Telescopic mechanism, and packing removal device

Abstract

A telescopic mechanism, which belongs to the field of maintenance of fire pumps. The telescopic mechanism comprises an adjustment assembly (100), which comprises a transverse rod (101), wherein an adjustment rod (102) is provided on one side of the transverse rod, one end of a fixing rod (103) is connected to the transverse rod, the other end of the fixing rod is connected to a vertical rod (104), the vertical rod is connected to a telescopic rod (105), and a fixing member (106) is provided at the joint of the vertical rod and the telescopic rod. A packing removal device comprising a telescopic mechanism, the packing removal device further comprising a locking assembly (200), wherein the locking assembly comprises an adapter member (201) connected to the adjustment rod, and the adapter member is connected to a locking hook (202). The device can be used to remove different sizes of packing, and can also improve the reliability of inserting a locking hook into the packing.

Description

Telescopic mechanism and packing removal device Technical Field

[0001] The utility model relates to the field of fire pump maintenance, in particular to a telescopic mechanism and a device for removing packing. Background Art

[0002] Most fire water sources provide fire water that needs to be pressurized by fire pumps to meet the water pressure required for fire extinguishing. Therefore, regular maintenance of fire pumps is necessary to ensure the efficiency of fire extinguishing, thereby improving the rescue efficiency of firefighters. In the maintenance of fire pumps, replacing old packing is an indispensable step. When removing the fire pump packing, it is necessary to bend the T-hook, hook the packing with the hook, and turn the handle to rotate and pull out the old packing. However, the radius of the bent tool is fixed, and it needs to be bent again when facing packings of different sizes. Not only is the operation cumbersome, but repeated bending can easily cause the tool to break. At the same time, it is difficult to fix the packing with the hook. When the pulling force is too large, it is easy to cause decoupling, which poses a great safety hazard.

[0003] Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the present invention.

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

[0006] The utility model aims to provide a telescopic mechanism, which aims to solve the problem that packings of different sizes need to be bent again when disassembling, which is a cumbersome operation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a telescopic mechanism, including an adjustment component, including a cross bar, an adjustment rod is provided on one side of the cross bar, one end of a fixed rod is connected to the cross bar, the other end of the fixed rod is connected to a vertical rod, and the vertical rod is connected to the telescopic rod, and a fixing part is provided at the connection between the vertical rod and the telescopic rod.

[0008] As a preferred solution of the telescopic mechanism of the present invention, the side wall of the cross bar is provided with an opening, and the cross bar is provided with a transverse groove.

[0009] As a preferred solution of the telescopic mechanism of the utility model, one end of the adjusting rod is inserted into the transverse groove, and the other end of the adjusting rod extends out of the transverse rod. A straight groove is provided on the adjusting rod, and a rack is provided on the side wall of the straight groove.

[0010] As a preferred solution of the telescopic mechanism of the utility model, wherein: a through hole is provided in the middle of the fixed rod, a positioning hole is provided in the top ring of the fixed rod, a rotating rod is provided in the through hole, one end of the rotating rod is connected to the rotating ring, the rotating ring is provided with an arc groove, and the other end of the rotating rod is connected to the rotating gear.

[0011] As a preferred solution of the telescopic mechanism of the present invention, a pressing piece is provided at the bottom of the vertical rod, and the pressing piece includes a circular ring, a positioning rod arranged on the circular ring, and a pressing block arranged on the circular ring, and a vertical groove is opened in the vertical rod.

[0012] As a preferred solution of the telescopic mechanism of the utility model, wherein: the fixing part includes a fixing ring, a positioning ring fixed to the outside of the fixing ring and a rotating ring sleeved on the outside of the positioning ring, the side wall of the fixing ring is evenly provided with a pressing piece, the pressing piece is provided with an elastic block, the positioning ring is evenly provided with a square groove, and the inner wall of the rotating sleeve is evenly provided with a pressing rod.

[0013] As a preferred solution of the telescopic mechanism of the present invention, one end of the telescopic rod is inserted into the vertical slot, and the other end of the telescopic rod is provided with a handle.

[0014] The beneficial effects of the present invention are as follows: by rotating the rotating ring to drive the adjusting rod to move, the extended length of the adjusting rod can be changed, which can be suitable for the removal of packings of different sizes; on the other hand, the distance between the handle and the cross bar can be adjusted by the telescopic rod, and the telescopic rod is fixed by the fixing piece, which can be used to remove packings of different depths, thereby increasing the scope of application of the device.

