the seat, so that the second mounting piece is fixed to the seat through the assembly part, and then the first mounting piece and the second mounting piece are fixed to each other through the second locking piece to ensure the relative fixation of the protective cover body and the seat to complete the installation. The above method can be debugged and assembled according to the specific structural conditions of the protective cover body, the seat, and the tool piece, and the assembly has better adaptability, and the protective cover body and the tool piece do not interfere with each other after assembly, and it is safer to use.

[0015] A machine tool comprises: a seat, on which a mounting screw hole is provided; a tool piece, which is detachably mounted on the output end of the seat; the above-mentioned assembly adjustable protective cover, the assembly through hole for the output end of the seat to pass through; an assembly part, which adopts a bolt, the assembly part passes through a second assembly hole, and cooperates with the mounting screw hole thread to fix the second mounting part on the seat.

[0016] The utility model is further configured as follows: the seat portion adopts a hand-held handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an assembly diagram of an adjustable protective cover in a specific embodiment of the utility model;

[0019] Figure 2 An exploded view of an adjustable protective cover assembled in a specific embodiment of the utility model;

[0020] Figure 3 for Figure 1 A magnified view of middle;

[0021] Figure 4 An exploded view of an adjustable protective cover assembled in a specific embodiment of the utility model;

[0022] Figure 5 It is an assembly diagram of an adjustable protective cover in a specific embodiment of the utility model;

[0023] Figure 6 for Figure 4 A partial enlarged view of

[0024] Figure 7 It is an assembly diagram of a machine tool in a specific embodiment of the utility model;

[0025] Figure 8 An exploded view of a machine tool in a specific embodiment of the utility model;

[0026] Fig. 9 It is an assembly diagram of the seat part in a specific implementation manner of the utility model.

[0027] Labels: 1. Protective cover body; 11. Assembly through hole; 12. Mounting side; 13. First threaded hole; 14. Working notch; 15. First hinged portion; 16. Integrated portion; 17. Bushing; 121. First slot; 151. First assembly hole; 161. Clamp; 162. Second convex; 2. Connecting assembly; 21. First mounting member; 22. Second mounting member; 23. First locking member; 24. Second locking member; 211. Second rotating rod; 212. First section ; 213, second section; 214, first adjustment hole; 221, second adjustment hole; 222, second plug hole; 3, safety cover; 31, second hinge; 32, limit plate; 311, second assembly hole; 321, second slot; 322, first cam; 41, assembly bolt; 42, assembly nut; 43, opening torsion spring; 411, straight handle; 5, seat; 51, output end; 52, mounting screw hole; 6, tool; 7, assembly part; 8, auxiliary handle. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selections and substitutions made by those skilled in the art under the guidance of the present invention shall be deemed to be within the scope of protection claimed by the present invention.

[0029] Embodiment 1:

[0030] like Figure 1-Figure 9 As shown, the utility model discloses an adjustable protective cover, comprising:

[0031] A protective cover body 1, wherein a mounting through hole 11 is vertically provided in the middle of the protective cover body 1, and a mounting side 12 is provided at the upper portion of the protective cover body 1;

[0032] A connecting component 2, wherein the connecting component 2 is arranged on the mounting side 12, and the connecting component 2 is used to fix the protective cover body 1 on the seat. Specifically, the connecting component 2 includes a first mounting member 21, a second mounting member 22 and a second locking member 24. The first mounting member 21 is arranged on the protective cover body 1, and the first mounting member 21 and the second mounting member 22 are mounted to rotate with each other, and the axial direction of the mutual rotation is arranged horizontally to allow the second mounting member 22 to rotate closer to or away from the mounting side 12, and the second locking member 24 is used to fix the second mounting member 22 that has been rotated to the first mounting member 21. In addition, a second adjustment hole 221 in the form of an elongated strip is provided on the second mounting member 22.

[0033] Therefore, when assembling with the seat 5, the output shaft on the seat 5 passes through the assembly through-hole 11 from top to bottom, and then the tool piece 6 is assembled to the output shaft of the seat 5, so that the protective cover body 1 is located between the tool piece 6 and the seat 5, and then the position of the protective cover body 1 is adjusted according to the actual structure, so that the protective cover body 1, the seat 5, and the tool piece 6 do not interfere with each other, and then the second mounting member 22 is adjusted by rotation so that the second adjustment hole 221 can be aligned with the mounting screw hole 52 on the seat 5, so that the second mounting member 22 is fixed to the seat 5 through the assembly member 7, and then the first mounting member 21 and the second mounting member 22 are fixed to each other through the second locking member 24 to ensure the relative fixation of the protective cover body 1 and the seat 5 to complete the installation. The above method can be debugged and assembled according to the specific structural conditions of the protective cover body 1, the seat 5, and the tool piece 6, and the assembly has better adaptability, and the protective cover body 1 and the tool piece 6 do not interfere with each other after assembly, and it is safer to use.

