Valve hand wheel lock with anti-theft function

Abstract

The invention relates to the technical field of valve locks, and particularly discloses a valve hand wheel lock with an anti-theft function, comprising: a hanging pipe limiting part comprising a shell and an opening cavity formed in the top surface of the shell, a side opening formed in one side of the shell close to the bottom, and a hanging groove formed in the bottom of the side opening; the valve hand wheel outer cover part comprises a main rod and an insertion block fixed at one end of the main rod; the locking connecting part is used for fixedly connecting the hanging pipe limiting part and the valve hand wheel outer cover part; the lock is simple in structure, convenient to disassemble and assemble, capable of being automatically adjusted according to hand wheels with different diameters, capable of meeting limitation of the hand wheels with the different diameters, high in universality and capable of reducing cost, meanwhile, rotation of the hand wheels can be completely limited, and the problem that a valve rod below the hand wheels can still rotate due to the fact that a traditional lock cannot completely limit the hand wheels is solved; the anti-theft performance is improved to the maximum extent, and unnecessary economic losses are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of valve locks, and in particular to a valve handwheel lock with an anti-theft function. Background Art

[0002] Valve locks are mainly used to lock valves and protect the safety of valve use. Whether valve locks are used or not is related to the importance of safe operation. Some valves are always open, and some valves are always closed. This requires consideration of safety to avoid misoperation. At the same time, it also provides an anti-theft effect;

[0003] The valve locks currently on the market consist of two semicircular ring covers enclosed on the outside of the valve handwheel, and are equipped with locks. At the same time, in order to prevent fit, the diameter of the two semicircular ring covers after enclosing should be slightly larger than the diameter of the handwheel. However, this structure can only cover the outside of the handwheel, which can only ensure that the valve cannot be opened by the handwheel, but the valve stem under the handwheel is still exposed to the outside, and the valve can also be opened by tools, which leads to poor anti-theft effect and difficulty in playing an effective protective role. At the same time, due to the different diameters of the valve handwheel, different specifications of locks need to be equipped according to the diameter of the handwheel, and the versatility is poor. Summary of the invention

[0004] In view of the above problems existing in the existing valve handwheel lock with anti-theft function, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a valve handwheel lock with anti-theft function.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a valve handwheel lock with anti-theft function, comprising:

[0007] The pipe hanging limiting part includes a shell and an opening cavity opened on the top surface of the shell, a side opening at a position close to the bottom of one side of the shell, and a hanging groove is opened at the bottom of the side opening;

[0008] The valve handwheel outer cover part includes a main rod and an insert block fixed to one end of the main rod, a handwheel limiting assembly is fixed to the other end of the main rod, and the insert block is inserted into the opening cavity;

[0009] The locking connection part is used to fix the pipe hanging limiting part and the valve handwheel outer cover part, and comprises a locking rod and a rotating lock assembly located on one side of the locking rod.

[0010] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the pipe hanging restriction part also includes a pipe fitting component, which includes a cavity opened inside the shell and located below the hanging groove, and a trigger member that penetrates the hanging groove is vertically movable inside the cavity, and clamping fitting members are provided on both sides of the trigger member inside the cavity.

[0011] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the trigger member includes a touch plate groove opened at the bottom of the hanging groove and a rectangular frame fixed to the top of the cavity, a touch plate is arranged inside the touch plate groove, a touch rod is fixed to the bottom of the touch plate, the bottom of the touch rod vertically downward penetrates the touch plate groove and the rectangular frame in sequence and is fixed with a pressure block, and a reset spring is sleeved on the outside of the touch rod located in the rectangular frame.

[0012] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the clamping fitting includes an arc-shaped through groove symmetrically opened at the bottom of the hanging groove, a slide symmetrically fixed in the cavity, and a clamping block embedded in the inner side of the hanging groove and located at the upper ends of the two arc-shaped through grooves, the bottoms of the two clamping blocks are fixed with clamping rods, the bottom ends of the two clamping rods respectively pass through the two arc-shaped through grooves and extend into the cavity, and the bottom ends of the two clamping rods are fixed with gears, the gears are rotatably arranged inside the cavity through a rotating shaft, and the upper surfaces of the two slides are slidably connected with racks, and the racks are meshed with the gears.

[0013] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the handwheel limiting assembly includes a semi-circular disk fixed to the end of the main rod, an arc block is fixed at the bottom edge of the semi-circular disk, and a slide groove 1 is opened at the bottom of the semi-circular disk, and a handwheel limiter is slidably connected in the slide groove 1.

