A vibratory tamper for excavators

Abstract

The utility model relates to the technical field of engineering tools, disclose a kind of excavator vibrating rammer, including tool connecting frame, rammer plate and fixed on the vibrator of rammer plate, the tool connecting frame has upper connecting piece, the rammer plate has lower connecting piece, the upper connecting piece and the lower connecting piece have oppositely arranged connecting surface, and oppositely arranged connecting surface is connected between shock absorber, the upper connecting piece both ends have outer limiting portion, the lower connecting piece has the inner limiting portion in the outer limiting portion inside, a limiting hole is formed in the inner limiting portion, the outer limiting portion is fixed with the limiting member inserted into the limiting hole, and the limiting hole has the limiting area for the activity of the limiting member in it. The utility model provides limiting protection to rammer plate by the cooperation of limiting member and limiting hole, prevent shock absorber from being damaged due to misplacement pulling.

Description

Technical Field

[0001] This utility model relates to the field of engineering operation tools, and in particular to a vibratory rammer for excavators. Background Technology

[0002] A vibratory rammer is a device used to compact and level land. It is usually installed at the front end of an excavator as an attachment and is driven by the excavator's hydraulic system. It is widely used for compaction operations on flat or sloping surfaces of the ground or trenches.

[0003] Existing vibratory rammers typically include an attachment frame for connecting the excavator's front drive arm, a tamping plate for compacting the ground, and a vibrator fixed to the tamping plate to provide the vibration source. The tamping plate and the attachment frame are connected by multiple damping blocks to form a flexible connection structure, ensuring that the tamping plate reciprocates under the drive of the vibrator. However, the working conditions at the site are complex, and there are obstacles along the movement path of the tamping plate. If the excavator is not operated properly, the attachment frame and the tamping plate may become misaligned and pulled, causing damage to the damping blocks. Under prolonged fatigue operation of the vibratory rammer, the damaged damping blocks are more likely to burst, leading to the accidental separation of the tamping plate from the attachment frame. In severe cases, this can also result in the exciter falling off and damage to the hydraulic lines. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a vibratory rammer for excavators, which provides limiting protection for the rammer plate and prevents the shock absorber block from being damaged due to misalignment.

[0005] The technical solution of this utility model is as follows: a vibratory rammer for excavators, including an attachment connecting frame, a tamping plate, and a vibrator fixed on the tamping plate. The attachment connecting frame has an upper connecting member, and the tamping plate has a lower connecting member. The upper connecting member and the lower connecting member have oppositely arranged connecting surfaces, and the oppositely arranged connecting surfaces are connected by a damping block. The upper connecting member has outer limiting portions at both ends, and the lower connecting member has an inner limiting portion located inside the outer limiting portion. The inner limiting portion has a limiting hole, and a limiting member inserted into the limiting hole is fixed on the outer limiting portion. The limiting hole has a limiting area for the limiting member to move. The outer and inner limiting parts cooperate to restrict the displacement of the tamping plate in the left and right directions. The limiting hole cooperates with the limiting component to restrict the displacement of the tamping plate in the front and back directions and the amount of displacement in the vertical direction. When the vibrator is obstructed from lifting or moving laterally due to an obstacle, the attachment connecting frame and the tamping plate will move out of place. The above-mentioned limiting cooperation will limit the amount of displacement within the deformation range of the damping block, thereby preventing damage to the damping block. Furthermore, when the damping block breaks due to long-term fatigue use, the limiting hole and the limiting component can prevent the vibrator from falling off, thereby protecting the hydraulic mechanism of the vibratory tamper.

[0006] There is an active gap between the outer limiting part and the inner limiting part, which allows relative movement between the upper connecting member and the lower connecting member, and a shock-absorbing pad is fixed on the inner side of the outer limiting part.

[0007] The limiting hole is a straight slot set in the vertical direction. The outer limiting part has a through hole corresponding to the straight slot. The limiting member is an internal hex bolt. The internal hex bolt passes through the straight slot and the through hole in sequence and is connected to the nut. The head of the internal hex bolt is located in the straight slot.

[0008] The center distance of the straight groove is greater than the maximum vertical distance of the tamping plate reciprocating under the drive of the vibrator, and the diameter of the straight groove is greater than the head diameter of the internal hex bolt.

[0009] Each inner limiting part has two straight slots arranged side by side in the transverse direction on the inner limiting part, and each outer limiting part has two hexagon socket bolts, with each hexagon socket bolt corresponding to one of the straight slots.