[0034] In addition, the first mounting member 21 in this embodiment is fixedly provided with a second rotating rod 211 by welding, riveting, clamping, etc., and the second mounting member 22 is penetrated by a second insertion hole 222, so that the first mounting member 21 and the second mounting member 22 can be rotated together by the second rotating rod 211 passing through the second insertion hole 222. In addition, the second locking member 24 is a nut, and the second locking member 24 is threadedly engaged with the second rotating rod 211 to fix the first mounting member 21 and the second mounting member 22 against each other.

[0035] Therefore, with the cooperation of the second insertion hole 222 and the second rotating rod 211, the first mounting member 21 and the second mounting member 22 can be flipped relative to each other to adjust the position of the second adjustment hole 221. After the adjustment is completed, the second locking member 24 is threadedly engaged with the second rotating rod 211 so that the second mounting member 22 is pressed onto the first mounting member 21 with high strength for fixed installation.

[0036] In other embodiments, the second rotating rod 211 is disposed on the second mounting member 22 , and the second plug hole 222 is disposed on the first mounting member 21 , which can also achieve the above functions.

[0037] In addition, the connecting component 2 in this embodiment includes a first locking member 23 , the first mounting member 21 can rotate and slide relative to the mounting side 12 , and the first locking member 23 is used to fix the first mounting member 21 that has completed rotation and sliding to the mounting side 12 .

[0038] Therefore, the rotation and sliding of the first mounting member 21 can adjust the position of the second adjustment hole 221 in more dimensions, so that the adjustable adaptability of the mutual installation of the protective cover body 1 and the seat 5 is better, and the adjusted second adjustment hole 221 can be installed better close to the seat 5.

[0039] Specifically, the first mounting member 21 in this embodiment includes a first segment 212 that cooperates with the mounting side 12 and a second segment 213 that cooperates with the second mounting member 22. The first segment 212 and the second segment 213 are combined into an L shape, so that the rotation direction of the first mounting member 21 relative to the mounting side 12 and the rotation direction of the second mounting member 22 relative to the first mounting member 21 can be adjusted by the combination of the L-shaped first segment 212 and the second segment 213, and the overall structure is more concise.

[0040] Preferably, the first mounting member 21 is a stamped and bent integral member.

[0041] Specifically, the first mounting member 21 (first section 212) in this embodiment is vertically penetrated with a first elongated adjustment hole 214, and correspondingly, the protective cover body 1 is provided with a first threaded hole 13, and the first locking member 23 adopts a bolt, so that the first locking member 23 passes through the first adjustment hole 214 and is threadedly connected with the first threaded hole 13, and in a loose state, the first mounting member 21 can be rotated and slidably adjusted by the limiting position of the first locking member 23 and the first adjustment hole 214, and when the first locking member 23 is locked, the first mounting member 21 and the protective cover body 1 are fixed to each other.

[0042] In other embodiments, the first adjustment hole 214 is disposed on the protective cover body 1 , and the first threaded hole 13 is disposed on the first mounting member 21 .

[0043] Preferably, the number of the connection components 2 in this embodiment is 2 groups, so that a plurality of connection components 2 can be installed in cooperation with the seat 5 to achieve a more stable installation.

[0044] In addition, this embodiment also includes a safety cover 3, wherein the outer front end of the protective cover body 1 is provided with a working gap 14 and a first hinged portion 15 located on the right side of the working gap 14, and the safety cover 3 is provided with a second hinged portion 31 hingedly matched with the first hinged portion 15, wherein the safety cover 3 rotates relative to the protective cover body 1 to close or open the working gap 14.

[0045] Therefore, 1. The setting of the working gap 14 allows the working piece to be partially exposed for use in the open state, while other circumferential positions of the working piece are covered by the outer periphery of the protective cover body 1 to improve the safety of use; 2. When the working piece is not in use, the working gap 14 can be closed by the safety cover 3 to prevent the machine tool from accidentally starting and causing the working tool 6 to come into contact with the surrounding area and cause danger; 3. The first hinge part 15 and the second hinge part 31 are rotatably matched to make the safety cover 3 and the protective cover body 1 cooperate more simply, and it is more convenient to open and close the working gap 14.