[0014] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the handwheel limiter includes a slider and a disc arranged below the slider, the slider slides in a slide groove, and a column is fixed to the bottom of the slider, a limiting cavity is opened inside the column, a gear ring is fixed on the inner side of the limiting cavity near the upper end, and a limiting toothed disc is arranged at the inner bottom of the limiting cavity, a spring is arranged inside the limiting cavity, a connecting rod is fixed at the bottom axis of the limiting toothed disc, the bottom of the connecting rod passes through the column and is fixed to the upper axis of the disc, and the bottom of the disc is slidably connected to three limiting rods distributed in a triangle.

[0015] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the rotary lock assembly includes a fixed seat, the fixed seat is fixed to the inner side of the opening cavity, and a sleeve one is fixed to one side of the fixed seat, a lock disk one is rotatably sleeved on the outside of the sleeve one, a lock disk two is arranged on one side of the lock disk one, a sleeve two is passed through and fixed at the axis of the lock disk two, one side of the sleeve two is inserted into the sleeve one and is rotatably connected to the lock disk one, a lock disk three is arranged on one side of the lock disk two, a rotating rod is passed through and fixed in the lock disk three, one end of the rotating rod passes through the sleeve two and the sleeve one and is rotatably connected to the fixed seat, and the other end of the rotating rod passes through the opening cavity, extends to the outside of the shell and is fixed with a digital disk.

[0016] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, a toggle rod 1 is fixed to one side of the lock disk 1 near the edge, toggle rods 2 are fixed to both sides of the lock disk 2, and toggle rod 3 is fixed to one side of the lock disk 3.

[0017] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the outer sides of the lock disk 1, the lock disk 2 and the lock disk 3 are all provided with notches.

[0018] As a preferred solution of the valve handwheel lock with anti-theft function described in the present invention, the outer side of the locking rod is provided with locking grooves at equal distances in the middle position, and one end of the locking rod is provided with a thread, and the other end of the locking rod is fixed with a knob.

[0019] The beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to assemble and disassemble. It can adjust itself according to handwheels of different diameters to meet the restrictions of handwheels of different diameters. It has strong versatility and reduces costs. At the same time, it can completely limit the rotation of the handwheel, solving the problem that traditional locks cannot completely limit the handwheel, resulting in the valve stem under the handwheel still being able to rotate. It improves the anti-theft performance to the greatest extent and reduces unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 The figure is a schematic diagram of the overall structure of the valve handwheel lock with anti-theft function of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the pipe hanging restriction part of the valve handwheel lock with anti-theft function of the present invention.

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 4 It is a schematic structural diagram of the valve handwheel outer cover part of the valve handwheel lock with anti-theft function of the present invention.

[0025] Figure 5 The present invention is a schematic cross-sectional structural diagram of a handwheel limiter in a valve handwheel lock with an anti-theft function.

[0026] Figure 6 It is a structural schematic diagram of the locking connection part of the valve handwheel lock with anti-theft function of the present invention. DETAILED DESCRIPTION

[0027] 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 in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and 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.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1

[0032] Reference Figure 1 , provides a schematic diagram of the overall structure of a valve handwheel lock with an anti-theft function, such as Figure 1-2 4-5. A valve handwheel lock with anti-theft function, comprising:

[0033] The pipe-hanging limiting part 100 includes a shell 101 and an opening 102 opened on the top surface of the shell 101, a side opening 103 near the bottom of one side of the shell 101, and a hanging groove 104 is opened at the bottom of the side opening 103;

[0034] The valve hand wheel housing 200 includes a main rod 201 and an insert block 202 fixed to one end of the main rod 201, a hand wheel limiting assembly 203 is fixed to the other end of the main rod 201, and the insert block 202 is inserted into the opening 102;

[0035] The locking connection part 300 is used to fix the pipe hanging restriction part 100 and the valve hand wheel outer cover part 200 together, and includes a locking rod 301 and a rotation lock assembly 302 located on one side of the locking rod 301 .

[0036] Furthermore, the handwheel limiting assembly 203 includes a semi-disc 203a fixed to the end of the main rod 201, an arc block 203b is fixed at the bottom edge of the semi-disc 203a, and a slide groove 203c is opened at the bottom of the semi-disc 203a, and a handwheel limiter 203d is slidably connected in the slide groove 203c.

