Clamping mechanism and projector mounting rack

Abstract

The clamping mechanism comprises a clamping assembly, the clamping assembly comprises a round shell and a plurality of clamping pieces symmetrically arranged on the side edge of the round shell, each clamping piece comprises a sleeve rod and a clamping rod, each clamping rod is arranged in the corresponding sleeve rod in a sliding mode, one end of each sleeve rod is connected with the round shell and communicated with the round shell, and the other end of each sleeve rod is communicated with the round shell. A linkage piece is arranged in the round shell, one ends of the clamping rods of the multiple clamping pieces are connected with the linkage piece, and synchronous opening and closing of the clamping rods are achieved through the linkage piece for clamping. The linkage piece of the clamping mechanism is matched with the clamping piece, so that the clamping rods of the clamping piece can be synchronously opened and closed to clamp the projector, when the projector breaks down, only the clamping rods need to be opened to take down the projector for troubleshooting, the projector is convenient to disassemble and assemble, the defects existing in existing bolt installation are avoided, and in addition, the working efficiency is improved. The clamping mechanism and the projector are fixed on the wall top through the suspension rod and the mounting disc, the angle of the projector can be adjusted left and right and up and down, and the projector is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of projector installation, in particular to a clamping mechanism and a projector installation frame. Background Art

[0002] Many hydropower stations in China have experienced personnel mistakenly entering the turbine rotation area, resulting in unplanned equipment shutdowns or personal injuries. This situation is often related to personnel inattention or entering the turbine crank arm area by walking into the wrong car room. During unit operation, if there are workers working near the crank arm or relay, they may be pinched and injured. Therefore, to prevent personnel from walking into the wrong car room or mistakenly entering the turbine crank arm area, a projector is installed in the water wheel room to project warning words on the turbine main shaft to remind personnel that they have entered the turbine rotation area.

[0003] Existing projector mounting methods generally use multiple sets of bolts to connect and fix the mounting bracket, and then fix the mounting bracket to the top of the wall. If the projector malfunctions and needs to be disassembled for maintenance, it is extremely inconvenient to remove and install the bolts because the projector is hung at a high position indoors, which is not conducive to projector fault maintenance. Therefore, a clamping mechanism and a projector mounting bracket are proposed to solve the above problem. Utility Model Content

[0004] Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above-mentioned existing technical problems, the present utility model is proposed.

[0006] The utility model aims to provide a clamping mechanism and a projector mounting bracket, which aims to solve the problem of projector clamping.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a clamping mechanism, which includes a clamping assembly, including a circular shell and a plurality of clamping members symmetrically arranged on the side of the circular shell, the clamping member including a sleeve rod and a clamping rod, the clamping rod is slidably arranged in the sleeve rod, one end of the sleeve rod is connected to the circular shell and communicated with it, a linkage member is provided in the circular shell, one end of the clamping rod of the plurality of clamping members is connected to the linkage member, and the clamping rod is synchronously opened and closed for clamping through the linkage member.

[0008] As a preferred solution of the clamping mechanism of the present invention, wherein: the number of the clamping parts is two or four, the bottom of the sleeve rod is flush with the bottom of the round shell, the clamping rod includes a straight rod portion and a hook rod portion of an integrated structure, and the straight rod portion of the clamping rod is located inside the sleeve rod.

[0009] As a preferred solution of the clamping mechanism of the present invention, when there are two clamping members, the clamping members are symmetrically arranged on both sides of the circular shell;

[0010] When the number of the clamping members is four, the clamping members are symmetrically arranged at the four corners of the circular shell.

[0011] As a preferred solution of the clamping mechanism of the present invention, the linkage part includes a rotating shaft, a driving tooth arranged on the rotating shaft and a plurality of racks surrounding the driving tooth in a clockwise direction, the plurality of racks are evenly spaced from bottom to top, and the plurality of racks are all engaged with the driving tooth.

[0012] As a preferred solution of the clamping mechanism of the present invention, the number of the racks is the same as the number of the clamping rods, and one end of the rack is connected to one end of the clamping rod.

[0013] As a preferred solution of the clamping mechanism of the present invention, the driving tooth is flush with one end of the rotating shaft, the driving tooth on the rotating shaft is located inside the circular shell, and the other end of the rotating shaft passes through the top of the circular shell.

[0014] As a preferred solution of the clamping mechanism of the present invention, a locking groove is provided at the bottom of the circular shell, and the structure of the locking groove matches the structure formed by the combination of the rotating shaft and the driving teeth.