[0015] Another object of the present invention is to provide a device for removing packing, which aims to solve the problem of easy unhooking when the pulling force is too large.

[0016] To solve the above technical problems, the present invention also provides the following technical solutions: a device for removing packing, comprising the telescopic mechanism, and a locking assembly, comprising a connecting rod connected to the adjusting rod, and the connecting rod is connected to the locking hook.

[0017] As a preferred solution of the packing removal device of the present invention, a receiving groove is provided inside the connecting rod.

[0018] As a preferred solution of the packing removal device of the present invention, the locking hook includes a hook body, a spring is sleeved in the middle of the hook body, a connecting seat is provided at the bottom of the hook body, and a locking rod is evenly arranged on the side wall of the connecting seat.

[0019] The beneficial effect of the utility model is that after the front end of the hook body is inserted into the packing, the handle is rotated to compress the spring at the front end of the hook body, thereby driving the locking rod to be inserted into the packing, and the hook body can be locked to prevent the hook from being unhooked due to excessive pulling force. 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] FIG1 is a schematic structural diagram of a telescopic mechanism and a device for removing packing provided by the present invention;

[0022] FIG2 is a schematic cross-sectional view of an adjustment assembly provided by the present invention;

[0023] FIG3 is a schematic structural diagram of a telescopic mechanism provided by the present invention;

[0024] FIG4 is a schematic diagram of an exploded structure of a fixing member provided by the present invention;

[0025] FIG5 is a schematic cross-sectional view of a fixing member provided by the present invention;

[0026] FIG6 is a schematic structural diagram of a locking assembly provided by the present invention;

[0027] FIG7 is a schematic cross-sectional view of a locking assembly provided by the present invention. 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] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] Example 1

[0032] 1-3 , this embodiment provides a telescopic mechanism, including an adjustment assembly 100, including a horizontal bar 101, an adjustment rod 102 is provided on one side of the horizontal bar 101, one end of a fixed rod 103 is connected to the horizontal bar 101, the other end of the fixed rod 103 is connected to a vertical rod 104, the vertical rod 104 is connected to a telescopic rod 105, and a fixing member 106 is provided at the connection between the vertical rod 104 and the telescopic rod 105; an opening 101a is provided on the side wall of the horizontal bar 101, and a horizontal groove 101b is provided on the horizontal bar 101. One end of the adjusting rod 102 is inserted into the horizontal groove 101b, and the other end of the adjusting rod 102 extends out of the horizontal rod 101. A straight groove 102a is provided on the adjusting rod 102, and a rack 102a-1 is provided on the side wall of the straight groove 102a; a through hole 103a is provided in the middle of the fixing rod 103, a positioning hole 103b is provided on the top ring of the fixing rod 103, a rotating rod 103c is provided in the through hole 103a, and one end of the rotating rod 103c is connected to the rotating ring 103d The rotating ring 103d is provided with an arc groove 103d-1, and the other end of the rotating rod 103c is connected to the rotating gear 103e; a pressing piece 104a is provided at the bottom of the vertical rod 104, and the pressing piece 104a includes a circular ring 104a-1, a positioning rod 104a-2 arranged on the circular ring 104a-1 and a pressing block 104a-3 arranged on the circular ring 104a-1, and a vertical groove 104b is opened in the vertical rod 104.

[0033] Specifically, the crossbar 101 is fixedly connected to the fixed rod 103, the opening 101a is connected to the through hole 103a, the rotating rod 103c can pass through the opening and embed the rotating gear 103e into the straight groove 102a, and the rotating gear 103e is engaged with the rack 102a-1 in the straight groove 102a.

[0034] Preferably, the rotating ring 103d and the fixed rod 103 are fixed by the cooperation of the T-shaped stage and the T-shaped slot, and the rotating ring 103d and the vertical rod 104 are also fixed by the cooperation of the T-shaped stage and the T-shaped slot. The rotation of the rotating ring 103d will drive the rotation of the rotating gear 103e.

[0035] Furthermore, the positioning rod 104 a - 2 can pass through the arc groove 103 d - 1 and the positioning hole 103 b to fix the rotating ring 103 d , thereby fixing the length of the adjustment rod 102 .

