Sliding sleeve screw-down mechanism

Abstract

The utility model discloses a sliding sleeve screw-down mechanism which comprises a frame body assembly, a guide sleeve, an ejector rod, a first linear driving mechanism, a second linear driving mechanism, an ejector column and a third linear driving mechanism. A guide groove is formed in the frame body assembly, and the guide sleeve is vertically connected into the guide groove in a sliding mode. According to the utility model, after the two sliding columns and the sliding sleeve are put into the pushing sleeve, the two sliding columns and the sliding sleeve can be pushed to a position right above the guide sleeve by the second linear driving mechanism; under the action of the first linear driving mechanism, the ejector rod can move upwards so as to enable the two sliding columns to move upwards, and meanwhile, the ejector rod can drive the guide sleeve to move upwards through the first spring so as to enable the sliding sleeve and the two sliding columns to move upwards together; and under the action of the third linear driving mechanism, the pressing plate can press the sliding sleeve downwards, so that the sliding column at the upper part is exposed out of the sliding sleeve, the sliding sleeve can be pressed downwards automatically, and the friction sensitivity can be measured automatically.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of friction sensitivity determination, especially relates to a sliding sleeve pressing mechanism. BACKGROUND

[0002] Before the friction sensitivity determination of the powder, a slide column, powder and another slide column are put into the sliding sleeve in sequence, so that the powder is located between the two slide columns. When the friction sensitivity determination of the powder is carried out, the sliding sleeve is often pressed down, so that one slide column is exposed from the sliding sleeve, thereby facilitating the friction sensitivity determination instrument to determine the friction sensitivity. However, the sliding sleeve is often pressed down manually at present, which is not conducive to automatic determination of the friction sensitivity. UTILITY MODEL CONTENTS

[0003] The utility model discloses a sliding sleeve pressing mechanism can be favorable to automatic pressing down sliding sleeve to overcome prior art defects.

[0004] The utility model discloses a sliding sleeve pressing mechanism can be favorable to automatic pressing down sliding sleeve to overcome prior art defects.

[0005] A sliding sleeve pressing mechanism comprises:

[0006] A frame assembly is provided with a guide groove;

[0007] A guide sleeve is vertically slidably connected in the guide groove;

[0008] A top rod is coaxially vertically penetrated out of the upper part of the guide sleeve and slidably connected in the upper part of the guide sleeve, the lower part of the top rod is vertically penetrated out of the frame assembly and slidably connected in the frame assembly, the upper part of the top rod is matched with the inner diameter of the sliding sleeve, the middle part of the top rod is provided with a blocking ring part, the first spring is arranged between the upper end of the blocking ring part and the guide sleeve, and the second spring is arranged between the lower end of the blocking ring part and the groove bottom of the guide groove;

[0009] A first linear drive mechanism is vertically fixedly connected on the frame assembly, and the output end of the first linear drive mechanism is fixedly connected with the lower end of the top rod;

[0010] A second linear drive mechanism is transversely fixedly connected on the frame assembly, and the output end of the second linear drive mechanism is fixedly connected with a pushing sleeve for pushing the two slide columns together with the sliding sleeve to the upper part of the guide sleeve;

[0011] A top column is fixedly connected on the frame assembly, and the top column is located above the guide sleeve;

[0012] A third linear drive mechanism is vertically fixedly connected on the frame assembly, and the output end of the third linear drive mechanism is fixedly connected with a pressing plate for pressing the sliding sleeve.

[0013] The beneficial effects of the above technical scheme are that the two slide columns and the slide sleeve are pushed to the top of the guide sleeve by the second linear driving mechanism; under the action of the first linear driving mechanism, the top rod can move upward, so that the two slide columns move upward, and the guide sleeve can be driven upward by the first spring, so that the slide sleeve moves upward together with the two slide columns; under the action of the third linear driving mechanism, the pressing plate can press the slide sleeve downward, so that the slide column above the slide sleeve is exposed, thereby facilitating automatic pressing of the slide sleeve, and further facilitating automatic determination of the friction sensitivity.

[0014] In an embodiment, the frame assembly comprises a plate body, a bracket and a top column are fixedly connected to the lower end of the plate body, the second linear driving mechanism is fixedly connected to the bracket, and a guide groove is arranged on the bracket.

[0015] In an embodiment, a guide shaft is vertically slidably connected to the plate body, a lead screw nut is fixedly connected to the upper end of the guide shaft, and a pressing plate is fixedly connected to the lower end of the guide shaft.

[0016] The beneficial effects of the above technical scheme are that the driving motor drives the lead screw rod to rotate through the speed reducer, so as to drive the lead screw nut to move vertically along the guide direction of the guide shaft, and then the pressing plate moves vertically.