[0015] As a preferred solution of the clamping mechanism of the present invention, wherein: a rotating handle is provided at one end of the rotating shaft extending out of the circular shell, and connecting rods are provided on both sides of the rotating shaft at the top of the circular shell.

[0016] The beneficial effect of the clamping mechanism of the utility model is that the clamping rod of the clamping member is synchronously opened and closed to clamp the projector by rotating the rotating shaft of the linkage member, so as to facilitate the disassembly and assembly of the projector.

[0017] Another object of the present invention is to provide a projector mounting bracket, which aims to solve the problem that the projector is hung at a high position indoors, and it is extremely inconvenient to remove and install bolts, which is not conducive to troubleshooting the projector.

[0018] In order to solve the above technical problems, the present invention also provides the following technical solutions: a projector mounting bracket, which includes a clamping mechanism; and an installation assembly, including a hanging rod and a mounting plate, one end of the hanging rod is rotatably connected to the mounting plate, and the other end of the hanging rod is rotatably connected to the connecting rod at the top of the circular shell.

[0019] As a preferred solution of the projector mounting bracket of the present invention, one end of the suspension rod passes through the mounting plate, and the suspension rod is provided with a clamping ring on both sides of the mounting plate to form a rotatable connection between the suspension rod and the mounting plate;

[0020] The other end of the suspension rod is placed between the two connecting rods, and a pin shaft passes through the two connecting rods and the suspension rod to form a rotational connection between the suspension rod and the connecting rod. A knob is provided at one end of the pin shaft, and the other end of the pin shaft is threadedly connected to the connecting rod.

[0021] The beneficial effects of the projector mounting bracket of the present invention are as follows: the linkage member of the clamping mechanism cooperates with the clamping member, so that the clamping rod of the clamping member can synchronously open and close to clamp the projector. When the projector fails, it is only necessary to open the clamping rod to remove the projector for fault inspection and repair. The projector is easy to disassemble and assemble, avoiding the disadvantages of existing bolt installation. Moreover, the clamping mechanism and the projector are fixed to the top of the wall by the hanging rod and the mounting plate. The angle of the projector can be adjusted left and right and up and down, making it easy to use the projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall structure of the buffer mechanism of the utility model.

[0024] Figure 2 It is a schematic diagram of the internal structure of the circular shell of the utility model.

[0025] Figure 3 It is a schematic diagram of the local structure of the circular shell of the utility model.

[0026] Figure 4 This is a schematic diagram of the overall structure of the projector mounting bracket of the present utility model.

[0027] Figure 5 This is a structural diagram of the installation assembly of the utility model. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figures 1 to 3 , which is the first embodiment of the present utility model, provides a clamping mechanism, including a clamping assembly 100, including a circular shell 101 and a plurality of clamping members 102 symmetrically arranged on the side of the circular shell 101, the clamping member 102 includes a sleeve rod 102a and a clamping rod 102b, the clamping rod 102b is slidably arranged in the sleeve rod 102a, one end of the sleeve rod 102a is connected to the circular shell 101 and communicated with it, a linkage member 103 is provided in the circular shell 101, one end of the clamping rod 102b of the plurality of clamping members 102 is connected to the linkage member 103, and the linkage member 103 is used to realize the synchronous opening and closing of the clamping rod 102b for clamping.

[0033] Furthermore, the number of the clamping members 102 is two or four. The bottom of the sleeve rod 102a is flush with the bottom of the round shell 101. The clamping rod 102b includes a straight rod portion and a hook rod portion of an integrated structure. The straight rod portion of the clamping rod 102b is located inside the sleeve rod 102a, and the hook rod portion of the clamping rod 102b is used to engage with the projector.

[0034] It should be noted that when the number of the clamping members 102 is two, the clamping members 102 are symmetrically arranged on both sides of the circular shell 101. At this time, the clamping members 102 can be clamped on both sides of the projector; when the number of the clamping members 102 is four, the clamping members 102 are symmetrically arranged at the four corners of the circular shell 101. At this time, the holders can be clamped at the four corners of the projector. In specific implementation, the number of the clamping members 102 is preferably four, and the structure clamped at the four corners of the projector is more stable.

[0035] When in use, the synchronous opening of the clamping rod 102b is controlled by the linkage 103, the projector is placed in the clamping rod 102b, and then the synchronous tightening of the clamping rod 102b is controlled to clamp the clamping rod 102b at the four corners of the projector, thereby achieving the purpose of clamping and installing the projector. In summary, this design realizes the synchronous opening and closing of the clamping rod 102b to clamp the projector through the linkage 103, which facilitates the disassembly and assembly of the projector.