[0036] In this embodiment, when packings of different sizes need to be disassembled, the pressing block 104a-3 is first pushed upward to extend the positioning rod 104a-2 inserted into the positioning hole 103b, thereby unlocking the rotating ring 103d and allowing it to rotate again. After unlocking, the rotating ring 103d is rotated, and the rotation of the rotating ring 103d drives the rotation of the rotating gear 103e at the other end. Since the rotating gear 103e is fixed in position, the rotating gear 103e rotates and drives the rack 102 engaged with it. a-1 moves, and the rack 102a-2 moves to drive the adjusting rod 102 to extend from the cross bar 101, thereby changing the length of the adjusting rod 102; after completing the length adjustment of the adjusting rod 102, pressing the pressing block 104a-3 drives the ring 104a-1 to move downward, and the downward movement of the ring 104a-1 drives the positioning rod 104a-2 to move downward until the positioning rod 104a-2 passes through the arc groove 103d-1 and is inserted into the positioning hole 103b, thereby locking the rotating ring 103d.

[0037] Due to the meshing of the rotating gear 103e and the rack 102a-1, the length of the adjusting rod 102 can be quickly changed by simply rotating the rotating ring 103d, which can adapt to the disassembly of packings of different sizes.

[0038] Example 2

[0039] Referring to Figures 3-5, there is a second embodiment of the present invention, which is based on the previous embodiment and differs from the previous embodiment in that one end of the telescopic rod 105 is inserted into the vertical slot 104b, and the other end of the telescopic rod 105 is provided with a handle 105a; the fixing member 106 includes a fixing ring 106a, a positioning ring 106b fixed to the outside of the fixing ring 106a, and a rotating sleeve 106c sleeved on the outside of the positioning ring 106b, the side wall of the fixing ring 106a is evenly ringed with a pressing piece 106a-1, the pressing piece 106a-1 is provided with an elastic block 106a-2, the positioning ring 106b is evenly ringed with a square groove 106b-1, and the inner wall of the rotating sleeve 106c is evenly ringed with a pressing rod 106c-1.

[0040] Specifically, the vertical rod 104 is inserted into the groove at the bottom of the fixing ring 106 a to fix the two together, and the inner diameter of the fixing ring 106 a matches the diameter of the telescopic rod 105 .

[0041] Preferably, the number of the pressing pieces 106a-1 is the same as the number of the square grooves 106b-1, and their positions correspond one to one, and a pressing rod 106c-1 is inserted into each square groove 106b-1.

[0042] Furthermore, when the pressing rod 106c-1 presses the pressing piece 106a-1, the elastic block 106a-2 is pressed against the telescopic rod 105 and increases the contact area with the telescopic rod 105, thereby increasing the friction with the telescopic rod 105 and fixing it.

[0043] In this embodiment, the length of the telescopic rod 105 needs to be adjusted to adapt to the removal of packings of different depths. First, the telescopic rod 105 needs to be pulled to extend it from the vertical slot 104b. When the telescopic rod 105 is extended to a sufficient length, the rotating sleeve 106c is rotated clockwise. The rotation of the rotating sleeve 106c drives the pressing rod 106c-1 to move in the square slot 106b-1 until the pressing rod 106c-1 moves to the other end of the square slot 106b-1, and presses the pressing plate 106a-1 during the movement, so that the elastic block 106a-2 on the pressing plate 106a-1 is close to the side wall of the telescopic rod 105 and compressed to deformation, thereby increasing the contact area between the telescopic rod 105 and the elastic block 106a-2, and thereby increasing the friction between the telescopic rod and the elastic block 106a-2, thereby achieving the purpose of fixing the telescopic rod 105.

[0044] By providing the fixing member 106, the telescopic rod 105 can be fixed by simply rotating the rotating sleeve 106c, thereby freely adjusting the length of the telescopic rod 105 to adapt to the removal of packings of different depths, thereby reducing the labor intensity of the staff.

[0045] Example 3

[0046] Referring to Figures 1-7, there is a third embodiment of the present invention. This embodiment provides a device for removing packing. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: a locking assembly 200 includes a connecting rod 201 connected to the adjusting rod 102, and the connecting rod 201 is connected to the locking hook 202; a accommodating groove 201a is provided inside the connecting rod 201; the locking hook 202 includes a hook body 202a, a spring 202a-1 is sleeved in the middle of the hook body 202a, a connecting seat 202a-2 is provided at the bottom of the hook body 202a, and a locking rod 202b is evenly arranged on the side wall of the connecting seat 202a-2.

[0047] Specifically, the connecting seat 202a-2 is placed in the accommodating groove 201a, and the connecting seat 202a-2 is hinged to the locking rod 202b.