[0017] In an embodiment, the frame assembly comprises a plurality of support shafts fixedly connected to the upper end of the plate body, a mounting plate fixedly connected to the upper ends of the plurality of support shafts, and a support fixedly connected to the upper end of the mounting plate, the speed reducer is fixedly connected to the support, and the lead screw nut is located between the plate body and the mounting plate.

[0018] In an embodiment, the upper part of the lead screw rod is a light rod, and the upper part of the lead screw rod is rotatably connected to the mounting plate through a bearing.

[0019] The beneficial effects of the above technical scheme are that the mounting plate can provide support for the rotation of the lead screw rod, so that the lead screw rod rotates more stably.

[0020] In an embodiment, a shaft coupling is arranged between the output end of the speed reducer and the upper end of the lead screw rod.

[0021] In an embodiment, at least three support columns are arranged at the lower end of the plate body.

[0022] The beneficial effects of the above technical scheme are that the support columns can support the plate body to provide installation space for the bracket and other components at the lower end of the plate body.

[0023] In one embodiment, the lower end of the guide sleeve is provided with a cavity, and a first spring is arranged between the upper end face of the cavity and the upper end of the blocking ring part.

[0024] In one embodiment, the first spring and the second spring are sleeved on the top rod.

[0025] The beneficial effects of the above technical solutions are that the first spring and the second spring are limited by the top rod, so that the first spring and the second spring are removed.

[0026] In one embodiment, the pressing plate is provided with a through hole coaxial with the guide sleeve, the hole diameter of the through hole is greater than the diameter of the slide column, and the hole diameter of the through hole is less than the outer diameter of the slide sleeve.

[0027] The beneficial effects of the above technical solutions are that the slide sleeve is pressed down without interfering with the slide column.

[0028] The beneficial effects of the present application are that:

[0029] The two slide columns together with the slide sleeve can be pushed to the top of the guide sleeve by the second linear driving mechanism after being put into the pushing sleeve; under the action of the first linear driving mechanism, the top rod can move upward, so that the two slide columns move upward, and at the same time, the top rod can drive the guide sleeve to move upward through the first spring, so that the slide sleeve moves upward together with the two slide columns; under the action of the third linear driving mechanism, the pressing plate can press down the slide sleeve, so that the slide column above it is exposed from the slide sleeve, thereby facilitating automatic pressing down of the slide sleeve, and further facilitating automatic determination of the friction sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0030] In the following, the present application will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0031] Wherein:

[0032] Figure 1 The structural schematic diagram of the present application is shown;

[0033] Figure 2 The axonometric view of the present application is shown;

[0034] In the drawings, the same parts are designated by the same reference numerals. The drawings are not drawn according to the actual scale.

[0035] Reference numerals:

[0036] 1 - support, 2 - bracket, 3 - plate body, 4 - support shaft, 5 - mounting plate, 6 - support, 7 - drive motor, 8 - speed reducer, 9 - coupling, 10 - screw rod, 11 - screw nut, 12 - guide shaft, 13 - top column, 14 - slide column, 15 - pressing plate, 16 - push sleeve, 17 - slide sleeve, 18 - guide sleeve, 19 - first spring, 20 - second spring, 21 - top rod, 2101 - blocking ring part, 22 - second linear drive mechanism. DETAILED DESCRIPTION

[0037] The utility model will be further described below with reference to the drawings.

[0038] The utility model provides a slide sleeve press down mechanism, as shown in Figure 1 And Figure 2 It includes:

[0039] Bracket assembly is provided with guide groove on the bracket assembly;

[0040] Guide sleeve 18, guide sleeve 18 is vertically slidably connected in the guide groove;

[0041] Top rod 21, the upper portion of top rod 21 is coaxially vertically and slidably connected in the upper portion of guide sleeve 18, the lower portion of top rod 21 is vertically and slidably connected in the bracket assembly, the diameter of the upper portion of top rod 21 matches the inner diameter of slide sleeve 17, the middle portion of top rod 21 is provided with blocking ring part 2101, the upper end between guide sleeve 18 and blocking ring part 2101 is provided with first spring 19, the lower end between blocking ring part 2101 and the groove bottom of guide groove is provided with second spring 20;

[0042] First linear drive mechanism, first linear drive mechanism is vertically fixedly connected on the bracket assembly, the output end of first linear drive mechanism is fixedly connected the lower end of top rod 21, and first linear drive mechanism can be air cylinder;