[0046] The safety cover 3 in this embodiment is provided with a sector-shaped limiting plate 32, which is located above the mounting side 12. Correspondingly, an L-shaped integral part 16 is integrally molded on the mounting side 12, and the upper part of the integral part 16 serves as a clamping part 161, so that when the safety cover 3 closes the working notch 14, the limiting plate 32 is located between the clamping part 161 and the mounting side 12 and is vertically positioned. In addition, a second clamping protrusion 162 in the shape of a semi-cylindrical strip is integrally molded below the clamping part 161, and correspondingly, a second clamping groove 321 is recessed above the limiting plate 32, so that the circumferential rotation is limited by the cooperation of the second clamping protrusion 162 and the second clamping groove 321.

[0047] Among them, a first locking protrusion 322 is clamped at the bottom of the limiting plate 32, and correspondingly, a first locking groove 121 is opened at the top of the installation side 12, so that when the safety cover 3 closes the working gap 14, the first locking groove 121 and the first locking protrusion 322 are mutually engaged to perform circumferential rotation limiting.

[0048] Among them, the first hinged part 15 is provided with a first assembly hole 151 which penetrates vertically, and the second hinged part 31 is provided with a second assembly hole 311 which penetrates vertically, and an assembly bolt 41 and an assembly nut 42 are provided between the first assembly hole 151 and the second assembly hole 311, and the assembly bolt 41 penetrates the first assembly hole 151 and the second assembly hole 311 from top to bottom to realize the rotational cooperation of the first hinged part 15 and the second hinged part 31, and the assembly nut 42 cooperates with the lower part of the assembly bolt 41 to realize the abutment and fixation of the first hinged part 15 and the second hinged part 31.

[0049] Preferably, a straight-shaped handle 411 is provided above the assembly bolt 41 in this embodiment so that the assembly bolt 41 can be rotated and loosened more conveniently. Correspondingly, the assembly nut 42 adopts an external hexagonal nut, and a hexagonal groove of a corresponding shape is provided below the first hinged portion 15, so that the assembly nut 42 is clamped in the hexagonal groove for circumferential rotation limitation, so that the assembly bolt 41 can be rotated to loosen or tighten.

[0050] Preferably, an opening torsion spring 43 is provided between the first hinge part 15 and the second hinge part 31 in this embodiment, and the opening torsion spring 43 is used to drive the safety cover 3 to move away from the working gap 14, so that when the working gap 14 is opened, the safety cover 3 can be more stably kept away from the working gap 14.

[0051] Specifically, the opening torsion spring 43 is penetrated by the assembly bolt 41, and notches are respectively provided on the first hinge part 15 and the second hinge part 31, so that the two ends of the opening torsion spring 43 are connected to the first hinge part 15 and the second hinge part 31 by being clamped in the notches.

[0052] Embodiment 2:

[0053] An assembled adjustable protective cover, whose main structure is the same as that of the first embodiment, except that the first mounting member 21 is fixed to the protective cover body 1 by means of bolts, bonding, integral molding, etc., so that the first mounting member 21 cannot rotate or slide relative to the protective cover body 1.

[0054] Embodiment three:

[0055] An assembled adjustable protective cover, whose main structure is the same as that of the first embodiment, except that the second rotating rod 211 is not provided on the first mounting member 21, and the second plug hole 222 is not provided on the second mounting member 22. The alternative scheme is: the first mounting member 21 is provided with a first hinge hole, the second mounting member 22 is provided with a second hinge hole, and the second locking member 24 is a bolt and a nut, so that the first mounting member 21 and the second mounting member 22 can be rotated together by the bolt passing through the first hinge hole and the second hinge hole, and the first mounting member 21 and the second mounting member 22 can be fixed against each other by the nut cooperating with the bolt.

[0056] Embodiment 4:

[0057] An adjustable protective cover is provided, and its main structure is the same as that of the first embodiment, except that the first threaded hole 13 is not provided, the first threaded hole 13 is replaced by a first through hole, and the first locking member 23 is a bolt and a nut, and is divided into the following two cases:

[0058] In the first one, the first adjustment hole 214 is disposed on the first mounting member 21 , and the first through hole is disposed on the protective cover body 1 .