[0037] Furthermore, the hand wheel limiter 203d includes a slider 203d-1 and a disc 203d-2 disposed below the slider 203d-1. The slider 203d-1 slides in the slide groove 203c, and a column 203d-3 is fixed to the bottom of the slider 203d-1. A limiting cavity 203d-4 is provided inside the column 203d-3. A gear ring 203d-5 is fixed to the inner side of the limiting cavity 203d-4 near the upper end. A limiting toothed disc 203d-6 is provided at the inner bottom of the limiting cavity 203d-4, a spring 203d-7 is provided inside the limiting cavity 203d-4, a connecting rod 203d-8 is fixed at the bottom axis of the limiting toothed disc 203d-6, the bottom of the connecting rod 203d-8 passes through the cylinder 203d-3 and is fixed to the upper axis of the disc 203d-2, and the bottom of the disc 203d-2 is slidably connected to three limiting rods 203d-9 distributed in a triangle.

[0038] When in use, according to the angle of the bifurcated support rod inside the valve handwheel, the disc 203d-2 is rotated, and the limiting rod 203d-9 at the bottom thereof is slid, so that the disc 203d-2 is attached to the axis of the handwheel, and the three limiting rods 203d-9 are respectively attached to the sides of the bifurcated support rod of the handwheel to limit the rotation of the handwheel;

[0039] Secondly, pull the main rod 201. After the main rod 201 is pulled, it drives the semi-disc 203a to displace until the arc-shaped block 203b completely fits against the outer side of the handwheel. During this process, since the semi-disc 203a is slidably connected to the handwheel restrictor 203d and the handwheel restrictor 203d is restricted by the handwheel and will not displace synchronously, the restriction of handwheels of different diameters can be achieved.

[0040] Specifically, the upper surface of each tooth of the limiting tooth disc 203d-6 and the lower surface of each tooth of the tooth ring 203d-5 are both set to be triangular prisms 203d-10. When the disc 203d-2 is pushed upward, the connecting rod 203d-8 is also pushed upward to lift the limiting tooth disc 203d-6. The butt-joint surfaces of the teeth between the limiting tooth disc 203d-6 and the outer teeth of the tooth ring 203d-5 are all triangular prisms 203d-10, so that the limiting tooth disc 203d-6 is convenient to be inserted into the tooth ring 203d-5 to form a restriction. At this time, the limiting tooth disc 203d-6 will not rotate, and the three limiting rods 203d-9 at the bottom of the disc 203d-2 are respectively spread out and abutted against the side of the fork rod inside the valve handwheel, so that the rotation of the valve handwheel can be restricted. This method not only controls the rotation of the valve manually, but also can restrict the rotation of the valve stem, and can solve the problem that the traditional valve handwheel lock is only sleeved on the outer side of the handwheel and cannot restrict the rotational force of the valve stem, effectively increasing the anti-theft performance.

[0041] Specifically, one end of the locking rod 301 is provided with a thread, and the other end of the locking rod 301 is fixed with a knob. Corresponding to the middle section of the opening cavity 102 on the outer side of the housing 101, a locking hole is penetrated. There are two locking holes respectively arranged on both sides of the opening cavity 102, and an internal thread matching the threaded section of the locking rod 301 is arranged in one of the locking holes.

[0042] Specifically, the insert block 202 has an inverted "凵" - shaped structure, and a plurality of jacks 204 are equidistantly and vertically opened on both sides of the inverted "凵" - shape. The inner diameter of the jack 204 is adapted to the outer diameter of the locking rod 301.

[0043] After the outer cover part 200 of the valve handwheel is covered on the valve handwheel, take out the hanging pipe restriction part 100, insert the opening 103 into the valve pipe section, and at the same time lift it upward so that the hanging groove 104 hooks the valve pipe. When lifting upward, it is necessary to ensure that the insert block 202 corresponds to the opening cavity 102. When the housing 101 is lifted, the insert block 202 will be inserted into the opening cavity 102. After insertion, press the semi-disc 203a downward so that the outer cover part 200 of the valve handwheel and the hanging pipe restriction part 100 are tightly combined. At the same time, after the semi-disc 203a is pressed, the cylinder 203d-3 will move downward, and at this time, the disc 203d-2 is restricted by the handwheel and will not move downward, so the tooth ring 203d-5 is sleeved on the outside of the limiting tooth disc 203d-6, completing the rotation restriction of the limiting tooth disc 203d-6 and further realizing the rotation restriction of the handwheel.