[0048] In this embodiment, after the lengths of the adjusting rod 102 and the telescopic rod 105 are adjusted, the cross bar 101 is extended into the position of the packing, and the front end of the hook body 202a is inserted into the packing. At this time, the handle 105a is gripped and rotated. After the front end of the hook body 202a is subjected to pressure, the spring 202a-1 is compressed and the connecting seat 202a-2 moves in the accommodating groove 201a. Since the locking rod 202b and the side wall of the connecting rod 201 form a fixed point, the movement of the connecting seat 202a-2 will drive the locking rod 202b to rotate inward around the fixed point, so that the locking rod 202b is inserted into the packing and clamps the front end of the hook body 202a, thereby making the connection between the hook body 202a and the packing more reliable, and the greater the force of rotating the handle 105a, the greater the force of the locking rod 202b to clamp the hook body 202a, thereby preventing the occurrence of unhooking.

[0049] By providing the locking assembly 200, the locking rod 202b locks the hook body 202a, thereby preventing the hook from being unhooked due to excessive force, thereby improving work safety.

[0050] 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, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially 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 of performing the function described herein, 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.

[0051] 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.

[0052] 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.

[0053] 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 telescopic mechanism, characterized in that: include, The adjustment assembly (100) comprises a crossbar (101), an adjustment rod (102) is provided on one side of the crossbar (101), one end of a fixing rod (103) is connected to the crossbar (101), the other end of the fixing rod (103) is connected to a vertical rod (104), the vertical rod (104) is connected to a telescopic rod (105), and a fixing piece (106) is provided at the connection between the vertical rod (104) and the telescopic rod (105).

2. The telescopic mechanism according to claim 1, characterized in that: The side wall of the cross bar (101) is provided with an opening (101a), and the cross bar (101) is provided with a transverse groove (101b).

3. The telescopic mechanism according to claim 2, characterized in that: One end of the adjusting rod (102) is inserted into the transverse groove (101b), and the other end of the adjusting rod (102) extends out of the transverse rod (101). The adjusting rod (102) is provided with a straight groove (102a), and a rack (102a-1) is provided on the side wall of the straight groove (102a).

4. The telescopic mechanism according to claim 3, characterized in that: A through hole (103a) is provided in the middle of the fixed rod (103), a positioning hole (103b) is provided at the top of the fixed rod (103), a rotating rod (103c) is provided in the through hole (103a), one end of the rotating rod (103c) is connected to a rotating ring (103d), the rotating ring (103d) is provided with an arc groove (103d-1), and the other end of the rotating rod (103c) is connected to a rotating gear (103e).

5. The telescopic mechanism according to claim 4, characterized in that: A pressing piece (104a) is provided at the bottom of the vertical rod (104), and the pressing piece (104a) comprises a circular ring (104a-1), a positioning rod (104a-2) arranged on the circular ring (104a-1), and a pressing block (104a-3) arranged on the circular ring (104a-1). A vertical groove (104b) is provided in the vertical rod (104).

6. The telescopic mechanism according to claim 4, characterized in that: One end of the telescopic rod (105) is inserted into the vertical groove (104b), and the other end of the telescopic rod (105) is provided with a handle (105a).

7. The telescopic mechanism according to claim 4, characterized in that: The fixing member (106) comprises a fixing ring (106a), a positioning ring (106b) fixed to the outside of the fixing ring (106a), and a rotating ring (106c) sleeved on the outside of the positioning ring (106b); a pressing plate (106a-1) is evenly arranged on the side wall of the fixing ring (106a); an elastic block (106a-2) is arranged on the pressing plate (106a-1); a square groove (106b-1) is evenly arranged on the positioning ring (106b); and a pressing rod (106c-1) is evenly arranged on the inner wall of the rotating sleeve (106c).

8. A device for removing packing, characterized in that: The invention comprises the telescopic mechanism according to any one of claims 1 to 7, and The locking assembly (200) comprises a connecting rod (201) connected to the adjusting rod (102), wherein the connecting rod (201) is connected to a locking hook (202).

9. The packing removal device according to claim 6, characterized in that: The connection rod (201) is provided with a receiving groove (201a) inside.

10. The packing removal device according to claim 9, characterized in that: The locking hook (202) comprises a hook body (202a), a spring (202a-1) is sleeved in the middle of the hook body (202a), a connecting seat (202a-2) is provided at the bottom of the hook body (202a), and a locking rod (202b) is evenly arranged on the side wall of the connecting seat (202a-2).

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