[0036] Example 2

[0037] Reference Figures 1 to 3 , which is the second embodiment of the present utility model, includes a clamping assembly 100, including a circular shell 101 and a plurality of clamping members 102 symmetrically arranged on the side of the circular shell 101, the clamping member 102 includes a sleeve rod 102a and a clamping rod 102b, the clamping rod 102b is slidably arranged in the sleeve rod 102a, one end of the sleeve rod 102a is connected to the circular shell 101 and communicated with it, a linkage member 103 is provided in the circular shell 101, one end of the clamping rod 102b of the plurality of clamping members 102 is connected to the linkage member 103, and the linkage member 103 is used to realize the synchronous opening and closing of the clamping rod 102b for clamping.

[0038] Furthermore, the number of the clamping members 102 is two or four. The bottom of the sleeve rod 102a is flush with the bottom of the round shell 101. The clamping rod 102b includes a straight rod portion and a hook rod portion of an integrated structure. The straight rod portion of the clamping rod 102b is located inside the sleeve rod 102a, and the hook rod portion of the clamping rod 102b is used to engage with the projector.

[0039] It should be noted that when the number of the clamping members 102 is two, the clamping members 102 are symmetrically arranged on both sides of the circular shell 101. At this time, the clamping members 102 can be clamped on both sides of the projector; when the number of the clamping members 102 is four, the clamping members 102 are symmetrically arranged at the four corners of the circular shell 101. At this time, the holders can be clamped at the four corners of the projector. In specific implementation, the number of the clamping members 102 is preferably four, and the structure clamped at the four corners of the projector is more stable.

[0040] Furthermore, the linkage member 103 includes a rotating shaft 103a, a driving tooth 103b arranged around the rotating shaft 103a, and a plurality of racks 103c surrounding the driving tooth 103b in a clockwise direction. The plurality of racks 103c are evenly spaced from bottom to top, and the plurality of racks 103c are all engaged with the driving tooth 103b.

[0041] It should be noted that the number of racks 103c is the same as that of the clamping rod 102b, and one end of the rack 103c is connected to one end of the clamping rod 102b. Specifically, the number of racks 103c is also two or four. When the number of racks 103c is two, the two racks 103c are located on both sides of the driving tooth 103b, and the two racks 103c are respectively connected to the two clamping rods 102b; when the number of racks 103c is four, the four racks 103c are evenly spaced from bottom to top, the two racks 103c on the lower layer are located on both sides of the lower part of the driving tooth 103b, and the two racks 103c on the upper layer are located on both sides of the upper part of the driving tooth 103b. The two groups of racks 103c cross to form an X structure, and the four racks 103c are respectively connected to the four clamping rods 102b;

[0042] The driving tooth 103b is flush with one end of the rotating shaft 103a. The driving tooth 103b on the rotating shaft 103a is located inside the circular shell 101. The other end of the rotating shaft 103a extends through the top of the circular shell 101. Specifically, a rotating handle 103d is provided at one end of the rotating shaft 103a extending from the circular shell 101. Connecting rods 104 are provided on both sides of the rotating shaft 103a at the top of the circular shell 101.

[0043] A locking groove 101a is provided at the bottom of the circular shell 101. The structure of the locking groove 101a cooperates with the structure formed by the rotating shaft 103a and the driving tooth 103b, so that the rotating shaft 103a and the driving tooth 103b can be inserted into the locking groove 101a to limit the rotation of the driving tooth 103b and lock it. The lock is released when it moves out of the locking groove 101a.

[0044] When in use, pull the handle 103d to move the driving tooth 103b on the shaft 103a out of the locking groove 101a to release the lock, and then turn the handle 103d to make the shaft 103a drive the driving tooth 103b to rotate. The driving tooth 103b drives the four racks 103c and the four clamping rods 102b to move linearly and synchronously, so that the clamping rods 102b can be opened and closed synchronously to clamp the projector, so as to achieve the purpose of clamping and installing the projector. In summary, this design realizes the synchronous opening and closing of the clamping rod 102b to clamp the projector through the linkage part 103, which facilitates the disassembly and assembly of the projector.

[0045] Example 3

[0046] Reference Figures 4 and 5 , which is the third embodiment of the present utility model, further provides a projector mounting bracket, including a clamping mechanism, and, including a mounting assembly 200, including a hanging rod 201 and a mounting plate 202, one end of the hanging rod 201 is rotatably connected to the mounting plate 202, and the other end of the hanging rod 201 is rotatably connected to the connecting rod 104 at the top of the circular shell 101.