[0044] Finally, the locking rod 301 is inserted from one of the locking holes into the insertion hole 204 on the insertion block 202, and then screwed into the other locking hole through a thread, thereby completing the locking of the hand wheel.

[0045] Operation process: according to the angle of the bifurcated support rod inside the valve handwheel, rotate the disc 203d-2 and slide the limiting rod 203d-9 at the bottom to fit the disc 203d-2 to the axis of the handwheel. The three limiting rods 203d-9 are respectively attached to the sides of the bifurcated support rod of the handwheel to limit the rotation of the handwheel.

[0046] Secondly, the main rod 201 is pulled, and the main rod 201 drives the semi-circular disc 203a to move until the arc block 203b is completely attached to the outside of the handwheel. In this process, since the semi-circular disc 203a is slidably connected with the handwheel limiter 203d, the handwheel limiter 203d is restricted by the handwheel and will not move synchronously, so the restriction of handwheels of valves with different diameters can be achieved;

[0047] After the valve handwheel outer cover 200 is covered on the valve handwheel, the pipe hanging limiting part 100 is taken out, the opening 103 is inserted into the valve pipe section, and the valve handwheel is lifted upward at the same time, so that the hanging groove 104 hooks the valve pipe. When lifting upward, it is necessary to ensure that the plug block 202 corresponds to the opening cavity 102. When the shell 101 is lifted, the plug block 202 will be inserted into the opening cavity 102. After insertion, the semi-circular disk 203a is pressed downward, so that the valve handwheel outer cover 200 and the pipe hanging limiting part 100 are tightly combined. At the same time, the semi-circular disk 203a will make the cylinder 203d-3 downward after being pressed, and at this time, the disc 203d-2 will not go downward due to the restriction of the handwheel, so the gear ring 203d-5 is sleeved on the outer side of the limiting toothed disk 203d-6 to complete the rotation of the limiting toothed disk 203d-6, and further realize the rotation restriction of the handwheel;

[0048] Finally, the locking rod 301 is inserted from one of the locking holes into the insertion hole 204 on the insertion block 202, and then screwed into the other locking hole through a thread, thereby completing the locking of the hand wheel.

[0049] Example 2

[0050] Reference Figure 3 This embodiment is different from the first embodiment in that: the pipe hanging limiting portion 100 also includes a pipe fitting component 105, the pipe fitting component 105 includes a cavity 105a opened inside the shell 101 and located below the hanging groove 104, and a trigger 105b that penetrates the hanging groove 104 is vertically movable inside the cavity 105a, and clamping fittings 105c are provided on both sides of the trigger 105b inside the cavity 105a.

[0051] Furthermore, the trigger member 105b includes a touch plate groove 105b-1 opened at the bottom of the hanging groove 104 and a rectangular frame 105b-2 fixed at the top of the cavity 105a, a touch plate 105b-3 is arranged inside the touch plate groove 105b-1, a touch rod 105b-4 is fixed to the bottom of the touch plate 105b-3, the bottom of the touch rod 105b-4 vertically penetrates the touch plate groove 105b-1 and the rectangular frame 105b-2 in sequence and is fixed with a pressure block 105b-5, and a return spring 105b-6 is sleeved on the outside of the touch rod 105b-4 located in the rectangular frame 105b-2.

[0052] Specifically, the touch plate 105b-3 is an arc-shaped structure. When the outer shell 101 is lifted upward, the pipe will support the touch plate 105b-3. During the continuous lifting process, the touch plate 105b-3 pushes down the touch rod 105b-4. The outside of the touch rod 105b-4 is located above the reset spring 105b-6 and is sleeved and fixed with a pressure plate. When the touch rod 105b-4 is pressed downward, the pressure plate will drive the reset spring 105b-6 to apply pressure, and at the same time, the pressure block 105b-5 at the bottom of the touch rod 105b-4 moves downward synchronously.

[0053] Furthermore, the clamping fitting 105c includes an arc-shaped through groove 105c-1 symmetrically opened at the bottom of the hanging groove 104, a slide 105c-2 symmetrically fixed in the cavity 105a, and a clamping block 105c-3 embedded in the inner side of the hanging groove 104 and located at the upper ends of the two arc-shaped through grooves 105c-1, and the bottoms of the two clamping blocks 105c-3 are fixed with clamping rods 105c-4, and the two clamping rods 105c- The bottom ends of the two clamping rods 105c-4 extend into the cavity 105a through two arc-shaped through grooves 105c-1, and the bottom ends of the two clamping rods 105c-4 are fixed with gears 105c-5, which are rotatably arranged inside the cavity 105a through a rotating shaft 105c-6, and the upper surfaces of the two slides 105c-2 are slidably connected with racks 105c-7, which mesh with the gears 105c-5.