[0059] In the second method, the first adjustment hole 214 is disposed on the protective cover body 1 , and the first through hole is disposed on the first mounting member 21 .

[0060] The first adjustment hole 214 and the first through hole are penetrated by bolts, and the nuts are matched with the bolts, so that when the bolts and the nuts are loosely matched, the first mounting member 21 can rotate and slide relative to the protective cover body 1, and the first mounting member 21 and the protective cover body 1 are fixed in the tightened state.

[0061] Embodiment five:

[0062] An assembled adjustable protective cover, whose main structure is the same as that of the first embodiment, except that the first adjustment hole 214 is a round hole, so that the first mounting member 21 can only be relatively rotated and mounted on the protective cover body 1 without sliding adjustment.

[0063] Embodiment six:

[0064] An assembled adjustable protective cover, whose main structure is the same as that of the first embodiment, except that a square piece is arranged on the first mounting member 21 or the protective cover body 1, and the square piece is placed in the first adjustment hole 214, so that under the cooperation of the square piece and the first adjustment hole 214, the first mounting member 21 can only slide relatively to the protective cover body 1 and cannot be rotated and adjusted.

[0065] It should be noted that the differences between the various embodiments do not involve superior solutions or inferior solutions, and they need to be determined based on the needs of the adapted products.

[0066] Embodiment seven:

[0067] like Figure 1-Figure 9 As shown, the utility model discloses a machine tool, comprising:

[0068] The seat 5 can be a table top or a hand-held handle as shown in the figure. The output end 51 for rotation output is arranged at the lower side of the front end of the seat 5, and the mounting screw holes 52 are arranged at the left and right sides of the front end of the seat 5;

[0069] Tool piece 6. This embodiment only shows the original sheet-shaped grinding disc as the tool piece 6. Other tool pieces 6 may also be used. The tool piece 6 is passed through the output end 51 of the seat 5 and is tightened and fixed by a nut.

[0070] In the assembly adjustable protective cover described in any one of the first to sixth embodiments, the assembly through hole 11 is provided for the output end 51 of the seat 5 to pass through, and a detachable bushing 17 is usually provided in the assembly through hole 11;

[0071] The number of the assembly parts 7 is 2, corresponding to the number of the mounting screw holes 52 , and specifically bolts are used. The assembly parts 7 penetrate the second assembly holes 311 and are threadedly matched with the mounting screw holes 52 to fix the second mounting part 22 on the seat 5 .

[0072] Therefore, when the seat 5, the tool part 6, and the assembled adjustable protective cover are not installed with each other, the first step is to preliminarily put the protective cover body 1 on the seat 5, so that the output end 51 of the seat 5 is penetrated by the assembly through hole 11 facing downward, and the bushing 17 and the seat 5 cooperate with each other for convenient positioning installation, and then the tool part 6 is assembled to the output end 51 of the seat 5 to confirm whether the protective cover body 1 and the tool part 6 interfere with each other. If no interference occurs, adjust the second adjustment hole 221 and then penetrate the second adjustment hole 221 through the assembly part 7, and the thread cooperates with the installation screw hole 52 to complete the installation. If interference occurs, the bushing 17 can be removed for relative position adjustment or replaced with an appropriate bushing 17 for fixed installation.

[0073] In addition, one of the assembly parts 7 in this embodiment is installed on the auxiliary handle 8, so that the auxiliary handle 8 is simultaneously installed on the seat 5 for functional use.

[0074] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable protective cover, characterized in that: include: A protective cover body (1), wherein an assembly through hole (11) is provided through the protective cover body (1), and an installation side (12) is provided at one end of the protective cover body (1) in the through direction of the assembly through hole (11); A connecting component (2), the connecting component (2) being arranged on the mounting side (12), and being used for fixing the protective cover body (1) on the seat, the connecting component (2) comprising a first mounting member (21), a second mounting member (22) and a second locking member (24), the first mounting member (21) being arranged on the protective cover body (1), the first mounting member (21) and the second mounting member (22) being mounted to rotate relative to each other so that the second mounting member (22) can rotate closer to or away from the mounting side (12), the second locking member (24) being used for fixing the second mounting member (22) which has been rotated to the first mounting member (21), and the second mounting member (22) being provided with a second adjustment hole (221) in the form of an elongated strip.