[0047] Furthermore, one end of the suspension rod 201 passes through the mounting plate 202, and a clamping ring 203 is provided on both sides of the suspension rod 201 on the mounting plate 202 to form a rotatable connection between the suspension rod 201 and the mounting plate 202, so that the suspension rod 201 can rotate, thereby allowing the projector in the clamping mechanism to rotate left and right to adjust the angle;

[0048] The other end of the suspension rod 201 is placed between the two connecting rods 104, and a pin 204 passes through the two connecting rods 104 and the suspension rod 201 to form a rotational connection between the suspension rod 201 and the connecting rod 104. A knob 205 is provided at one end of the pin 204, and the other end of the pin 204 is threadedly connected to the connecting rod 104, so that the projector in the clamping mechanism can be flipped up and down to adjust the angle;

[0049] It should be noted that a through hole is provided on one connecting rod 104 and the hanging rod 201, a threaded hole is provided on the other connecting rod 104, and a thread is provided on the end of the pin 204 away from the knob 205. The pin 204 is inserted through the through hole of one connecting rod 104 and the hanging rod 201 and then threadedly connected to the threaded hole on the other connecting rod 104.

[0050] In summary, this design cooperates with the clamping member 102 through the linkage member 103 of the clamping mechanism, so that the clamping rod 102b of the clamping member 102 can synchronously open and close to clamp the projector. Moreover, the clamping mechanism and the projector are fixed to the top of the wall through the hanging rod 201 and the mounting plate 202, and the angle of the projector can be adjusted left and right and up and down.

[0051] A projector is used to project warning words on the turbine main shaft in the compartment to remind staff that they have entered the turbine rotation area. Microwave radar can also be used to monitor whether there are people approaching and issue corresponding voice warnings. Through visual and auditory technical measures, staff are reminded to avoid people walking into the wrong compartment or mistakenly entering the turbine arm area.

[0052] Specifically, the microwave radar, projector, and voice player are connected in series in sequence, the microwave radar is connected to the positive pole of the power supply, the voice player is connected to the negative pole of the power supply, the switch is connected in parallel with the microwave radar and projector, and the PLC controller is connected in parallel with the microwave radar.

[0053] The projector has a lettering lens with the following words on it: "In Operation", "Under Maintenance", and "Unit Number". The projector is used to project the words on the lettering lens onto the main shaft of the turbine in the waterwheel room as an image warning, and upload the projection signal corresponding to the words to the PLC controller in real time.

[0054] During specific implementation, the staff adjusts the projection content of the projector according to the operating status of the turbine. It can be displayed on the main shaft of the turbine to indicate whether the turbine is in operation or under maintenance, and use images to warn staff near the waterwheel room.

[0055] The microwave radar is used to monitor people approaching the waterwheel room and send a warning activation signal to the PLC controller. After receiving the warning activation signal, the PLC controller sends an alarm signal to the voice player.

[0056] The PLC controller includes automatic alarm control strategy and manual alarm control strategy;

[0057] The automatic alarm control strategy is that the PLC controller automatically controls the alarm content of the voice player according to the projection signal;

[0058] The manual alarm control strategy is that the PLC controller cooperates with the switch to switch the automatic alarm to the manual alarm. The manual alarm is to manually control the alarm content of the voice player.

[0059] The voice player is used to receive the alarm signal from the PLC controller. According to the alarm signal, the voice player broadcasts the corresponding alarm content as a voice warning. It should be noted that the editing control of the PLC controller can be implemented using existing technology.

[0060] Specifically, when the projection content is "under maintenance", when personnel enter the waterwheel room, the voice player will broadcast the corresponding announcement according to the projection content: "Please note that unit XX is under maintenance. Please enter the crank arm area for work. Please pay attention to safety."

[0061] When the projection content is "Operating" or "Unit Number", when personnel enter the waterwheel room, the voice player will broadcast the corresponding announcement according to the projection content: "Please note that unit number is an operating unit. Personnel are not allowed to work in the crank arm or relay area. If necessary, please contact the operator."

[0062] The voice broadcast can set the broadcast cycle and duration according to actual work needs, and the broadcast time period can be set according to the length of on-site working time to ensure full coverage of voice reminders. When switching to manual alarm, you can manually choose to broadcast the corresponding alarm content, and you can also record human voices on-site for broadcasting. For example, when opening / closing guide vanes, turning tests, and other operations on-site, it is necessary to broadcast in advance on the voice reminder device of the corresponding unit section: "Please note that a certain unit is about to perform guide vane operation. Please evacuate the personnel in the water truck room of a certain unit to a safe area."