[0054] Specifically, a groove is provided on the upper surface of the slide 105c-2, a guide rod is fixed in the groove, a sliding sleeve on the guide rod is provided with a sliding sleeve fixedly connected to the rack 105c-7, and a tension spring is sleeved on one side of the sliding sleeve outside the guide rod;

[0055] Specifically, the pressure block 105b-5 is an inverted triangle structure, and the opposite sides of the two racks 105c-7 are respectively attached to the inclined surfaces on both sides of the pressure block 105b-5. When the pressure block 105b-5 moves downward, as the angle of the inclined surface increases, the two racks 105c-7 are located on both sides of each other. During displacement, the rack 105c-7 slides along the guide rod and squeezes the tension spring. Since the gear 105c-5 is meshed with the rack 105c-7, the relative movement of the two gears 105c-5 drives the two clamping rods 105c-4 to rotate, so that the two clamping blocks 105c-3 are respectively attached to the two sides of the bottom of the pipe. This structure can meet the clamping restrictions of pipes of different diameters and reduce the limitations of use.

[0056] The rest of the structure is the same as that of Example 1.

[0057] Operation process: when the housing 101 is lifted upward, the pipe will press against the touch plate 105b-3. During the continuous lifting process, the touch plate 105b-3 pushes down the touch rod 105b-4. The outside of the touch rod 105b-4 is located above the reset spring 105b-6 and is sleeved and fixed with a pressing piece. When the touch rod 105b-4 is pressed downward, the pressing piece will be driven to press the reset spring 105b-6. At the same time, the pressure block 105b-5 at the bottom of the touch rod 105b-4 moves downward synchronously.

[0058] The pressure block 105b-5 is an inverted triangle structure, and the opposite sides of the two racks 105c-7 are respectively attached to the inclined surfaces on both sides of the pressure block 105b-5. When the pressure block 105b-5 moves downward, as the angle of the inclined surface increases, the two racks 105c-7 are located on both sides of each other. During displacement, the rack 105c-7 slides along the guide rod and squeezes the tension spring. Since the gear 105c-5 is meshed with the rack 105c-7, the relative movement of the two gears 105c-5 drives the two clamping rods 105c-4 to rotate, so that the two clamping blocks 105c-3 are respectively attached to the two sides of the bottom of the pipe. This structure can meet the clamping restrictions of pipes of different diameters and reduce the limitations of use.

[0059] Example 3

[0060] Reference Figure 6, this embodiment is different from the above embodiments in that: the rotary lock assembly 302 includes a fixed base 302a, the fixed base 302a is fixed to the inner side of the open cavity 102, and a sleeve 1 302b is fixed to one side of the fixed base 302a, the outer side of the sleeve 1 302b is rotatably sleeved with a lock disk 1 302c, one side of the lock disk 1 302c is provided with a lock disk 2 302d, the axis of the lock disk 2 302d is penetrated and fixed with a sleeve 2 302e, one side of the sleeve 2 302e is inserted into the sleeve 1 302b and is rotatably connected thereto, a lock disk 3 302f is provided on one side of the lock disk 2 302d, a rotating rod 302g is penetrated and fixed in the lock disk 3 302f, one end of the rotating rod 302g passes through the sleeve 2 302e and the sleeve 1 302b and is rotatably connected to the fixed base 302a, and the other end of the rotating rod 302g passes through the open cavity 102, extends to the outside of the shell 101 and is fixed with a digital disk 302h.

[0061] Furthermore, a toggle rod 1 302i is fixed to one side of the lock disk 1 302c near the edge, a toggle rod 2 302j is fixed to both sides of the lock disk 2 302d, and a toggle rod 3 302k is fixed to one side of the lock disk 3 302f.

[0062] Specifically, the outer sides of lock disk 1 302c, lock disk 2 302d and lock disk 3 302f are all provided with notches 302l, and the outer side of the locking rod 301 is provided with locking grooves 302m at equal intervals at the middle position. After the locking rod 301 is fully screwed into the internal thread of one of the locking holes, the three locking grooves 302m at the middle position are completely facing one side of the fixing seat 302a, and correspond one to one with lock disk 1 302c, lock disk 2 302d and lock disk 3 302f.