[0010] The upper connecting member includes two side-by-side upper connecting plates, each with wing plates extending from both ends toward the compaction plate. Adjacent wing plates are connected by a first fixing plate. The lower connecting member includes two pairs of lower connecting plates located between adjacent wing plates, each pair connected by a second fixing plate. The inner surface of each wing plate and the outer surface of each lower connecting plate form the connecting surface. The first fixing plate is the outer limiting part, and the second fixing plate is the inner limiting part. The lower connecting plates and wing plates are connected by damping blocks. The central axis of the damping blocks is parallel to the compaction plate. When the vibrator vibrates, the state of the damping blocks only switches between tension and reset. Compared with traditional inclined damping blocks, there is no compressive deformation, so the impact force on the attachment connecting frame is smaller. Correspondingly, the internal force of the damping block is unidirectional, resulting in less material fatigue loss and a longer service life.

[0011] The upper end of the first fixing plate has a bent portion that bends toward the vibrator, and both ends of the bent portion are fixedly connected to the upper connecting plate.

[0012] The outer side of the bent portion is provided with reinforcing ribs, which are connected to the bent plate and the upper connecting plate respectively.

[0013] In summary, the present invention has the following main advantages:

[0014] This invention features an outer limiting part on the upper connecting member and an inner limiting part on the lower connecting member. The outer and inner limiting parts work together to restrict the displacement of the compaction plate in the left-right direction. Furthermore, the outer and inner connecting members are equipped with limiting elements and limiting holes. The limiting holes cooperate with the limiting elements to restrict the displacement of the compaction plate in the front-back direction. While ensuring the compaction plate has sufficient vertical movement space, the vertical displacement is also limited. When an obstacle hinders the lifting or lateral movement of the vibrator, the attachment connecting frame and the compaction plate will misalign. The aforementioned limiting mechanism restricts the misaligned displacement within the deformation range of the damping block, thus preventing damage to the damping block. Moreover, if the damping block breaks due to prolonged fatigue, the limiting holes and limiting elements prevent the vibrator from falling off, thereby protecting the hydraulic mechanism of the vibratory tamper. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the attachment connecting frame in this utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the tamping plate and the vibrator in this utility model;

[0018] Figure 4 This is the front view of this utility model;

[0019] Figure 5 This is a side view of the present invention;

[0020] Figure 6 It is along Figure 4 A cross-sectional view along the AA direction;

[0021] Figure 7 It is along Figure 5 A cross-sectional view along the BB direction.

[0022] Reference numerals: 1. Attachment connecting frame; 101. Connecting ear plate; 102. Connecting hinge shaft; 103. Connecting seat; 2. Vibrator; 201. Fixing platform; 3. Compactor plate; 4. Upper connecting plate; 401. Wing plate; 5. Lower connecting plate; 6. Shock-absorbing block; 7. First fixing plate; 701. Bending part; 702. Reinforcing rib; 8. Second fixing plate; 801. Limiting hole; 9. Limiting component; 901. Hex socket head cap screw; 902. Nut; 10. Shock-absorbing pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Furthermore, in this utility model, directional terms such as "upper," "lower," "left," and "right" may be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly based on the orientation of the components in the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, this utility model provides a vibratory rammer for excavators, including an attachment connecting frame 1, a tamping plate 3, and a vibrator 2 fixed on the tamping plate 3. Similar to the prior art, the attachment connecting frame 1 includes a connecting seat 103, two connecting ear plates 101 welded and fixed to the upper surface of the connecting seat 103 and arranged side by side, and two connecting hinge shafts 102 installed side by side through the two connecting ear plates 101. The front end of the excavator's drive arm is rotatably connected to the connecting hinge shafts 102 to drive the vibratory rammer to move through the attachment connecting frame 1. The vibrator 2 in this solution is driven by a hydraulic motor. The vibrator 2 is installed on the upper surface of the tamping plate 3 via a fixed platform 201. The tamping plate 3 vibrates up and down as the vibrator 2 operates to tampe the ground.