2. The adjustable protective cover according to claim 1, characterized in that: The first mounting member (21) or the second mounting member (22) is fixedly provided with a second rotating rod (211), the second mounting member (22) or the first mounting member (21) is provided with a second insertion hole (222) for the second rotating rod (211) to pass through, the second locking member (24) is a nut, and the second locking member (24) is threadedly engaged with the second rotating rod (211) to fix the first mounting member (21) and the second mounting member (22) against each other; or, The first mounting member (21) is provided with a first hinge hole, the second mounting member (22) is provided with a second hinge hole, and the second locking member (24) is formed by a bolt and a nut, so that the first mounting member (21) and the second mounting member (22) can be rotated together by the bolt passing through the first hinge hole and the second hinge hole, and the first mounting member (21) and the second mounting member (22) can be fixed against each other by the nut cooperating with the bolt.

3. The adjustable protective cover according to claim 1, characterized in that: The connecting assembly (2) comprises a first locking member (23), the first mounting member (21) is rotationally and / or slidably mounted on the mounting side (12), and the first locking member (23) is used to fix the first mounting member (21) that has completed rotation and / or sliding to the mounting side (12).

4. The adjustable protective cover according to claim 3, characterized in that: The first mounting member (21) comprises a first segment (212) matched with the mounting side (12) and a second segment (213) matched with the second mounting member (22); the first segment (212) and the second segment (213) are combined to form an L shape.

5. The adjustable protective cover according to claim 3, characterized in that: The first mounting member (21) or the protective cover body (1) is provided with a first elongated adjustment hole (214), the protective cover body (1) or the first mounting member (21) is provided with a first threaded hole (13), the first locking member (23) is a bolt, the first locking member (23) is provided with the first adjustment hole (214), and is threadedly connected to the first threaded hole (13); or, the first mounting member (21) or the protective cover body (1) is provided with a first elongated adjustment hole (214), the protective cover body (1) or the first mounting member (21) is provided with a first through hole, the first locking member (23) is provided with a bolt and a nut, so that the bolt passes through the first adjustment hole (214) and the first through hole, and the nut fits the bolt.

6. The adjustable protective cover according to any one of claims 1 to 5, characterized in that: The invention also comprises a safety cover (3), wherein the outer periphery of the protective cover body (1) is provided with a working notch (14) and a first hinged portion (15) located on one side of the working notch (14), and the safety cover (3) is provided with a second hinged portion (31) hingedly matched with the first hinged portion (15), and the safety cover (3) rotates relative to the protective cover body (1) to close or open the working notch (14).

7. The adjustable protective cover according to claim 6, characterized in that: The safety cover (3) is provided with a limit plate (32), the mounting side (12) is provided with a clamping portion (161), and when the safety cover (3) closes the working gap (14), the limit plate (32) is located between the clamping portion (161) and the mounting side (12); and / or, A first locking groove (121) and a first locking protrusion (322) are provided between the safety cover (3) and the protective cover body (1), and when the safety cover (3) closes the working notch (14), the first locking groove (121) and the first locking protrusion (322) are engaged with each other; and / or, The first hinge part (15) is provided with a first assembly hole (151), and the second hinge part (31) is provided with a second assembly hole (311). An assembly bolt (41) and an assembly nut (42) are provided between the first assembly hole (151) and the second assembly hole (311). The assembly bolt (41) passes through the first assembly hole (151) and the second assembly hole (311) to realize the rotational cooperation of the first hinge part (15) and the second hinge part (31), and the assembly nut (42) cooperates with the assembly bolt (41) to realize the abutment and fixation of the first hinge part (15) and the second hinge part (31).

8. The adjustable protective cover according to claim 6, characterized in that: An opening torsion spring (43) is provided between the first hinged portion (15) and the second hinged portion (31), and the opening torsion spring (43) is used to drive the safety cover (3) to move in a direction away from the working notch (14).

9. A machine tool, characterized in that: include: A seat portion (5), wherein the seat portion (5) is provided with a mounting screw hole (52); A tool part (6), wherein the tool part (6) is detachably mounted on an output end (51) of the seat (5); The assembly adjustable protective cover according to any one of claims 1 to 8, wherein the assembly through hole (11) is provided for the output end (51) of the seat portion (5) to pass through; The assembly part (7) is a bolt, the assembly part (7) is provided with a second assembly hole (311) and is threadedly matched with the mounting screw hole (52) to fix the second mounting part (22) on the seat (5).

10. The machine tool according to claim 9, characterized in that: The seat (5) is a hand-held handle.

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