[0063] The rest of the structure is the same as that of Example 2.

[0064] Operation process: when locking, rotate the number disk 302h, which has numbers 0-9, and three of them correspond to the notches 302l on the lock disk 1 302c, the lock disk 2 302d and the lock disk 3 302f, so that the notches 302l are completely facing downward to lock the rod 301. When locking the lock rod 301, it is necessary to first rotate the number disk 302h forward. When rotating, the lock disk 302f rotates the toggle rod 3 302k on one side to drive the lock disk 2 302d to rotate, and the toggle rod 3 302k on the side of the lock disk 2 302d drives the lock disk 1 302c to rotate by toggling the toggle rod 1 302i, until the notches 302l of the lock disk 1 302c face the lock rod 301 downward, and the number indicated by the number disk 302h is the unlocking number of the lock disk 1 302c.

[0065] Secondly, the number plate 302h is reversed, and the lock plate 302f rotates to drive the notch 302l of the lock plate 2 302d toward the locking rod 301. At this time, the number indicated on the number plate 302h is the unlocking number of the lock plate 2 302d;

[0066] Then, the number plate 302h is rotated forward so that the notch 302l of the lock plate 302f faces downward to lock the rod 301. At this time, the number indicated on the number plate 302h is the unlocking number of the lock plate 302f.

[0067] At this time, the notched groove 302l on the lock disk 1 302c, the lock disk 2 302d and the lock disk 302f are completely facing the locking rod 301 downwards, and will not block the rotation of the locking rod 301. Therefore, the locking rod 301 can be rotated and locked at this time. After tightening, the lock groove 302m on the locking rod 301 is completely facing the notched groove 302l downwards, completing the locking of the locking rod 301. At this time, by randomly rotating the number disk 302h forwards and backwards, the three unlocking numbers are disrupted, so that the parts of the lock disk 1 302c, the lock disk 2 302d and the lock disk 3 302f that are not the notched groove 302l are stuck in the lock groove 302m, completing the final locking. This structure can have an effective anti-theft effect.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. 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, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary 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.

[0070] It will be appreciated that in the development of any actual implementation, 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 be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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, which should all be included in the scope of the claims of the present invention.

Claims

1. A valve handwheel lock with anti-theft function, characterized in that: include: The pipe hanging limiting part (100) comprises a shell (101) and an opening (102) opened on the top surface of the shell (101); a side opening (103) is provided at a bottom position of one side of the shell (101); and a hanging groove (104) is provided at the bottom of the side opening (103); The valve hand wheel outer cover part (200) comprises a main rod (201) and an insert block (202) fixed to one end of the main rod (201), a hand wheel limiting assembly (203) is fixed to the other end of the main rod (201), and the insert block (202) is inserted into the opening cavity (102); The locking connection part (300) is used to fix the pipe hanging restriction part (100) and the valve hand wheel outer cover part (200) together, and comprises a locking rod (301) and a rotating lock assembly (302) located on one side of the locking rod (301).

2. The valve handwheel lock with anti-theft function as claimed in claim 1, characterized in that: The pipe hanging limiting part (100) further comprises a pipe fitting component (105), wherein the pipe fitting component (105) comprises a cavity (105a) opened inside the housing (101) and located below the hanging groove (104), wherein a triggering piece (105b) vertically moves inside the cavity (105a) and penetrates the hanging groove (104), and clamping fitting pieces (105c) are arranged on both sides of the triggering piece (105b) inside the cavity (105a).

3. The valve handwheel lock with anti-theft function as claimed in claim 2, characterized in that: The touch member (105b) comprises a touch plate groove (105b-1) opened at the bottom of the hanging groove (104) and a rectangular frame (105b-2) fixed at the top of the cavity (105a); a touch plate (105b-3) is arranged inside the touch plate groove (105b-1); a touch rod (105b-4) is fixed at the bottom of the touch plate (105b-3); the bottom of the touch rod (105b-4) vertically downwardly penetrates the touch plate groove (105b-1) and the rectangular frame (105b-2) in sequence and is fixed with a pressure block (105b-5); and a reset spring (105b-6) is sleeved on the outside of the touch rod (105b-4) located in the rectangular frame (105b-2).