[0027] Further preferred, such as Figure 2 and Figure 3As shown, the lower surface of the connecting seat 103 of the attachment connecting frame 1 has an upper connecting member, and the upper surface of the tamping plate 3 has a lower connecting member. The lower connecting members are located on both sides of the vibrator 2. The upper connecting member and the lower connecting member have oppositely arranged connecting surfaces, and the oppositely arranged connecting surfaces are connected by a damping block 6. The upper connecting member has outer limiting parts at both ends, and the lower connecting member has an inner limiting part located inside the outer limiting parts. The outer limiting parts and the inner limiting parts cooperate to limit the displacement of the tamping plate 3 relative to the attachment connecting frame 1 in the left and right directions. A limiting hole 801 is opened on the inner limiting part, and a limiting member 9 inserted into the limiting hole 801 is fixed on the outer limiting part. The limiting hole 801 has a limiting hole 801. There is a limiting area for the movement of the limiting member 9. The limiting hole 801 cooperates with the limiting member 9 to limit the displacement of the tamping plate 3 relative to the attachment connecting frame in the front-to-back direction. Under the premise of ensuring that the tamping plate 3 has a certain vertical movement space, it limits the amount of displacement in the vertical direction. When the vibrator is obstructed from lifting or lateral movement due to obstacles, the attachment connecting frame 1 and the tamping plate 3 will move out of alignment. The above-mentioned limiting cooperation limits the amount of displacement within the deformation range of the damping block 6, thereby preventing damage to the damping block 6. Furthermore, when the damping block 6 breaks due to long-term fatigue use, the limiting hole 801 and the limiting member 9 can prevent the vibrator 2 from falling off, thereby protecting the hydraulic mechanism of the vibratory tamper.

[0028] Specifically, such as Figure 2 As shown, the upper connector includes two upper connecting plates 4 welded side-by-side to the lower surface of the connecting seat 103, as shown in the figure. Figure 4 As shown, each of the upper connecting plates 4 has wing plates 401 extending from both ends toward the tamping plate 3, as... Figure 5 As shown, adjacent wing plates 401 are connected by a first fixing plate 7. Preferably, the first fixing plate 7 is fixed to the inner side of the wing plate 401 by welding. The first fixing plate 7 is vertically arranged and serves as the outer limiting part. Figure 3As shown, the lower connecting member includes two pairs of lower connecting plates 5 located between adjacent wing plates 401. Each lower connecting plate 5 is vertically welded and fixed to the upper surface of the ramming plate 3. The two lower connecting plates 5 in each pair are connected by a second fixing plate 8. Preferably, the second fixing plate 8 is welded and fixed to the outside of the lower connecting plate 5. The second fixing plate 8 is also vertically arranged, which is the inner limiting part. The inner surface of each wing plate 401 and the outer surface of each lower connecting plate 5 are the connecting surfaces. In this solution, there are at least four shock absorbers 6, which are respectively fixed between the oppositely arranged wing plates 401 and lower connecting plates 5 by bolts. After being fixed, the shock absorber 6 has its axis parallel to the tamping plate 3 in the initial state. When the vibrator 2 is activated, the state of the shock absorber 6 only switches between tension and reset. In contrast, the traditionally inclined shock absorber 6 switches between compression, reset, tension, and reset when the vibrator 2 is activated. Therefore, the shock absorber 6 in this solution does not have a compression deformation state. As a result, the impact force of the tamping plate 3 acting in the opposite direction on the attachment connecting frame 1 will be smaller. Furthermore, the shock absorber 6 is subjected to unidirectional force (only tension and no compression) inside, resulting in less material fatigue and a longer service life.

[0029] like Figure 7 As shown, there is an active gap between the first fixed plate 7 and the second fixed plate 8 that allows relative movement between the lower connecting plate 5 and the lower connecting member. In order to avoid collision and friction between the second fixed plate 8 and the first fixed plate 7 due to the vibration displacement of the vibrator 2, a shock-absorbing pad 10 is fixed on the inner side of the first fixed plate 7. The second fixed plate 8 makes soft contact with the first fixed plate 7 through the shock-absorbing pad 10. Both the shock-absorbing pad 10 and the shock-absorbing block 6 are made of rubber.

[0030] like Figure 6 and Figure 7 As shown, the limiting hole 801 is a straight slot arranged in the vertical direction. The outer limiting part has a through hole corresponding to the straight slot. The limiting member 9 is an internal hex bolt 901. The internal hex bolt 901 passes through the straight slot and the through hole in sequence and is connected to the nut 902. The inner side of the nut 902 and the inner side of the head of the internal hex bolt 901 are respectively pressed tightly against the inner and outer sides of the first fixing plate 7 to complete the fixing of the internal hex bolt 901. After fixing, the head of the internal hex bolt 901 is located in the straight slot and cooperates with the straight slot for limiting. Specifically, the center distance of the straight slot is greater than the maximum vertical distance of the reciprocating motion of the compaction plate 3 under the drive of the vibrator 2. The diameter of the straight slot is greater than the head diameter of the internal hex bolt 901 to ensure the normal use of the compaction plate 3.