[0043] Second linear drive mechanism 22, second linear drive mechanism 22 is fixedly connected on the bracket assembly, and the output end of second linear drive mechanism 22 is fixedly connected with push sleeve 16 for pushing two slide columns 14 together with slide sleeve 17 to the upper of guide sleeve 18, and second linear drive mechanism 22 can also be air cylinder, and second linear drive mechanism 22 can also push two slide columns 14 together with slide sleeve 17 out from the upper of guide sleeve 18 by using push sleeve 16;

[0044] Top column 13, top column 13 is fixedly connected on the bracket assembly, and top column 13 is located at the upper of guide sleeve 18;

[0045] Third linear drive mechanism, third linear drive mechanism is vertically fixedly connected on the bracket assembly, and the output end of third linear drive mechanism is fixedly connected with pressing plate 15 for pressing slide sleeve 17.

[0046] It can be understood that the two slide columns 14 together with the slide sleeve 17 can be pushed to the top of the guide sleeve 18 after being pushed into the pushing sleeve 16 by the second linear driving mechanism 22; under the action of the first linear driving mechanism, the top rod 21 can be moved upward to move the two slide columns 14 upward, and the top rod 21 can drive the guide sleeve 18 to move upward through the first spring 19 to move the slide sleeve 17 and the two slide columns 14 upward; under the action of the third linear driving mechanism, the pressing plate 15 can press the slide sleeve 17 downward to expose the slide column 14 above the slide sleeve 17, thereby facilitating automatic pressing of the slide sleeve 17 and facilitating automatic determination of the friction sensitivity.

[0047] It should be noted that the axes of the guide sleeve 18, the top rod 21, the slide sleeve 17, the slide column 14, the top column 13 and the pressing plate 15 coincide after the two slide columns 14 together with the slide sleeve 17 are pushed to the top of the guide sleeve 18.

[0048] It should be further noted that the length of the upper part of the top rod 21 needs to meet the requirement that it can push one slide column 14 out of the slide sleeve 17.

[0049] In one embodiment, the frame assembly includes a plate body 3, the lower end of the plate body 3 is fixedly connected with a bracket 2 and a top column 13, the bracket 2 is fixedly connected with a second linear driving mechanism 22, and the bracket 2 is provided with a guide groove; the upper end of the plate body 3 is fixedly connected with a third linear driving mechanism.

[0050] In one embodiment, the plate body 3 is vertically slidably connected with a guide shaft 12, the upper end of the guide shaft 12 is fixedly connected with a lead screw nut 11, and the lower end of the guide shaft 12 is fixedly connected with a pressing plate 15; the third linear driving mechanism includes a driving motor 7 arranged vertically, the output end of the driving motor 7 is drivingly connected with a speed reducer 8, the output end of the speed reducer 8 is fixedly connected with a lead screw rod 10 which is threadedly connected with the lead screw nut 11.

[0051] It can be understood that the driving motor 7 drives the lead screw rod 10 to rotate through the speed reducer 8, thereby driving the lead screw nut 11 to move vertically along the guide direction of the guide shaft 12, and further driving the pressing plate 15 to move vertically.

[0052] In one embodiment, the frame assembly includes a plurality of support shafts 4 fixedly connected to the upper end of the plate body 3, a mounting plate 5 fixedly connected to the upper end of the plurality of support shafts 4, and a support base 6 fixedly connected to the upper end of the mounting plate 5, the support base 6 is fixedly connected with the speed reducer 8, and the lead screw nut 11 is located between the plate body 3 and the mounting plate 5.

[0053] In one embodiment, the upper part of the lead screw rod 10 is a light rod, and the upper part of the lead screw rod 10 is rotatably connected to the mounting plate 5 through a bearing.

[0054] It can be understood that the mounting plate 5 can provide support for the rotation of the lead screw 10, so that the lead screw 10 can rotate more stably.

[0055] In one embodiment, a coupling 9 is arranged between the output end of the speed reducer 8 and the upper end of the lead screw 10.

[0056] In one embodiment, the lower end of the plate body 3 is provided with at least three supports 1.

[0057] It can be understood that the supports 1 can support the plate body 3, so as to provide installation space for the bracket 2 and other components at the lower end of the plate body 3.

[0058] In one embodiment, the lower end of the guide sleeve 18 is provided with a cavity, and a first spring 19 is arranged between the upper end of the cavity and the upper end of the blocking ring part 2101.

[0059] In one embodiment, the first spring 19 and the second spring 20 are sleeved on the jacking rod 21, so as to limit the first spring 19 and the second spring 20 through the jacking rod 21, so that the first spring 19 and the second spring 20 are removed.