4. The valve handwheel lock with anti-theft function as claimed in claim 3, characterized in that: The clamping fitting (105c) comprises an arc-shaped through groove (105c-1) symmetrically opened at the bottom of the hanging groove (104), a slide (105c-2) symmetrically fixed in the cavity (105a), and a clamping block (105c-3) embedded in the inner side of the hanging groove (104) and located at the upper ends of the two arc-shaped through grooves (105c-1), and the bottoms of the two clamping blocks (105c-3) are fixed with clamping rods (105c-4), and the two clamping rods (105c-4) are The bottom ends respectively pass through two arc-shaped through grooves (105c-1) and extend into the cavity (105a), and gears (105c-5) are fixed to the bottom ends of the two clamping rods (105c-4), and the gears (105c-5) are rotatably arranged inside the cavity (105a) through a rotating shaft (105c-6), and the upper surfaces of the two slides (105c-2) are slidably connected with racks (105c-7), and the racks (105c-7) are meshed with the gears (105c-5).

5. The valve handwheel lock with anti-theft function as claimed in claim 4, characterized in that: The handwheel limiting assembly (203) comprises a semicircular disc (203a) fixed to the end of the main rod (201), an arc block (203b) is fixed at the bottom edge of the semicircular disc (203a), and a sliding groove (203c) is provided at the bottom of the semicircular disc (203a), and a handwheel limiter (203d) is slidably connected in the sliding groove (203c).

6. The valve handwheel lock with anti-theft function as claimed in claim 5, characterized in that: The hand wheel limiter (203d) comprises a slider (203d-1) and a disc (203d-2) arranged below the slider (203d-1), the slider (203d-1) slides in a slide groove (203c), a column (203d-3) is fixed at the bottom of the slider (203d-1), a limiting cavity (203d-4) is provided inside the column (203d-3), a gear ring (203d-5) is fixed on the inner side of the limiting cavity (203d-4) near the upper end, and A limiting toothed disc (203d-6) is arranged at the inner bottom of the limiting cavity (203d-4), a spring (203d-7) is arranged inside the limiting cavity (203d-4), a connecting rod (203d-8) is fixed at the bottom axis of the limiting toothed disc (203d-6), the bottom of the connecting rod (203d-8) passes through the column (203d-3) and is fixed to the upper axis of the disc (203d-2), and the bottom of the disc (203d-2) is slidably connected to three limiting rods (203d-9) distributed in a triangle.

7. The valve handwheel lock with anti-theft function as claimed in claim 6, characterized in that: The rotary lock assembly (302) comprises a fixed seat (302a), the fixed seat (302a) is fixed to the inner side of the opening cavity (102), and a sleeve (302b) is fixed to one side of the fixed seat (302a), a lock disk (302c) is rotatably sleeved on the outside of the sleeve (302b), a lock disk (302d) is arranged on one side of the lock disk (302c), a sleeve (302e) is fixed through the axis of the lock disk (302d), and one side of the sleeve (302e) is fixed to the other side of the lock disk (302d). The first sleeve (302b) is inserted into the side of the locking plate (302d) and is rotatably connected thereto; a locking plate (302f) is arranged on one side of the locking plate (302d); a rotating rod (302g) is passed through and fixed in the locking plate (302f); one end of the rotating rod (302g) passes through the second sleeve (302e) and the first sleeve (302b) and is rotatably connected to the fixing seat (302a); and the other end of the rotating rod (302g) passes through the opening (102) and extends to the outside of the housing (101) and is fixed with a digital disk (302h).

8. The valve handwheel lock with anti-theft function as claimed in claim 7, characterized in that: A toggle rod 1 (302i) is fixed on one side of the lock disk 1 (302c) near the edge, toggle rods 2 (302j) are fixed on both sides of the lock disk 2 (302d), and a toggle rod 3 (302k) is fixed on one side of the lock disk 3 (302f).

9. The valve handwheel lock with anti-theft function as claimed in claim 8, characterized in that: The outer sides of the lock disk 1 (302c), the lock disk 2 (302d) and the lock disk 3 (302f) are all provided with notches (3021).

10. The valve handwheel lock with anti-theft function as claimed in claim 8 or 9, characterized in that: The outer side of the locking rod (301) is provided with locking grooves (302m) at equal intervals at the middle position, and one end of the locking rod (301) is provided with a thread, and the other end of the locking rod (301) is fixed with a knob.

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