[0031] like Figure 6 As shown, each of the first fixing plates 7 has two straight slots arranged side by side in the horizontal direction on the first fixing plate 7, and each of the second fixing plates 8 has two hexagon socket bolts 901, and the hexagon socket bolts 901 correspond one-to-one with the straight slots.

[0032] like Figure 2 As shown, in order to improve the connection strength of the first fixing plate 7, the upper end of the first fixing plate 7 has a bent portion 701 that bends toward the vibrator 2. The two ends of the bent portion 701 are welded and fixed to the upper connecting plate 4. More preferably, the outer side of the bent portion 701 is also provided with a reinforcing rib 702, which is welded and fixed to the bent plate and the upper connecting plate 4 respectively.

[0033] When implementing the above technical solutions, such as Figure 2 As shown, the attachment connecting frame 1, the upper connecting plate 4, and the first fixing plate 7 are assembled into the upper component, as follows: Figure 3 As shown, the tamping plate 3, lower connecting plate 5, shock absorber 6, and second fixed plate 8 are assembled into a lower frame. The upper and lower components are aligned and inserted into the mounting holes of the wing plate 401 of the upper connecting plate 4, which are aligned with the mounting holes of the shock absorber 6. The two are connected by bolts. The hexagonal socket bolts 901 pass through the corresponding straight slots and through holes and are connected to the nuts 902 to complete the assembly of the limiting component 9. Finally, the vibrator 2 is fixed on the fixing platform 201 of the tamping plate 3. In use, the excavator's drive arm is connected to the attachment connecting frame 1, and the hydraulic lines of the hydraulic motor on the vibrator 2 are connected to the excavator's hydraulic system. When the vibrator 2 is activated, the tamping plate 3 reciprocates. During this process, the hexagonal socket bolts 901 cooperate with the straight slots to limit and protect the tamping plate 3, so as to prevent the shock absorber 6 from being damaged due to the misalignment and pulling of the tamping plate 3.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An excavator vibratory rammer, comprising an attachment connecting frame, a rammer plate, and a vibrator fixed to the rammer plate, wherein the attachment connecting frame has an upper connecting member, the rammer plate has a lower connecting member, the upper connecting member and the lower connecting member have opposing connecting surfaces, and the opposing connecting surfaces are connected by a damping block, characterized in that, The upper connector has outer limiting portions at both ends, and the lower connector has an inner limiting portion located inside the outer limiting portion. The inner limiting portion has a limiting hole, and the outer limiting portion has a limiting member inserted into the limiting hole. The limiting hole has a limiting area for the limiting member to move.

2. The vibratory compactor of claim 1, wherein, There is an active gap between the outer limiting part and the inner limiting part, which allows relative movement between the upper connecting member and the lower connecting member, and a shock-absorbing pad is fixed on the inner side of the outer limiting part.

3. A vibratory compactor according to claim 1 or 2, wherein, The limiting hole is a straight slot set in the vertical direction. The outer limiting part has a through hole corresponding to the straight slot. The limiting member is an internal hex bolt. The internal hex bolt passes through the straight slot and the through hole in sequence and is connected to the nut. The head of the internal hex bolt is located in the straight slot.

4. The vibratory compactor of claim 3, wherein, The center distance of the straight groove is greater than the maximum vertical distance of the tamping plate reciprocating under the drive of the vibrator, and the diameter of the straight groove is greater than the head diameter of the internal hex bolt.

5. The vibratory compactor of claim 4, wherein, Each inner limiting part has two straight slots arranged side by side in the transverse direction on the inner limiting part, and each outer limiting part has two hexagon socket bolts, with each hexagon socket bolt corresponding to one of the straight slots.

6. The vibratory compactor of claim 1 or 2, wherein, The upper connector includes two upper connecting plates arranged side by side. Each upper connecting plate has wing plates extending from both ends toward the tamping plate. Adjacent wing plates are connected by a first fixing plate. The lower connector includes two pairs of lower connecting plates located between adjacent wing plates. The two lower connecting plates in each pair are connected by a second fixing plate. The inner surface of each wing plate and the outer surface of each lower connecting plate are the connecting surfaces. The first fixing plate is the outer limiting part, and the second fixing plate is the inner limiting part.

7. The vibratory compactor of claim 6, wherein, The upper end of the first fixing plate has a bent portion that bends toward the vibrator, and both ends of the bent portion are fixedly connected to the upper connecting plate.

8. The vibratory compactor of claim 7, wherein, The outer side of the bent portion is provided with reinforcing ribs, which are connected to the bent plate and the upper connecting plate respectively.

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