[0063] The steps for implementing the on-site voice warning reminder are as follows:

[0064] S0: Start;

[0065] S1: Microwave radar detects a person approaching the waterwheel room and enters S2;

[0066] S2: Determine whether the manual voice alarm is working, if not, go to S3, if yes, go to S6;

[0067] S3: trigger automatic voice alarm and enter S4;

[0068] S4: Read the projection content of the projector and enter S5;

[0069] S5: Select the corresponding voice broadcast content according to the projection content and enter S6;

[0070] S6: Output the automatically or manually selected voice broadcast content and enter S7;

[0071] S7: End.

[0072] In summary, using both visual and auditory technical measures to remind staff can effectively prevent people from walking into the wrong compartment or mistakenly entering the turbine arm area.

[0073] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0074] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0075] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A clamping mechanism, characterized in that: include, The clamping assembly (100) comprises a circular shell (101) and a plurality of clamping members (102) symmetrically arranged on the side of the circular shell (101), wherein the clamping member (102) comprises a sleeve rod (102a) and a clamping rod (102b), wherein the clamping rod (102b) is slidably arranged in the sleeve rod (102a), and one end of the sleeve rod (102a) is connected to and communicated with the circular shell (101), and a linkage member (103) is arranged in the circular shell (101), and one end of the clamping rod (102b) of the plurality of clamping members (102) is connected to the linkage member (103), and the clamping rod (102b) is synchronously opened and closed for clamping by means of the linkage member (103).

2. The clamping mechanism according to claim 1, characterized in that: The number of the clamping members (102) is two or four, the bottom of the sleeve rod (102a) is flush with the bottom of the round shell (101), the clamping rod (102b) comprises a straight rod portion and a hook rod portion of an integrated structure, and the straight rod portion of the clamping rod (102b) is located inside the sleeve rod (102a).

3. The clamping mechanism according to claim 2, characterized in that: When the number of the clamping members (102) is two, the clamping members (102) are symmetrically arranged on both sides of the circular shell (101); When the number of the clamping members (102) is four, the clamping members (102) are symmetrically arranged at the four corners of the circular shell (101).

4. The clamping mechanism according to claim 2 or 3, characterized in that: The linkage member (103) comprises a rotating shaft (103a), a driving tooth (103b) arranged in a ring on the rotating shaft (103a), and a plurality of racks (103c) surrounding the driving tooth (103b) in a clockwise direction, wherein the plurality of racks (103c) are evenly spaced from bottom to top, and the plurality of racks (103c) are all meshed with the driving tooth (103b).

5. The clamping mechanism according to claim 4, characterized in that: The number of the racks (103c) is the same as the number of the clamping rods (102b), and one end of the racks (103c) is connected to one end of the clamping rod (102b).

6. The clamping mechanism according to claim 5, characterized in that: The driving tooth (103b) is flush with one end of the rotating shaft (103a), the driving tooth (103b) on the rotating shaft (103a) is located inside the circular shell (101), and the other end of the rotating shaft (103a) passes through the top of the circular shell (101).

7. The clamping mechanism according to claim 6, characterized in that: A locking groove (101a) is provided at the bottom of the circular shell (101), and the structure of the locking groove (101a) matches the structure formed by the combination of the rotating shaft (103a) and the driving tooth (103b).

8. The clamping mechanism according to claim 7, characterized in that: A rotating handle (103d) is provided at one end of the rotating shaft (103a) extending out of the circular shell (101), and connecting rods (104) are provided on both sides of the rotating shaft (103a) at the top of the circular shell (101).

9. A projector mounting bracket, characterized in that: Comprising the clamping mechanism as claimed in any one of claims 1 to 8; as well as, The mounting assembly (200) comprises a hanging rod (201) and a mounting plate (202), wherein one end of the hanging rod (201) is rotatably connected to the mounting plate (202), and the other end of the hanging rod (201) is rotatably connected to a connecting rod (104) at the top of the round shell (101).

10. The projector mounting bracket according to claim 9, characterized in that: One end of the hanging rod (201) passes through the mounting plate (202), and snap rings (203) are provided on both sides of the hanging rod (201) located on the mounting plate (202) to form a rotatable connection between the hanging rod (201) and the mounting plate (202); The other end of the suspension rod (201) is placed between the two connecting rods (104), and a pin shaft (204) passes through the two connecting rods (104) and the suspension rod (201) to form a rotational connection between the suspension rod (201) and the connecting rod (104). A knob (205) is provided at one end of the pin shaft (204), and the other end of the pin shaft (204) is threadedly connected to the connecting rod (104).

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