[0060] In one embodiment, the pressing plate 15 is provided with a through hole coaxial with the guide sleeve 18, the diameter of the through hole is greater than the diameter of the sliding column 14, and the diameter of the through hole is smaller than the outer diameter of the sliding sleeve 17, so that the pressing plate 15 does not interfere with the sliding column 14 when the sliding sleeve 17 is pressed down.

[0061] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] Although the present application is described herein with reference to particular embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present application. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the present application defined in the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from the original claims. It should also be understood that the features described in conjunction with a single embodiment can be used in other described embodiments.

Claims

1. A sliding sleeve depressing mechanism for depressing a sliding sleeve (17), characterized in that, The utility model provides a kind of vertical lifting device, including: Frame assembly, guide groove is arranged on the frame assembly; Guide sleeve (18), the guide sleeve (18) is vertically slidingly connected in the guide groove; Top rod (21), the upper part of the top rod (21) is coaxially vertically penetrated and slidingly connected in the upper part of the guide sleeve (18), the lower part of the top rod (21) is vertically penetrated and slidingly connected in the frame assembly, the upper part of the top rod (21) diameter is matched with the inner diameter of the sliding sleeve (17), the middle part of the top rod (21) is provided with stop ring part (2101), the first spring (19) is arranged between the upper end of the stop ring part (2101) and the guide sleeve (18), the second spring (20) is arranged between the lower end of the stop ring part (2101) and the groove bottom of the guide groove; First linear drive mechanism, the first linear drive mechanism is vertically fixedly connected on the frame assembly, and the output end of the first linear drive mechanism is fixedly connected with the lower end of the top rod (21); Second linear drive mechanism (22), the second linear drive mechanism (22) is fixedly connected laterally on the frame assembly, and the output end of the second linear drive mechanism (22) is fixedly connected with the push sleeve (16) for pushing two sliding columns (14) together with sliding sleeve (17) to the guide sleeve (18) directly above; Top column (13), the top column (13) is fixedly connected on the frame assembly, and the top column (13) is located directly above the guide sleeve (18); Third linear drive mechanism, the third linear drive mechanism is vertically fixedly connected on the frame assembly, and the output end of the third linear drive mechanism is fixedly connected with the pressing plate (15) for pressing the sliding sleeve (17).

2. A slide down mechanism according to claim 1, wherein The frame assembly includes plate body (3), the lower end of the plate body (3) is fixedly connected with bracket (2) and the top column (13), the bracket (2) is fixedly connected with the second linear drive mechanism (22), and the bracket (2) is provided with the guide groove;The upper end of the plate body (3) is fixedly connected with the third linear drive mechanism.

3. A slide down mechanism according to claim 2, wherein, The guide shaft (12) is vertically slidingly connected on the plate body (3), the upper end of the guide shaft (12) is fixedly connected with the screw nut (11), and the lower end of the guide shaft (12) is fixedly connected with the pressing plate (15);The third linear drive mechanism includes the drive motor (7) vertically arranged, the output end of the drive motor (7) is drivingly connected with the speed reducer (8), and the output end of the speed reducer (8) is fixedly connected with the screw rod (10) that is threadedly connected with the screw nut (11).

4. A slide down mechanism according to claim 3, wherein The frame assembly includes a plurality of support shafts (4) fixedly connected on the upper end of the plate body (3), a mounting plate (5) fixedly connected on the upper end of a plurality of the support shafts (4) and a support (6) fixedly connected on the upper end of the mounting plate (5), the support (6) is fixedly connected with the speed reducer (8), and the screw nut (11) is located between the plate body (3) and the mounting plate (5).

5. A slide down mechanism according to claim 4, wherein The upper part of the lead screw (10) is a light pole, and the upper part of the lead screw (10) is rotatably connected to the mounting plate (5) through a bearing.

6. A slide down mechanism according to claim 3, wherein A shaft coupling (9) is arranged between the output end of the speed reducer (8) and the upper end of the lead screw (10).

7. A slide down mechanism according to claim 2, wherein The lower end of the plate body (3) is provided with at least three support columns (1).

8. A slide down mechanism according to claim 1 wherein, The lower end of the guide sleeve (18) is provided with a cavity, and the upper end face of the cavity is provided between the upper end of the blocking ring part (2101) and the first spring (19).

9. A slide-on press-down mechanism according to claim 1, wherein The first spring (19) and the second spring (20) are both sleeved on the top rod (21).

10. The slide-on press-down mechanism of claim 1, wherein, The pressing plate (15) is provided with a through hole coaxial with the guide sleeve (18), the hole diameter of the through hole is greater than the diameter of the sliding column (14), and the hole diameter of the through hole is less than the outer diameter of the sliding sleeve (17).

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